Biblioteca para criação simples e rápida de programas para MetaTrader (Parte XXXIV): ordens de negociação pendentes - exclusão de ordens, modificação de ordens/posições por condições

6 maio 2020, 18:00
Artyom Trishkin
0
1 674

Sumário

Ideia

Neste artigo, concluiremos a seção dedicada ao trading mediante solicitações de negociação pendentes e criaremos uma funcionalidade para excluir ordens pendentes e modificar StopLoss e TakeProfit e parâmetros de ordens pendentes.

Assim, teremos toda uma funcionalidade com a qual poderemos criar estratégias personalizadas simples, mais precisamente alguma lógica para o EA se comportar quando ocorrerem as condições especificadas pelo usuário. Se tivermos uma interface gráfica, isso pode fornecer as ferramentas, por exemplo, para criar um construtor visual que se encarregue do comportamento do EA diretamente do EA em execução (talvez faremos um pequeno exemplo no futuro, quando criada a interface gráfica da biblioteca).

No momento, já podemos criar tipos adicionais de ordens pendentes. Por exemplo, para MQL4, pode-se criar uma ordem StopLimit. Mas pretendo começar a criá-la, ou melhor, criar um objeto-ordem-StopLimit para MQL4, se houver suficiente funcionalidade de biblioteca.
Como resultado, será possível criar tipos completamente novos de ordens pendentes, como, por exemplo, ordens BuyTime, SellTime, BuyTimeStop, SellTimeStop, etc.
As construções gráficas existentes não são suficientes para criar ordens personalizadas completas. Portanto, retornaremos a este tópico se tivermos essa funcionalidade na biblioteca.

Por enquanto, corrigiremos algumas falhas nas classes descendentes do objeto da solicitação pendente abstrata e criaremos a funcionalidade de negociação em falta planejada para hoje.

Implementação

Acontece que, para exibir as descrições de ordens pendentes, como visto, não temos uma função que simplesmente exiba seus nomes. Porém, temos a função OrderTypeDescription() que exibe suas descrições+nomes. Basta simplesmente remover o texto da descrição a partir do resultado do retorno desta função, deixando apenas o nome da ordem.
No arquivo de funções de serviço \MQL5\Include\DoEasy\Services\DELib.mqh aprimoramos a função que retorna o nome da ordem:

//+------------------------------------------------------------------+
//| Return the order name                                            |
//+------------------------------------------------------------------+
string OrderTypeDescription(const ENUM_ORDER_TYPE type,bool as_order=true,bool prefix_for_market_order=true,bool descr=true)
  {
   string pref=
     (
      !prefix_for_market_order ? "" :
      #ifdef __MQL5__ CMessage::Text(MSG_ORD_MARKET) 
      #else/*__MQL4__*/(as_order ? CMessage::Text(MSG_ORD_MARKET) : CMessage::Text(MSG_ORD_POSITION)) #endif 
     );
   return
     (
      type==ORDER_TYPE_BUY_LIMIT       ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Buy Limit"       :
      type==ORDER_TYPE_BUY_STOP        ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Buy Stop"        :
      type==ORDER_TYPE_SELL_LIMIT      ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Sell Limit"      :
      type==ORDER_TYPE_SELL_STOP       ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Sell Stop"       :
   #ifdef __MQL5__
      type==ORDER_TYPE_BUY_STOP_LIMIT  ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Buy Stop Limit"  :
      type==ORDER_TYPE_SELL_STOP_LIMIT ?  (descr ? CMessage::Text(MSG_ORD_PENDING) : "")+" Sell Stop Limit" :
      type==ORDER_TYPE_CLOSE_BY        ?  CMessage::Text(MSG_ORD_CLOSE_BY)                                  :  
   #else 
      type==ORDER_TYPE_BALANCE         ?  CMessage::Text(MSG_LIB_PROP_BALANCE)                              :
      type==ORDER_TYPE_CREDIT          ?  CMessage::Text(MSG_LIB_PROP_CREDIT)                               :
   #endif 
      type==ORDER_TYPE_BUY             ?  pref+" Buy"                                                       :
      type==ORDER_TYPE_SELL            ?  pref+" Sell"                                                      :  
      CMessage::Text(MSG_ORD_UNKNOWN_TYPE)
     );
  }
//+------------------------------------------------------------------+

A função sempre retorna, antes do tipo de ordem pendente, o texto 'ordem pendente'.
Para que a função possa simplesmente exibir uma descrição do tipo de ordem sem este texto preliminar, adicionamos o sinalizador que indica que é necessário exibir o texto 'ordem pendente'. Portanto, se o sinalizador estiver desmarcado (valor false), não será exibido o texto preliminar 'ordem pendente'.

Em seguida.
Nos métodos de exibição de nome abreviado de solicitação, contidos nos arquivos das classes dos objetos-herdeiros da solicitação pendente base, corrigimos a exibição da descrição abreviada de solicitação pendente. Para fazer isso, ao texto da descrição da solicitação adicionamos o tipo de ordem/posição, depois dele, o ticket (se disponível na classe) e, em seguida, separado por vírgula, o ID da solicitação pendente. Agora está mal feito, pois, primeiro, é exibida uma descrição da solicitação, depois o identificador e, em seguida, o ticket separado por vírgula.

Alterações na classe do objeto-solicitação pendente para abertura de posição:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqOpen::Header(void)
  {
   string type=PositionTypeDescription((ENUM_POSITION_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE));
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_OPEN)+" "+type+", ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Alterações na classe do objeto-solicitação pendente para fechamento de posição:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqClose::Header(void)
  {
   string type=PositionTypeDescription((ENUM_POSITION_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE));
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_CLOSE)+" "+type+" #"+(string)this.GetProperty(PEND_REQ_PROP_MQL_REQ_POSITION)+", ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Alterações na classe do objeto-solicitação pendente para modificação do StopLoss e/ou TakeProfit da posição:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqSLTP::Header(void)
  {
   string type=PositionTypeDescription((ENUM_POSITION_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE));
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_SLTP)+" "+type+" #"+(string)this.GetProperty(PEND_REQ_PROP_MQL_REQ_POSITION)+", ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Alterações na classe do objeto-solicitação pendente para posicionamento de ordem pendente:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqPlace::Header(void)
  {
   string type=OrderTypeDescription((ENUM_ORDER_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE),true,false,false);
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_PLACE)+type+", ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Alterações na classe do objeto-solicitação pendente para exclusão de ordem pendente:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqRemove::Header(void)
  {
   string type=OrderTypeDescription((ENUM_ORDER_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE),true,false,false);
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_REMOVE)+type+" #"+(string)this.GetProperty(PEND_REQ_PROP_MQL_REQ_ORDER)+", ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Alterações na classe do objeto-solicitação pendente para modificação de propriedades de ordem pendente:

//+------------------------------------------------------------------+
//| Return the short request name                                    |
//+------------------------------------------------------------------+
string CPendReqModify::Header(void)
  {
   string type=OrderTypeDescription((ENUM_ORDER_TYPE)this.GetProperty(PEND_REQ_PROP_MQL_REQ_TYPE),true,false,false);
   return CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_STATUS_MODIFY)+type+", #"+(string)this.GetProperty(PEND_REQ_PROP_MQL_REQ_ORDER)+" ID #"+(string)this.GetProperty(PEND_REQ_PROP_ID);
  }
//+------------------------------------------------------------------+

Na sessão pública, contida no arquivo TradingControl.mqh da classe de gerenciamento de negociação CTradingControl, escrevemos a declaração de métodos para criação de uma solicitação pendente para exclusão de ordem pendente, para modificação de de StopLoss/TakeProfit da posição e para alteração dos parâmetros da ordem pendente:

//--- Create a pending request (1) for full and partial position closure, (2) for closing a position by an opposite one, (3) for removing an order
   int                  CreatePReqClose(const ulong ticket,const double volume=WRONG_VALUE,const string comment=NULL,const ulong deviation=ULONG_MAX);
   int                  CreatePReqCloseBy(const ulong ticket,const ulong ticket_by);
   int                  CreatePreqDelete(const ulong ticket);

//--- Create a pending request to modify (1) position's stop orders, (2) an order
   template<typename SL,typename TP> 
   int                  CreatePReqModifyPosition(const ulong ticket,const SL sl=WRONG_VALUE,const TP tp=WRONG_VALUE);
   template<typename PS,typename PL,typename SL,typename TP>
   int                  CreatePReqModifyOrder(const ulong ticket,
                                              const PS price=WRONG_VALUE,
                                              const SL sl=WRONG_VALUE,
                                              const TP tp=WRONG_VALUE,
                                              const PL limit=WRONG_VALUE,
                                              datetime expiration=WRONG_VALUE,
                                              const ENUM_ORDER_TYPE_TIME type_time=WRONG_VALUE,
                                              const ENUM_ORDER_TYPE_FILLING type_filling=WRONG_VALUE);
   
//--- Set pending request activation criteria
   bool                 SetNewActivationProperties(const uchar id,
                                                   const ENUM_PEND_REQ_ACTIVATION_SOURCE source,
                                                   const int property,
                                                   const double control_value,
                                                   const ENUM_COMPARER_TYPE comparer_type,
                                                   const double actual_value);
  };
//+------------------------------------------------------------------+

Fora do corpo da classe, escrevemos sua implementação:

//+------------------------------------------------------------------+
//| Create a pending request to remove a pending order               |
//+------------------------------------------------------------------+
int CTradingControl::CreatePreqDelete(const ulong ticket)
  {
//--- If the global trading ban flag is set, exit and return WRONG_VALUE
   if(this.IsTradingDisable())
     {
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_TEXT_TRADING_DISABLE));
      return WRONG_VALUE;
     }
//--- Set the error flag as "no errors"
   this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_NO_ERROR;
   ENUM_ACTION_TYPE action=ACTION_TYPE_CLOSE;
//--- Get an order object by ticket
   COrder *order=this.GetOrderObjByTicket(ticket);
   if(order==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_ORD_OBJ));
      return WRONG_VALUE;
     }
   ENUM_ORDER_TYPE order_type=(ENUM_ORDER_TYPE)order.TypeOrder();
//--- Get a symbol object by an order ticket
   CSymbol *symbol_obj=this.GetSymbolObjByOrder(ticket,DFUN);
   if(symbol_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_SYM_OBJ));
      return WRONG_VALUE;
     }
//--- get a trading object from a symbol object
   CTradeObj *trade_obj=symbol_obj.GetTradeObj();
   if(trade_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_TRADE_OBJ));
      return WRONG_VALUE;
     }
//--- Update symbol quotes
   if(!symbol_obj.RefreshRates())
     {
      trade_obj.SetResultRetcode(10021);
      trade_obj.SetResultComment(CMessage::Text(trade_obj.GetResultRetcode()));
      this.AddErrorCodeToList(10021);  // No quotes to handle the request
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(10021));
      return WRONG_VALUE;
     }
     
//--- Look for the least of the possible IDs. If failed to find, return WRONG_VALUE
   int id=this.GetFreeID();
   if(id<1)
     {
      //--- No free IDs to create a pending request
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_TEXT_PEND_REQUEST_NO_FREE_IDS));
      return WRONG_VALUE;
     }

   //--- Set the trading operation type, as well as deleted order's symbol and ticket in the request structure
   this.m_request.action=TRADE_ACTION_REMOVE;
   this.m_request.symbol=symbol_obj.Name();
   this.m_request.order=ticket;
   this.m_request.type=order_type;
   this.m_request.volume=order.Volume();
   this.m_request.price=order.PriceOpen();
//--- As a result of creating a pending trading request, return either its ID or -1 if unsuccessful
   if(this.CreatePendingRequest(PEND_REQ_STATUS_REMOVE,(uchar)id,1,ulong(END_TIME-(ulong)::TimeCurrent()),this.m_request,0,symbol_obj,order))
      return id;
   return WRONG_VALUE;
  }
//+------------------------------------------------------------------+
//| Create a pending request to modify position's stop orders        |
//+------------------------------------------------------------------+
template<typename SL,typename TP> 
int CTradingControl::CreatePReqModifyPosition(const ulong ticket,const SL sl=WRONG_VALUE,const TP tp=WRONG_VALUE)
  {
//--- If the global trading ban flag is set, exit and return WRONG_VALUE
   if(this.IsTradingDisable())
     {
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_TEXT_TRADING_DISABLE));
      return WRONG_VALUE;
     }
//--- Set the error flag as "no errors"
   this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_NO_ERROR;
   ENUM_ACTION_TYPE action=ACTION_TYPE_MODIFY;
//--- Get an order object by ticket
   COrder *order=this.GetOrderObjByTicket(ticket);
   if(order==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_ORD_OBJ));
      return WRONG_VALUE;
     }
   ENUM_ORDER_TYPE order_type=(ENUM_ORDER_TYPE)order.TypeOrder();
//--- Get a symbol object by a position ticket
   CSymbol *symbol_obj=this.GetSymbolObjByPosition(ticket,DFUN);
   if(symbol_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_SYM_OBJ));
      return WRONG_VALUE;
     }
//--- Get a trading object from a symbol object
   CTradeObj *trade_obj=symbol_obj.GetTradeObj();
   if(trade_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_TRADE_OBJ));
      return WRONG_VALUE;
     }
//--- Set the prices
//--- If failed to set - write the "internal error" flag, set the error code in the return structure,
//--- display the message in the journal and return 'false'
   if(!this.SetPrices(order_type,0,(sl==WRONG_VALUE ? order.StopLoss() : sl),(tp==WRONG_VALUE ? order.TakeProfit() : tp),0,DFUN,symbol_obj))
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      trade_obj.SetResultRetcode(10021);
      trade_obj.SetResultComment(CMessage::Text(trade_obj.GetResultRetcode()));
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(10021));   // No quotes to process the request
      return WRONG_VALUE;
     }
//--- Look for the least of the possible IDs. If failed to find, return 'false'
   int id=this.GetFreeID();
   if(id<1)
      return WRONG_VALUE;
            
//--- Write a type of a conducted operation, as well as a symbol and a ticket of a modified position to the request structure
   this.m_request.action=TRADE_ACTION_SLTP;
   this.m_request.symbol=symbol_obj.Name();
   this.m_request.position=ticket;
   this.m_request.type=order_type;
   this.m_request.volume=order.Volume();
//--- As a result of creating a pending trading request, return either its ID or -1 if unsuccessful
   if(this.CreatePendingRequest(PEND_REQ_STATUS_SLTP,(uchar)id,1,ulong(END_TIME-(ulong)::TimeCurrent()),this.m_request,0,symbol_obj,order))
      return id;
   return WRONG_VALUE;
  }
//+------------------------------------------------------------------+
//| Create a pending request to modify a pending order               |
//+------------------------------------------------------------------+
template<typename PS,typename PL,typename SL,typename TP>
int CTradingControl::CreatePReqModifyOrder(const ulong ticket,
                                           const PS price=WRONG_VALUE,
                                           const SL sl=WRONG_VALUE,
                                           const TP tp=WRONG_VALUE,
                                           const PL limit=WRONG_VALUE,
                                           datetime expiration=WRONG_VALUE,
                                           const ENUM_ORDER_TYPE_TIME type_time=WRONG_VALUE,
                                           const ENUM_ORDER_TYPE_FILLING type_filling=WRONG_VALUE)
  {
//--- If the global trading ban flag is set, exit and return WRONG_VALUE
   if(this.IsTradingDisable())
     {
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_TEXT_TRADING_DISABLE));
      return WRONG_VALUE;
     }
//--- Set the error flag as "no errors"
   this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_NO_ERROR;
   ENUM_ACTION_TYPE action=ACTION_TYPE_MODIFY;
//--- Get an order object by ticket
   COrder *order=this.GetOrderObjByTicket(ticket);
   if(order==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_ORD_OBJ));
      return false;
     }
   ENUM_ORDER_TYPE order_type=(ENUM_ORDER_TYPE)order.TypeOrder();
//--- Get a symbol object by an order ticket
   CSymbol *symbol_obj=this.GetSymbolObjByOrder(ticket,DFUN);
   if(symbol_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_SYM_OBJ));
      return false;
     }
//--- get a trading object from a symbol object
   CTradeObj *trade_obj=symbol_obj.GetTradeObj();
   if(trade_obj==NULL)
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_ERROR_FAILED_GET_TRADE_OBJ));
      return false;
     }
//--- Set the prices
//--- If failed to set - write the "internal error" flag, set the error code in the return structure,
//--- display the message in the journal and return 'false'
   if(!this.SetPrices(order_type,
                      (price>0 ? price : order.PriceOpen()),
                      (sl>0 ? sl : sl<0 ? order.StopLoss() : 0),
                      (tp>0 ? tp : tp<0 ? order.TakeProfit() : 0),
                      (limit>0 ? limit : order.PriceStopLimit()),
                      DFUN,symbol_obj))
     {
      this.m_error_reason_flags=TRADE_REQUEST_ERR_FLAG_INTERNAL_ERR;
      trade_obj.SetResultRetcode(10021);
      trade_obj.SetResultComment(CMessage::Text(trade_obj.GetResultRetcode()));
      if(this.m_log_level>LOG_LEVEL_NO_MSG)
         ::Print(DFUN,CMessage::Text(10021));   // No quotes to process the request
      return false;
     }
//--- Look for the least of the possible IDs. If failed to find, return 'false'
   int id=this.GetFreeID();
   if(id<1)
      return WRONG_VALUE;
            
//--- Write the magic number, volume, filling type, as well as expiration date and type to the request structure
   this.m_request.magic=order.GetMagicID((uint)order.Magic());
   this.m_request.volume=order.Volume();
   this.m_request.type_filling=(type_filling>WRONG_VALUE ? type_filling : order.TypeFilling());
   this.m_request.expiration=(expiration>WRONG_VALUE ? expiration : order.TimeExpiration());
   this.m_request.type_time=(type_time>WRONG_VALUE ? type_time : order.TypeTime());

   //--- Set the trading operation type, as well as modified order's symbol and ticket in the request structure
   this.m_request.action=TRADE_ACTION_MODIFY;
   this.m_request.symbol=symbol_obj.Name();
   this.m_request.order=ticket;
   this.m_request.type=order_type;
//--- As a result of creating a pending trading request, return either its ID or -1 if unsuccessful
   if(this.CreatePendingRequest(PEND_REQ_STATUS_MODIFY,(uchar)id,1,ulong(END_TIME-(ulong)::TimeCurrent()),this.m_request,0,symbol_obj,order))
      return id;
   return WRONG_VALUE;
  }
//+------------------------------------------------------------------+

A lógica dos métodos é absolutamente idêntica à dos métodos que criamos anteriormente para criar solicitações pendentes que permitiam abrir/fechar posições e definir ordens pendentes por condições, além disso, o código dos métodos é comentado em detalhes, portanto, nós os deixaremos para estudá-los por conta própria.

Agora adicionamos o acesso do programa aos métodos criados. Para fazer isso, escrevemos a chamada para esses métodos a partir dos métodos da classe do objeto principal da biblioteca.
Na classe CEngine escrevemos a atualização de métodos de criação de solicitações pendentes para excluir ordens pendentes, paga modificar StopLoss/TakeProfit e para alterar os parâmetros da ordem pendente:

//--- Create a pending request for closing a position (1) fully, (2) partially, (3) by an opposite one, (4) for removing an order
   int                  ClosePositionPending(const ulong ticket,const string comment=NULL,const ulong deviation=ULONG_MAX);
   int                  ClosePositionPartiallyPending(const ulong ticket,const double volume,const string comment=NULL,const ulong deviation=ULONG_MAX);
   int                  ClosePositionByPending(const ulong ticket,const ulong ticket_by);
   int                  DeleteOrderPending(const ulong ticket);

//--- Create a pending request to modify (1) a position, (2) an order
   template<typename SL,typename TP> 
   int                  ModifyPositionPending(const ulong ticket,const SL sl=WRONG_VALUE,const TP tp=WRONG_VALUE,const string comment=NULL);
   template<typename PR,typename SL,typename TP,typename PL>
   int                  ModifyOrderPending(const ulong ticket,
                                           const PR price=WRONG_VALUE,
                                           const SL sl=WRONG_VALUE,
                                           const TP tp=WRONG_VALUE,
                                           const PL stoplimit=WRONG_VALUE,
                                           datetime expiration=WRONG_VALUE,
                                           const ENUM_ORDER_TYPE_TIME type_time=WRONG_VALUE,
                                           const ENUM_ORDER_TYPE_FILLING type_filling=WRONG_VALUE);
                                   

Fora do corpo da classe, escrevemos a implementação dos métodos declarados:

//+------------------------------------------------------------------+
//| Create a pending request to remove a pending order               |
//+------------------------------------------------------------------+
int CEngine::DeleteOrderPending(const ulong ticket)
  {
   return this.m_trading.CreatePreqDelete(ticket);
  }
//+------------------------------------------------------------------+
//| Create a pending request to modify a position                    |
//+------------------------------------------------------------------+
template<typename SL,typename TP>
int CEngine::ModifyPositionPending(const ulong ticket,const SL sl=WRONG_VALUE,const TP tp=WRONG_VALUE,const string comment=NULL)
  {
   return this.m_trading.CreatePReqModifyPosition(ticket,sl,tp);
  }
//+------------------------------------------------------------------+
//| Create a pending request to modify an order                      |
//+------------------------------------------------------------------+
template<typename PR,typename SL,typename TP,typename PL>
int CEngine::ModifyOrderPending(const ulong ticket,
                                const PR price=WRONG_VALUE,
                                const SL sl=WRONG_VALUE,
                                const TP tp=WRONG_VALUE,
                                const PL stoplimit=WRONG_VALUE,
                                datetime expiration=WRONG_VALUE,
                                const ENUM_ORDER_TYPE_TIME type_time=WRONG_VALUE,
                                const ENUM_ORDER_TYPE_FILLING type_filling=WRONG_VALUE)
  {
   return this.m_trading.CreatePReqModifyOrder(ticket,price,sl,tp,stoplimit,expiration,type_time,type_filling);
  }
//+------------------------------------------------------------------+

Os métodos simplesmente retornam o resultado da chamada dos respectivos métodos de criação de solicitações pendentes da classe CTradingControl, métodos esses que escrevemos acima.

Essas são todas as alterações necessárias que permitem adicionar à biblioteca a funcionalidade de trabalho com solicitações pendentes para excluir ordens e modificar ordens e posições.
Certamente, foram adicionalmente introduzidas pequenas alterações (nomes dos parâmetros dos modelos) que afetam apenas a percepção visual do código dos métodos, por isso, não vamos estudá-las aqui.

Teste

Para testar a funcionalidade criada, pegamos o EA do artigo anterior e o salvamos na nova pasta \MQL5\Experts\TestDoEasy\ Part34\ usando o novo nome TestDoEasyPart34.mq5.

Da mesma maneira como fizemos com os EAs anteriores para testar o funcionamento das solicitações pendentes, para este EA criaremos botões de ativação de modos de trabalho ao usarmos solicitações pendentes — para os botões que permitem excluir todas as ordens pendentes (Delete pending), fechar todas as posições (Close all), bem como posicionar StopLoss e TakeProfit de ordens e de posições que não têm esses níves de stop (Set StopLoss e Set TakeProfit).

Como o pressionamento desses botões desencadeia o processamento em lote de todas as ordens e posições existentes, o fato de incluirmos os botões de ativação ao usarmos solicitações pendentes nos permitirá verificar o funcionamento de solicitações pendentes para conjuntos de ordens e posições.

No painel de negociação do EA de teste, a disposição dos botões não é muito conveniente, uma vez que o botão para retirar fundos ganhos está localizado entre os botões para excluir ordens, fechar posições e colocar ordens de stop. Movemos este botão para baixodepois do botão Set TakeProfit. Para fazer isso, basta alterar a localização das constantes na enumeração de botões dispostos no painel de negociação do EA de teste:

//+------------------------------------------------------------------+
//|                                             TestDoEasyPart34.mq5 |
//|                        Copyright 2018, MetaQuotes Software Corp. |
//|                             https://mql5.com/en/users/artmedia70 |
//+------------------------------------------------------------------+
#property copyright "Copyright 2019, MetaQuotes Software Corp."
#property link      "https://mql5.com/en/users/artmedia70"
#property version   "1.00"
//--- includes
#include <DoEasy\Engine.mqh>
//--- enums
enum ENUM_BUTTONS
  {
   BUTT_BUY,
   BUTT_BUY_LIMIT,
   BUTT_BUY_STOP,
   BUTT_BUY_STOP_LIMIT,
   BUTT_CLOSE_BUY,
   BUTT_CLOSE_BUY2,
   BUTT_CLOSE_BUY_BY_SELL,
   BUTT_SELL,
   BUTT_SELL_LIMIT,
   BUTT_SELL_STOP,
   BUTT_SELL_STOP_LIMIT,
   BUTT_CLOSE_SELL,
   BUTT_CLOSE_SELL2,
   BUTT_CLOSE_SELL_BY_BUY,
   BUTT_DELETE_PENDING,
   BUTT_CLOSE_ALL,
   BUTT_SET_STOP_LOSS,
   BUTT_SET_TAKE_PROFIT,
   BUTT_PROFIT_WITHDRAWAL,
   BUTT_TRAILING_ALL
  };
#define TOTAL_BUTT   (20)

À lista de variáveis globais adicionamos os sinalizadores que indicam o estado dos botões de ativação de solicitações pendentes para excluir ordens pendentes, fechar posições e modificar níveis de stop, também acrescentamos duas variáveis para armazenar os valores Point e Digits do símbolo atual:

//--- global variables
CEngine        engine;
SDataButt      butt_data[TOTAL_BUTT];
string         prefix;
double         lot;
double         withdrawal=(InpWithdrawal<0.1 ? 0.1 : InpWithdrawal);
ushort         magic_number;
uint           stoploss;
uint           takeprofit;
uint           distance_pending;
uint           distance_stoplimit;
uint           distance_pending_request;
uint           bars_delay_pending_request;
uint           slippage;
bool           trailing_on;
bool           pressed_pending_buy;
bool           pressed_pending_buy_limit;
bool           pressed_pending_buy_stop;
bool           pressed_pending_buy_stoplimit;
bool           pressed_pending_close_buy;
bool           pressed_pending_close_buy2;
bool           pressed_pending_close_buy_by_sell;
bool           pressed_pending_sell;
bool           pressed_pending_sell_limit;
bool           pressed_pending_sell_stop;
bool           pressed_pending_sell_stoplimit;
bool           pressed_pending_close_sell;
bool           pressed_pending_close_sell2;
bool           pressed_pending_close_sell_by_buy;
bool           pressed_pending_delete_all;
bool           pressed_pending_close_all;
bool           pressed_pending_sl;
bool           pressed_pending_tp;
double         trailing_stop;
double         trailing_step;
uint           trailing_start;
uint           stoploss_to_modify;
uint           takeprofit_to_modify;
int            used_symbols_mode;
string         used_symbols;
string         array_used_symbols[];
bool           testing;
uchar          group1;
uchar          group2;
double         g_point;
int            g_digits;
//+------------------------------------------------------------------+

No manipulador OnInit() do EA às variáveis correspondentes atribuímos os valores Point e Digits do símbolo atual:

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- Calling the function displays the list of enumeration constants in the journal 
//--- (the list is set in the strings 22 and 25 of the DELib.mqh file) for checking the constants validity
   //EnumNumbersTest();

//--- Set EA global variables
   prefix=MQLInfoString(MQL_PROGRAM_NAME)+"_";
   testing=engine.IsTester();
   for(int i=0;i<TOTAL_BUTT;i++)
     {
      butt_data[i].name=prefix+EnumToString((ENUM_BUTTONS)i);
      butt_data[i].text=EnumToButtText((ENUM_BUTTONS)i);
     }
   lot=NormalizeLot(Symbol(),fmax(InpLots,MinimumLots(Symbol())*2.0));
   magic_number=InpMagic;
   stoploss=InpStopLoss;
   takeprofit=InpTakeProfit;
   distance_pending=InpDistance;
   distance_stoplimit=InpDistanceSL;
   slippage=InpSlippage;
   trailing_stop=InpTrailingStop*Point();
   trailing_step=InpTrailingStep*Point();
   trailing_start=InpTrailingStart;
   stoploss_to_modify=InpStopLossModify;
   takeprofit_to_modify=InpTakeProfitModify;
   distance_pending_request=(InpDistancePReq<5 ? 5 : InpDistancePReq);
   bars_delay_pending_request=(InpBarsDelayPReq<1 ? 1 : InpBarsDelayPReq);
   g_point=SymbolInfoDouble(NULL,SYMBOL_POINT);
   g_digits=(int)SymbolInfoInteger(NULL,SYMBOL_DIGITS);
//--- Initialize random group numbers
   group1=0;
   group2=0;
   srand(GetTickCount());
   
//--- Initialize DoEasy library
   OnInitDoEasy();
   
//--- Check and remove remaining EA graphical objects
   if(IsPresentObects(prefix))
      ObjectsDeleteAll(0,prefix);

//--- Create the button panel
   if(!CreateButtons(InpButtShiftX,InpButtShiftY))
      return INIT_FAILED;
//--- Set trailing activation button status
   ButtonState(butt_data[TOTAL_BUTT-1].name,trailing_on);
//--- Reset states of the buttons for working using pending requests
   for(int i=0;i<14;i++)
     {
      ButtonState(butt_data[i].name+"_PRICE",false);
      ButtonState(butt_data[i].name+"_TIME",false);
     }

//--- Check playing a standard sound by macro substitution and a custom sound by description
   engine.PlaySoundByDescription(SND_OK);
   Sleep(600);
   engine.PlaySoundByDescription(TextByLanguage("Звук упавшей монетки 2","Falling coin 2"));

//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+

Na função de criação de botões corrigimos o código de criação de botões adicionais para ativar o modo de trabalho com solicitações pendentes:

//+------------------------------------------------------------------+
//| Create the buttons panel                                         |
//+------------------------------------------------------------------+
bool CreateButtons(const int shift_x=20,const int shift_y=0)
  {
   int h=18,w=82,offset=2,wpt=14;
   int cx=offset+shift_x+wpt*2+2,cy=offset+shift_y+(h+1)*(TOTAL_BUTT/2)+3*h+1;
   int x=cx,y=cy;
   int shift=0;
   for(int i=0;i<TOTAL_BUTT;i++)
     {
      x=x+(i==7 ? w+2 : 0);
      if(i==TOTAL_BUTT-6) x=cx;
      y=(cy-(i-(i>6 ? 7 : 0))*(h+1));
      if(!ButtonCreate(butt_data[i].name,x,y,(i<TOTAL_BUTT-6 ? w : w*2+2),h,butt_data[i].text,(i<4 ? clrGreen : i>6 && i<11 ? clrRed : clrBlue)))
        {
         Alert(TextByLanguage("Не удалось создать кнопку \"","Could not create button \""),butt_data[i].text);
         return false;
        }
     }
   
   h=18; offset=2;
   cx=offset+shift_x; cy=offset+shift_y+(h+1)*(TOTAL_BUTT/2)+3*h+1;
   x=cx; y=cy;
   shift=0;
   for(int i=0;i<18;i++)
     {
      y=(cy-(i-(i>6 ? 7 : 0))*(h+1));
      if(!ButtonCreate(butt_data[i].name+"_PRICE",((i>6 && i<14) || i>17 ? x+wpt*2+w*2+5 : x),y,wpt,h,"P",(i<4 ? clrGreen : i>6 && i<11 ? clrChocolate : clrBlue)))
        {
         Alert(TextByLanguage("Не удалось создать кнопку \"","Could not create button \""),butt_data[i].text+" \"P\"");
         return false;
        }
      if(!ButtonCreate(butt_data[i].name+"_TIME",((i>6 && i<14) || i>17 ? x+wpt*2+w*2+5+wpt+1 : x+wpt+1),y,wpt,h,"T",(i<4 ? clrGreen : i>6 && i<11 ? clrChocolate : clrBlue)))
        {
         Alert(TextByLanguage("Не удалось создать кнопку \"","Could not create button \""),butt_data[i].text+" \"T\"");
         return false;
        }
     }
   ChartRedraw(0);
   return true;
  }
//+------------------------------------------------------------------+

Todas as alterações afetam apenas o controle do número de série dos botões criados para definir as coordenadas desejadas.

As principais alterações têm a ver com o processamento de pressionamentos de botões no painel de negociação do EA.
Adicionamos os códigos de processamento dos botões pressionados dispostos no painel de negociação:

//+------------------------------------------------------------------+
//| Handle pressing the buttons                                      |
//+------------------------------------------------------------------+
void PressButtonEvents(const string button_name)
  {
   bool comp_magic=true;   // Temporary variable selecting the composite magic number with random group IDs
   string comment="";
   //--- Convert button name into its string ID
   string button=StringSubstr(button_name,StringLen(prefix));
   //--- Random group 1 and 2 numbers within the range of 0 - 15
   group1=(uchar)Rand();
   group2=(uchar)Rand();
   uint magic=(comp_magic ? engine.SetCompositeMagicNumber(magic_number,group1,group2) : magic_number);
   //--- If the button is pressed
   if(ButtonState(button_name))
     {
      //--- If the BUTT_BUY button is pressed: Open Buy position
      if(button==EnumToString(BUTT_BUY))
        {
         //--- If the pending request creation buttons are not pressed, open Buy 
         if(!pressed_pending_buy)
            engine.OpenBuy(lot,Symbol(),magic,stoploss,takeprofit);   // No comment - the default comment is to be set
         //--- Otherwise, create a pending request for opening a Buy position
         else
           {
            int id=engine.OpenBuyPending(lot,Symbol(),magic,stoploss,takeprofit);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
               double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_BUY,EQUAL_OR_LESS,ask,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_BUY_LIMIT button is pressed: Place BuyLimit
      else if(button==EnumToString(BUTT_BUY_LIMIT))
        {
         //--- If the pending request creation buttons are not pressed, set BuyLimit
         if(!pressed_pending_buy_limit)
            engine.PlaceBuyLimit(lot,Symbol(),distance_pending,stoploss,takeprofit,magic,TextByLanguage("Отложенный BuyLimit","Pending BuyLimit order"));
         //--- Otherwise, create a pending request to place a BuyLimit order with the placement distance
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceBuyLimitPending(lot,Symbol(),distance_pending,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
               double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_BUY_LIMIT,EQUAL_OR_LESS,ask,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_BUY_STOP button is pressed: Set BuyStop
      else if(button==EnumToString(BUTT_BUY_STOP))
        {
         //--- If the pending request creation buttons are not pressed, set BuyStop
         if(!pressed_pending_buy_stop)
            engine.PlaceBuyStop(lot,Symbol(),distance_pending,stoploss,takeprofit,magic,TextByLanguage("Отложенный BuyStop","Pending BuyStop order"));
         //--- Otherwise, create a pending request to place a BuyStop order with the placement distance
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceBuyStopPending(lot,Symbol(),distance_pending,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
               double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_BUY_STOP,EQUAL_OR_LESS,ask,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_BUY_STOP_LIMIT button is pressed: Set BuyStopLimit
      else if(button==EnumToString(BUTT_BUY_STOP_LIMIT))
        {
         //--- If the pending request creation buttons are not pressed, set BuyStopLimit
         if(!pressed_pending_buy_stoplimit)
            engine.PlaceBuyStopLimit(lot,Symbol(),distance_pending,distance_stoplimit,stoploss,takeprofit,magic,TextByLanguage("Отложенный BuyStopLimit","Pending BuyStopLimit order"));
         //--- Otherwise, create a pending request to place a BuyStopLimit order with the placement distances
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceBuyStopLimitPending(lot,Symbol(),distance_pending,distance_stoplimit,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
               double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_BUY_STOP_LIMIT,EQUAL_OR_LESS,ask,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_SELL button is pressed: Open Sell position
      else if(button==EnumToString(BUTT_SELL))
        {
         //--- If the pending request creation buttons are not pressed, open Sell
         if(!pressed_pending_sell)
            engine.OpenSell(lot,Symbol(),magic,stoploss,takeprofit);  // No comment - the default comment is to be set
         //--- Otherwise, create a pending request for opening a Sell position
         else
           {
            int id=engine.OpenSellPending(lot,Symbol(),magic,stoploss,takeprofit);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
               double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SELL,EQUAL_OR_MORE,bid,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_SELL_LIMIT button is pressed: Set SellLimit
      else if(button==EnumToString(BUTT_SELL_LIMIT))
        {
         //--- If the pending request creation buttons are not pressed, set SellLimit
         if(!pressed_pending_sell_limit)
            engine.PlaceSellLimit(lot,Symbol(),distance_pending,stoploss,takeprofit,magic,TextByLanguage("Отложенный SellLimit","Pending SellLimit order"));
         //--- Otherwise, create a pending request to place a SellLimit order with the placement distance
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceSellLimitPending(lot,Symbol(),distance_pending,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
               double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SELL_LIMIT,EQUAL_OR_MORE,bid,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_SELL_STOP button is pressed: Set SellStop
      else if(button==EnumToString(BUTT_SELL_STOP))
        {
         //--- If the pending request creation buttons are not pressed, set SellStop
         if(!pressed_pending_sell_stop)
            engine.PlaceSellStop(lot,Symbol(),distance_pending,stoploss,takeprofit,magic,TextByLanguage("Отложенный SellStop","Pending SellStop order"));
         //--- Otherwise, create a pending request to place a SellStop order with the placement distance
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceSellStopPending(lot,Symbol(),distance_pending,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
               double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SELL_STOP,EQUAL_OR_MORE,bid,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_SELL_STOP_LIMIT button is pressed: Set SellStopLimit
      else if(button==EnumToString(BUTT_SELL_STOP_LIMIT))
        {
         //--- If the pending request creation buttons are not pressed, set SellStopLimit
         if(!pressed_pending_sell_stoplimit)
            engine.PlaceSellStopLimit(lot,Symbol(),distance_pending,distance_stoplimit,stoploss,takeprofit,magic,TextByLanguage("Отложенный SellStopLimit","Pending SellStopLimit order"));
         //--- Otherwise, create a pending request to place a SellStopLimit order with the placement distances
         //--- and set the conditions depending on active buttons
         else
           {
            int id=engine.PlaceSellStopLimitPending(lot,Symbol(),distance_pending,distance_stoplimit,stoploss,takeprofit,magic);
            if(id>0)
              {
               //--- set the pending request activation price and time, as well as activation parameters
               double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
               double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
               ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
               SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SELL_STOP_LIMIT,EQUAL_OR_MORE,bid,TimeCurrent());
              }
           }
        }
      //--- If the BUTT_CLOSE_BUY button is pressed: Close Buy with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_BUY))
        {
         //--- Get the list of all open positions
         CArrayObj* list=engine.GetListMarketPosition();
         //--- Select only Buy positions from the list and for the current symbol only
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         list=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_BUY,EQUAL);
         //--- Sort the list by profit considering commission and swap
         list.Sort(SORT_BY_ORDER_PROFIT_FULL);
         //--- Get the index of the Buy position with the maximum profit
         int index=CSelect::FindOrderMax(list,ORDER_PROP_PROFIT_FULL);
         if(index>WRONG_VALUE)
           {
            //--- Get the Buy position object and close a position by ticket
            COrder* position=list.At(index);
            if(position!=NULL)
              {
               //--- If the pending request creation buttons are not pressed, close a position
               if(!pressed_pending_close_buy)
                  engine.ClosePosition((ulong)position.Ticket());
               //--- Otherwise, create a pending request for closing a position by ticket
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.ClosePositionPending(position.Ticket());
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
                     double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_BUY,EQUAL_OR_MORE,bid,TimeCurrent());
                    }
                 }
              }
           }
        }
      //--- If the BUTT_CLOSE_BUY2 button is pressed: Close the half of the Buy with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_BUY2))
        {
         //--- Get the list of all open positions
         CArrayObj* list=engine.GetListMarketPosition();
         //--- Select only Buy positions from the list and for the current symbol only
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         list=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_BUY,EQUAL);
         //--- Sort the list by profit considering commission and swap
         list.Sort(SORT_BY_ORDER_PROFIT_FULL);
         //--- Get the index of the Buy position with the maximum profit
         int index=CSelect::FindOrderMax(list,ORDER_PROP_PROFIT_FULL);
         if(index>WRONG_VALUE)
           {
            //--- Get the Buy position object and close a position by ticket
            COrder* position=list.At(index);
            if(position!=NULL)
              {
               //--- If the pending request creation buttons are not pressed, close a position by ticket
               if(!pressed_pending_close_buy2)
                  engine.ClosePositionPartially((ulong)position.Ticket(),position.Volume()/2.0);
               //--- Otherwise, create a pending request for closing a position partially by ticket
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.ClosePositionPartiallyPending(position.Ticket(),position.Volume()/2.0);
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
                     double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_BUY2,EQUAL_OR_MORE,bid,TimeCurrent());
                    }
                 }
              }
           }
        }
      //--- If the BUTT_CLOSE_BUY_BY_SELL button is pressed: Close Buy with the maximum profit by the opposite Sell with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_BUY_BY_SELL))
        {
         //--- In case of a hedging account
         if(engine.IsHedge())
           {
            CArrayObj *list_buy=NULL, *list_sell=NULL;
            //--- Get the list of all open positions
            CArrayObj* list=engine.GetListMarketPosition();
            if(list==NULL)
               return;
            //--- Select only current symbol positions from the list
            list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
            
            //--- Select only Buy positions from the list
            list_buy=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_BUY,EQUAL);
            if(list_buy==NULL)
               return;
            //--- Sort the list by profit considering commission and swap
            list_buy.Sort(SORT_BY_ORDER_PROFIT_FULL);
            //--- Get the index of the Buy position with the maximum profit
            int index_buy=CSelect::FindOrderMax(list_buy,ORDER_PROP_PROFIT_FULL);
            
            //--- Select only Sell positions from the list
            list_sell=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_SELL,EQUAL);
            if(list_sell==NULL)
               return;
            //--- Sort the list by profit considering commission and swap
            list_sell.Sort(SORT_BY_ORDER_PROFIT_FULL);
            //--- Get the index of the Sell position with the maximum profit
            int index_sell=CSelect::FindOrderMax(list_sell,ORDER_PROP_PROFIT_FULL);
            if(index_buy>WRONG_VALUE && index_sell>WRONG_VALUE)
              {
               //--- Select the Buy position with the maximum profit
               COrder* position_buy=list_buy.At(index_buy);
               //--- Select the Sell position with the maximum profit
               COrder* position_sell=list_sell.At(index_sell);
               if(position_buy!=NULL && position_sell!=NULL)
                 {
                  //--- If the pending request creation buttons are not pressed, close positions by ticket
                  if(!pressed_pending_close_buy_by_sell)
                     engine.ClosePositionBy((ulong)position_buy.Ticket(),(ulong)position_sell.Ticket());
                  //--- Otherwise, create a pending request for closing a Buy position by an opposite Sell one
                  //--- and set the conditions depending on active buttons
                  else
                    {
                     int id=engine.ClosePositionByPending(position_buy.Ticket(),position_sell.Ticket());
                     if(id>0)
                       {
                        //--- set the pending request activation price and time, as well as activation parameters
                        double bid=SymbolInfoDouble(NULL,SYMBOL_BID);
                        double price_activation=NormalizeDouble(bid+distance_pending_request*g_point,g_digits);
                        ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                        SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_BUY_BY_SELL,EQUAL_OR_MORE,bid,TimeCurrent());
                       }
                    }
                 }
              }
           }
        }
        
      //--- If the BUTT_CLOSE_SELL button is pressed: Close Sell with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_SELL))
        {
         //--- Get the list of all open positions
         CArrayObj* list=engine.GetListMarketPosition();
         //--- Select only Sell positions from the list and for the current symbol only
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         list=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_SELL,EQUAL);
         //--- Sort the list by profit considering commission and swap
         list.Sort(SORT_BY_ORDER_PROFIT_FULL);
         //--- Get the index of the Sell position with the maximum profit
         int index=CSelect::FindOrderMax(list,ORDER_PROP_PROFIT_FULL);
         if(index>WRONG_VALUE)
           {
            //--- Get the Sell position object and close a position by ticket
            COrder* position=list.At(index);
            if(position!=NULL)
              {
               //--- If the pending request creation buttons are not pressed, close a position
               if(!pressed_pending_close_sell)
                  engine.ClosePosition((ulong)position.Ticket());
               //--- Otherwise, create a pending request for closing a position by ticket
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.ClosePositionPending(position.Ticket());
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
                     double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_SELL,EQUAL_OR_LESS,ask,TimeCurrent());
                    }
                 }
              }
           }
        }
      //--- If the BUTT_CLOSE_SELL2 button is pressed: Close the half of the Sell with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_SELL2))
        {
         //--- Get the list of all open positions
         CArrayObj* list=engine.GetListMarketPosition();
         //--- Select only Sell positions from the list and for the current symbol only
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         list=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_SELL,EQUAL);
         //--- Sort the list by profit considering commission and swap
         list.Sort(SORT_BY_ORDER_PROFIT_FULL);
         //--- Get the index of the Sell position with the maximum profit
         int index=CSelect::FindOrderMax(list,ORDER_PROP_PROFIT_FULL);
         if(index>WRONG_VALUE)
           {
            //--- Get the Sell position object and close a position by ticket
            COrder* position=list.At(index);
            if(position!=NULL)
              {
               //--- If the pending request creation buttons are not pressed, close a position by ticket
               if(!pressed_pending_close_sell2)
                  engine.ClosePositionPartially((ulong)position.Ticket(),position.Volume()/2.0);
               //--- Otherwise, create a pending request for closing a position partially by ticket
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.ClosePositionPartiallyPending(position.Ticket(),position.Volume()/2.0);
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
                     double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_SELL2,EQUAL_OR_LESS,ask,TimeCurrent());
                    }
                 }
              }
           }
        }
      //--- If the BUTT_CLOSE_SELL_BY_BUY button is pressed: Close Sell with the maximum profit by the opposite Buy with the maximum profit
      else if(button==EnumToString(BUTT_CLOSE_SELL_BY_BUY))
        {
         //--- In case of a hedging account
         if(engine.IsHedge())
           {
            CArrayObj *list_buy=NULL, *list_sell=NULL;
            //--- Get the list of all open positions
            CArrayObj* list=engine.GetListMarketPosition();
            if(list==NULL)
               return;
            //--- Select only current symbol positions from the list
            list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
            
            //--- Select only Sell positions from the list
            list_sell=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_SELL,EQUAL);
            if(list_sell==NULL)
               return;
            //--- Sort the list by profit considering commission and swap
            list_sell.Sort(SORT_BY_ORDER_PROFIT_FULL);
            //--- Get the index of the Sell position with the maximum profit
            int index_sell=CSelect::FindOrderMax(list_sell,ORDER_PROP_PROFIT_FULL);
            
            //--- Select only Buy positions from the list
            list_buy=CSelect::ByOrderProperty(list,ORDER_PROP_TYPE,POSITION_TYPE_BUY,EQUAL);
            if(list_buy==NULL)
               return;
            //--- Sort the list by profit considering commission and swap
            list_buy.Sort(SORT_BY_ORDER_PROFIT_FULL);
            //--- Get the index of the Buy position with the maximum profit
            int index_buy=CSelect::FindOrderMax(list_buy,ORDER_PROP_PROFIT_FULL);
            if(index_sell>WRONG_VALUE && index_buy>WRONG_VALUE)
              {
               //--- Select the Sell position with the maximum profit
               COrder* position_sell=list_sell.At(index_sell);
               //--- Select the Buy position with the maximum profit
               COrder* position_buy=list_buy.At(index_buy);
               if(position_sell!=NULL && position_buy!=NULL)
                 {
                  //--- If the pending request creation buttons are not pressed, close positions by ticket
                  if(!pressed_pending_close_sell_by_buy)
                     engine.ClosePositionBy((ulong)position_sell.Ticket(),(ulong)position_buy.Ticket());
                  //--- Otherwise, create a pending request for closing a Sell position by an opposite Buy one
                  //--- and set the conditions depending on active buttons
                  else
                    {
                     int id=engine.ClosePositionByPending(position_sell.Ticket(),position_buy.Ticket());
                     if(id>0)
                       {
                        //--- set the pending request activation price and time, as well as activation parameters
                        double ask=SymbolInfoDouble(NULL,SYMBOL_ASK);
                        double price_activation=NormalizeDouble(ask-distance_pending_request*g_point,g_digits);
                        ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                        SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_SELL_BY_BUY,EQUAL_OR_LESS,ask,TimeCurrent());
                       }
                    }
                 }
              }
           }
        }
      //--- If the BUTT_CLOSE_ALL is pressed: Close all positions starting with the one with the least profit
      else if(button==EnumToString(BUTT_CLOSE_ALL))
        {
         //--- Get the list of all open positions
         CArrayObj* list=engine.GetListMarketPosition();
         //--- Select only current symbol positions from the list
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         if(list!=NULL)
           {
            //--- Sort the list by profit considering commission and swap
            list.Sort(SORT_BY_ORDER_PROFIT_FULL);
            int total=list.Total();
            //--- In the loop from the position with the least profit
            for(int i=0;i<total;i++)
              {
               COrder* position=list.At(i);
               if(position==NULL)
                  continue;
               //--- If the pending request creation buttons are not pressed, close each position by its ticket
               if(!pressed_pending_close_all)
                  engine.ClosePosition((ulong)position.Ticket());
               //--- Otherwise, create a pending request for closing each position
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.ClosePositionPending(position.Ticket());
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double price=SymbolInfoDouble(NULL,SYMBOL_BID);
                     double price_activation=NormalizeDouble(position.PriceOpen()+distance_pending_request*g_point,g_digits);
                     ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
                     if(position.TypeOrder()==POSITION_TYPE_SELL)
                       {
                        price=SymbolInfoDouble(NULL,SYMBOL_ASK);
                        price_activation=NormalizeDouble(position.PriceOpen()-distance_pending_request*g_point,g_digits);
                        comparer=EQUAL_OR_LESS;
                       }
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_CLOSE_ALL,comparer,price,TimeCurrent());
                    }
                 }
              }
           }
        }
      //--- If the BUTT_DELETE_PENDING button is pressed: Remove pending orders starting from the oldest one
      else if(button==EnumToString(BUTT_DELETE_PENDING))
        {
         //--- Get the list of all orders
         CArrayObj* list=engine.GetListMarketPendings();
         //--- Select only current symbol orders from the list
         list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
         if(list!=NULL)
           {
            //--- Sort the list by placement time
            list.Sort(SORT_BY_ORDER_TIME_OPEN);
            int total=list.Total();
            //--- In a loop from an order with the longest time
            for(int i=total-1;i>=0;i--)
              {
               COrder* order=list.At(i);
               if(order==NULL)
                  continue;
               //--- If the pending request creation buttons are not pressed, remove each order by its ticket
               if(!pressed_pending_delete_all)
                  engine.DeleteOrder((ulong)order.Ticket());
               //--- Otherwise, create a pending request for removing each order
               //--- and set the conditions depending on active buttons
               else
                 {
                  int id=engine.DeleteOrderPending(order.Ticket());
                  if(id>0)
                    {
                     //--- set the pending request activation price and time, as well as activation parameters
                     double price=SymbolInfoDouble(NULL,SYMBOL_ASK);
                     double price_activation=NormalizeDouble(order.PriceOpen()+(distance_pending+distance_pending_request)*g_point,g_digits);
                     ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
                     if(order.TypeByDirection()==ORDER_TYPE_SELL)
                       {
                        price=SymbolInfoDouble(NULL,SYMBOL_BID);
                        price_activation=NormalizeDouble(order.PriceOpen()-(distance_pending+distance_pending_request)*g_point,g_digits);
                        comparer=EQUAL_OR_LESS;
                       }
                     ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
                     SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_DELETE_PENDING,comparer,price,TimeCurrent());
                    }
                 }
              }
           }
        }
               
      //--- If the BUTT_SET_STOP_LOSS button is pressed: Place StopLoss to all orders and positions where it is not present
      if(button==EnumToString(BUTT_SET_STOP_LOSS))
        {
         SetStopLoss();
        }
      //--- If the BUTT_SET_TAKE_PROFIT button is pressed: Place TakeProfit to all orders and positions where it is not present
      if(button==EnumToString(BUTT_SET_TAKE_PROFIT))
        {
         SetTakeProfit();
        }
      //--- If the BUTT_PROFIT_WITHDRAWAL button is pressed: Withdraw funds from the account
      if(button==EnumToString(BUTT_PROFIT_WITHDRAWAL))
        {
         //--- If the program is launched in the tester
         if(MQLInfoInteger(MQL_TESTER))
           {
            //--- Emulate funds withdrawal
            TesterWithdrawal(withdrawal);
           }
        }

      //--- Wait for 1/10 of a second
      Sleep(100);
      //--- "Unpress" the button (if this is neither a trailing button, nor the buttons enabling pending requests)
      if(button!=EnumToString(BUTT_TRAILING_ALL) && StringFind(button,"_PRICE")<0 && StringFind(button,"_TIME")<0)
         ButtonState(button_name,false);
      //--- If the BUTT_TRAILING_ALL button or the buttons enabling pending requests are pressed
      else
        {
         //--- Set the active button color for the button enabling trailing
         if(button==EnumToString(BUTT_TRAILING_ALL))
           {
            ButtonState(button_name,true);
            trailing_on=true;
           }
         
         //--- Buying
         //--- Set the active button color for the button enabling pending requests for opening Buy by price or time
         if(button==EnumToString(BUTT_BUY)+"_PRICE" || button==EnumToString(BUTT_BUY)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_buy=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing BuyLimit by price or time
         if(button==EnumToString(BUTT_BUY_LIMIT)+"_PRICE" || button==EnumToString(BUTT_BUY_LIMIT)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_buy_limit=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing BuyStop by price or time
         if(button==EnumToString(BUTT_BUY_STOP)+"_PRICE" || button==EnumToString(BUTT_BUY_STOP)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_buy_stop=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing BuyStopLimit by price or time
         if(button==EnumToString(BUTT_BUY_STOP_LIMIT)+"_PRICE" || button==EnumToString(BUTT_BUY_STOP_LIMIT)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_buy_stoplimit=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing Buy by price or time
         if(button==EnumToString(BUTT_CLOSE_BUY)+"_PRICE" || button==EnumToString(BUTT_CLOSE_BUY)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_buy=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing 1/2 Buy by price or time
         if(button==EnumToString(BUTT_CLOSE_BUY2)+"_PRICE" || button==EnumToString(BUTT_CLOSE_BUY2)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_buy2=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing Buy by an opposite Sell by price or time
         if(button==EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_PRICE" || button==EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_buy_by_sell=true;
           }
         
         //--- Selling
         //--- Set the active button color for the button enabling pending requests for opening Sell by price or time
         if(button==EnumToString(BUTT_SELL)+"_PRICE" || button==EnumToString(BUTT_SELL)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_sell=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing SellLimit by price or time
         if(button==EnumToString(BUTT_SELL_LIMIT)+"_PRICE" || button==EnumToString(BUTT_SELL_LIMIT)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_sell_limit=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing SellStop by price or time
         if(button==EnumToString(BUTT_SELL_STOP)+"_PRICE" || button==EnumToString(BUTT_SELL_STOP)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_sell_stop=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing SellStopLimit by price or time
         if(button==EnumToString(BUTT_SELL_STOP_LIMIT)+"_PRICE" || button==EnumToString(BUTT_SELL_STOP_LIMIT)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_sell_stoplimit=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing Sell by price or time
         if(button==EnumToString(BUTT_CLOSE_SELL)+"_PRICE" || button==EnumToString(BUTT_CLOSE_SELL)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_sell=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing 1/2 Sell by price or time
         if(button==EnumToString(BUTT_CLOSE_SELL2)+"_PRICE" || button==EnumToString(BUTT_CLOSE_SELL2)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_sell2=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing Sell by an opposite Buy by price or time
         if(button==EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_PRICE" || button==EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_sell_by_buy=true;
           }
         //--- Set the active button color for the button enabling pending requests for removing orders by price or time
         if(button==EnumToString(BUTT_DELETE_PENDING)+"_PRICE" || button==EnumToString(BUTT_DELETE_PENDING)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_delete_all=true;
           }
         //--- Set the active button color for the button enabling pending requests for closing positions by price or time
         if(button==EnumToString(BUTT_CLOSE_ALL)+"_PRICE" || button==EnumToString(BUTT_CLOSE_ALL)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_close_all=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing StopLoss by price or time
         if(button==EnumToString(BUTT_SET_STOP_LOSS)+"_PRICE" || button==EnumToString(BUTT_SET_STOP_LOSS)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_sl=true;
           }
         //--- Set the active button color for the button enabling pending requests for placing TakeProfit by price or time
         if(button==EnumToString(BUTT_SET_TAKE_PROFIT)+"_PRICE" || button==EnumToString(BUTT_SET_TAKE_PROFIT)+"_TIME")
           {
            ButtonState(button_name,true);
            pressed_pending_tp=true;
           }
        }
      //--- re-draw the chart
      ChartRedraw();
     }
   //--- Return a color for the inactive buttons
   else 
     {
      //--- trailing button
      if(button==EnumToString(BUTT_TRAILING_ALL))
        {
         ButtonState(button_name,false);
         trailing_on=false;
        }
      
      //--- Buying
      //--- the button enabling pending requests for opening Buy by price
      if(button==EnumToString(BUTT_BUY)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY)+"_TIME"));
        }
      //--- the button enabling pending requests for opening Buy by time
      if(button==EnumToString(BUTT_BUY)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing BuyLimit by price
      if(button==EnumToString(BUTT_BUY_LIMIT)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_limit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_LIMIT)+"_TIME"));
        }
      //--- the button enabling pending requests for placing BuyLimit by time
      if(button==EnumToString(BUTT_BUY_LIMIT)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_limit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_LIMIT)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing BuyStop by price
      if(button==EnumToString(BUTT_BUY_STOP)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_stop=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_STOP)+"_TIME"));
        }
      //--- the button enabling pending requests for placing BuyStop by time
      if(button==EnumToString(BUTT_BUY_STOP)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_stop=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_STOP)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing BuyStopLimit by price
      if(button==EnumToString(BUTT_BUY_STOP_LIMIT)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_stoplimit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_STOP_LIMIT)+"_TIME"));
        }
      //--- the button enabling pending requests for placing BuyStopLimit by time
      if(button==EnumToString(BUTT_BUY_STOP_LIMIT)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_buy_stoplimit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_BUY_STOP_LIMIT)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing Buy by price
      if(button==EnumToString(BUTT_CLOSE_BUY)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY)+"_TIME"));
        }
      //--- the button enabling pending requests for closing Buy by time
      if(button==EnumToString(BUTT_CLOSE_BUY)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing 1/2 Buy by price
      if(button==EnumToString(BUTT_CLOSE_BUY2)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy2=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY2)+"_TIME"));
        }
      //--- the button enabling pending requests for closing 1/2 Buy by time
      if(button==EnumToString(BUTT_CLOSE_BUY2)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy2=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY2)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing Buy by an opposite Sell by price
      if(button==EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy_by_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_TIME"));
        }
      //--- the button enabling pending requests for closing Buy by an opposite Sell by time
      if(button==EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_buy_by_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_BUY_BY_SELL)+"_PRICE"));
        }

      //--- Selling
      //--- the button enabling pending requests for opening Sell by price
      if(button==EnumToString(BUTT_SELL)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL)+"_TIME"));
        }
      //--- the button enabling pending requests for opening Sell by time
      if(button==EnumToString(BUTT_SELL)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing SellLimit by price
      if(button==EnumToString(BUTT_SELL_LIMIT)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_limit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_LIMIT)+"_TIME"));
        }
      //--- the button enabling pending requests for placing SellLimit by time
      if(button==EnumToString(BUTT_SELL_LIMIT)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_limit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_LIMIT)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing SellStop by price
      if(button==EnumToString(BUTT_SELL_STOP)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_stop=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_STOP)+"_TIME"));
        }
      //--- the button enabling pending requests for placing SellStop by time
      if(button==EnumToString(BUTT_SELL_STOP)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_stop=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_STOP)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing SellStopLimit by price
      if(button==EnumToString(BUTT_SELL_STOP_LIMIT)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_stoplimit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_STOP_LIMIT)+"_TIME"));
        }
      //--- the button enabling pending requests for placing SellStopLimit by time
      if(button==EnumToString(BUTT_SELL_STOP_LIMIT)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_sell_stoplimit=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SELL_STOP_LIMIT)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing Sell by price
      if(button==EnumToString(BUTT_CLOSE_SELL)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL)+"_TIME"));
        }
      //--- the button enabling pending requests for closing Sell by time
      if(button==EnumToString(BUTT_CLOSE_SELL)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing 1/2 Sell by price
      if(button==EnumToString(BUTT_CLOSE_SELL2)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell2=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL2)+"_TIME"));
        }
      //--- the button enabling pending requests for closing 1/2 Sell by time
      if(button==EnumToString(BUTT_CLOSE_SELL2)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell2=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL2)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing Sell by an opposite Buy by price
      if(button==EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell_by_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_TIME"));
        }
      //--- the button enabling pending requests for closing Sell by an opposite Buy by time
      if(button==EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_sell_by_buy=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_SELL_BY_BUY)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for removing orders by price
      if(button==EnumToString(BUTT_DELETE_PENDING)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_delete_all=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_DELETE_PENDING)+"_TIME"));
        }
      //--- the button enabling pending requests for removing orders by time
      if(button==EnumToString(BUTT_DELETE_PENDING)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_delete_all=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_DELETE_PENDING)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for closing positions by price
      if(button==EnumToString(BUTT_CLOSE_ALL)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_close_all=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_ALL)+"_TIME"));
        }
      //--- the button enabling pending requests for closing positions by time
      if(button==EnumToString(BUTT_CLOSE_ALL)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_close_all=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_CLOSE_ALL)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing StopLoss by price
      if(button==EnumToString(BUTT_SET_STOP_LOSS)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_sl=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SET_STOP_LOSS)+"_TIME"));
        }
      //--- the button enabling pending requests for placing StopLoss by time
      if(button==EnumToString(BUTT_SET_STOP_LOSS)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_sl=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SET_STOP_LOSS)+"_PRICE"));
        }
      
      //--- the button enabling pending requests for placing TakeProfit by price
      if(button==EnumToString(BUTT_SET_TAKE_PROFIT)+"_PRICE")
        {
         ButtonState(button_name,false);
         pressed_pending_tp=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SET_TAKE_PROFIT)+"_TIME"));
        }
      //--- the button enabling pending requests for placing TakeProfit by time
      if(button==EnumToString(BUTT_SET_TAKE_PROFIT)+"_TIME")
        {
         ButtonState(button_name,false);
         pressed_pending_tp=(ButtonState(button_name) | ButtonState(prefix+EnumToString(BUTT_SET_TAKE_PROFIT)+"_PRICE"));
        }
      //--- re-draw the chart
      ChartRedraw();
     }
  }
//+------------------------------------------------------------------+

Nas funções de definição de Stoploss e TakeProfit de todas as ordens/posições também adicionamos blocos de código de criação de solicitações pendentes para colocar StopLoss/TakeProfit:

//+------------------------------------------------------------------+
//| Set StopLoss to all orders and positions                         |
//+------------------------------------------------------------------+
void SetStopLoss(void)
  {
   if(stoploss_to_modify==0)
      return;
//--- Set StopLoss to all positions where it is absent
   //--- Get the list of all positions
   CArrayObj* list=engine.GetListMarketPosition();
   //--- Select only current symbol positions from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
   //--- select positions with zero StopLoss from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SL,0,EQUAL);
   if(list==NULL)
      return;
   int total=list.Total();
   for(int i=total-1;i>=0;i--)
     {
      COrder* position=list.At(i);
      if(position==NULL)
         continue;
      double sl=CorrectStopLoss(position.Symbol(),position.TypeByDirection(),0,stoploss_to_modify);
      //--- If the pending request creation buttons are not pressed, set StopLoss for each position by its ticket
      if(!pressed_pending_sl)
         engine.ModifyPosition((ulong)position.Ticket(),sl,-1);
      //--- Otherwise, create a pending request for setting StopLoss for each position
      //--- and set the conditions depending on active buttons
      else
        {
         int id=engine.ModifyPositionPending(position.Ticket(),sl,-1);
         if(id>0)
           {
            //--- set the pending request activation price and time, as well as activation parameters
            double price=SymbolInfoDouble(NULL,SYMBOL_BID);
            double price_activation=NormalizeDouble(position.PriceOpen()+distance_pending_request*g_point,g_digits);
            ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
            if(position.TypeByDirection()==ORDER_TYPE_SELL)
              {
               price=SymbolInfoDouble(NULL,SYMBOL_ASK);
               price_activation=NormalizeDouble(position.PriceOpen()-distance_pending_request*g_point,g_digits);
               comparer=EQUAL_OR_LESS;
              }
            ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
            SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SET_STOP_LOSS,comparer,price,TimeCurrent());
           }
        }
     }
//--- Set StopLoss to all pending orders where it is absent
   //--- Get the list of all orders
   list=engine.GetListMarketPendings();
   //--- Select only current symbol positions from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
   //--- select orders with zero StopLoss from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SL,0,EQUAL);
   if(list==NULL)
      return;
   total=list.Total();
   for(int i=total-1;i>=0;i--)
     {
      COrder* order=list.At(i);
      if(order==NULL)
         continue;
      double sl=CorrectStopLoss(order.Symbol(),(ENUM_ORDER_TYPE)order.TypeOrder(),order.PriceOpen(),stoploss_to_modify);
      //--- If the pending request creation buttons are not pressed, set StopLoss for each order by its ticket
      if(!pressed_pending_sl)
         engine.ModifyOrder((ulong)order.Ticket(),-1,sl,-1,-1);
      //--- Otherwise, create a pending request for setting StopLoss for each order
      //--- and set the conditions depending on active buttons
      else
        {
         int id=engine.ModifyOrderPending(order.Ticket(),-1,sl,-1,-1);
         if(id>0)
           {
            //--- set the pending request activation price and time, as well as activation parameters
            double price=SymbolInfoDouble(NULL,SYMBOL_ASK);
            double price_activation=NormalizeDouble(order.PriceOpen()+(distance_pending+distance_pending_request)*g_point,g_digits);
            ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
            if(order.TypeByDirection()==ORDER_TYPE_SELL)
              {
               price=SymbolInfoDouble(NULL,SYMBOL_BID);
               price_activation=NormalizeDouble(order.PriceOpen()-(distance_pending+distance_pending_request)*g_point,g_digits);
               comparer=EQUAL_OR_LESS;
              }
            ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
            SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SET_STOP_LOSS,comparer,price,TimeCurrent());
           }
        }
     }
  }
//+------------------------------------------------------------------+
//| Set TakeProfit to all orders and positions                       |
//+------------------------------------------------------------------+
void SetTakeProfit(void)
  {
   if(takeprofit_to_modify==0)
      return;
//--- Set TakeProfit to all positions where it is absent
   //--- Get the list of all positions
   CArrayObj* list=engine.GetListMarketPosition();
   //--- Select only current symbol positions from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
   //--- select positions with zero TakeProfit from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_TP,0,EQUAL);
   if(list==NULL)
      return;
   int total=list.Total();
   for(int i=total-1;i>=0;i--)
     {
      COrder* position=list.At(i);
      if(position==NULL)
         continue;
      double tp=CorrectTakeProfit(position.Symbol(),position.TypeByDirection(),0,takeprofit_to_modify);
      //--- If the pending request creation buttons are not pressed, set TakeProfit for each position by its ticket
      if(!pressed_pending_tp)
         engine.ModifyPosition((ulong)position.Ticket(),-1,tp);
      //--- Otherwise, create a pending request for setting TakeProfit for each position
      //--- and set the conditions depending on active buttons
      else
        {
         int id=engine.ModifyPositionPending(position.Ticket(),-1,tp);
         if(id>0)
           {
            //--- set the pending request activation price and time, as well as activation parameters
            double price=SymbolInfoDouble(NULL,SYMBOL_BID);
            double price_activation=NormalizeDouble(position.PriceOpen()+distance_pending_request*g_point,g_digits);
            ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
            if(position.TypeByDirection()==ORDER_TYPE_SELL)
              {
               price=SymbolInfoDouble(NULL,SYMBOL_ASK);
               price_activation=NormalizeDouble(position.PriceOpen()-distance_pending_request*g_point,g_digits);
               comparer=EQUAL_OR_LESS;
              }
            ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
            SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SET_TAKE_PROFIT,comparer,price,TimeCurrent());
           }
        }
     }
//--- Set TakeProfit to all pending orders where it is absent
   //--- Get the list of all orders
   list=engine.GetListMarketPendings();
   //--- Select only current symbol orders from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_SYMBOL,Symbol(),EQUAL);
   //--- select orders with zero TakeProfit from the list
   list=CSelect::ByOrderProperty(list,ORDER_PROP_TP,0,EQUAL);
   if(list==NULL)
      return;
   total=list.Total();
   for(int i=total-1;i>=0;i--)
     {
      COrder* order=list.At(i);
      if(order==NULL)
         continue;
      double tp=CorrectTakeProfit(order.Symbol(),(ENUM_ORDER_TYPE)order.TypeOrder(),order.PriceOpen(),takeprofit_to_modify);
      //--- If the pending request creation buttons are not pressed, set TakeProfit for each order by its ticket
      if(!pressed_pending_sl)
         engine.ModifyOrder((ulong)order.Ticket(),-1,-1,tp,-1);
      //--- Otherwise, create a pending request for setting TakeProfit for each order
      //--- and set the conditions depending on active buttons
      else
        {
         int id=engine.ModifyOrderPending(order.Ticket(),-1,-1,tp,-1);
         if(id>0)
           {
            //--- set the pending request activation price and time, as well as activation parameters
            double price=SymbolInfoDouble(NULL,SYMBOL_ASK);
            double price_activation=NormalizeDouble(order.PriceOpen()+(distance_pending+distance_pending_request)*g_point,g_digits);
            ENUM_COMPARER_TYPE comparer=EQUAL_OR_MORE;
            if(order.TypeByDirection()==ORDER_TYPE_SELL)
              {
               price=SymbolInfoDouble(NULL,SYMBOL_BID);
               price_activation=NormalizeDouble(order.PriceOpen()-(distance_pending+distance_pending_request)*g_point,g_digits);
               comparer=EQUAL_OR_LESS;
              }
            ulong  time_activation=TimeCurrent()+bars_delay_pending_request*PeriodSeconds();
            SetPReqCriterion((uchar)id,price_activation,time_activation,BUTT_SET_TAKE_PROFIT,comparer,price,TimeCurrent());
           }
        }
     }
  }
//+------------------------------------------------------------------+

A lógica dos blocos de código para criar solicitações pendentes em todas as funções examinadas é a mesma, além disso, é comentada em detalhes, portanto, nós os deixaremos para estudá-los por conta própria. De qualquer forma, se algo não estiver claro, você sempre poderá tirar suas dúvidas na discussão do artigo.

Compilamos o EA e o executamos no modo visual do testador. Para verificar a remoção de ordens e a modificação de ordens/posições, primeiro abrimos duas posições de venda e definimos uma ordem de venda pendente sem StopLoss e TakeProfit. Em seguida, criamos solicitações pendentes para modificar os níveis de stop de ordens e posições de acordo com a condição do valor do preço. Aguardamos a ativação das solicitações pendentes e a colocação dos níveis de stop especificados, e excluímos ordens e posições.

Em seguida, abrimos duas posições para a compra e definimos uma ordem pendente de compra. Depois disso, criamos solicitações pendentes para excluir ordens e fechar posições de acordo como o tempo.


Como se pode ver, as ordens de stop foram colocadas na interseção do nível de preço definido para ativar solicitações pendentes, as posições foram fechadas após o tempo especificado e a ordem foi excluída.

Gostaria de salientar que nem tudo está funcionando bem até agora, há problemas com a criação simultânea de várias solicitações pendentes para o mesmo ticket, essas solicitações nem sempre funcionam corretamente. Em outras palavras, no momento, a lógica funciona corretamente apenas se houver uma solicitação pendente para cada posição ou ordem. Depois que a solicitação pendente for acionada, executada e excluída, será possível novamente criar uma nova solicitação pendente para esta posição ou ordem (se elas permanecerem no mercado).

Vamos resolver esse problema, gradualmente, juntamente com a criação de mais funcionalidades da biblioteca e, provavelmente, já com alguns objetos da biblioteca gráficas.

O que vem agora?

No próximo artigo, começaremos a criar a funcionalidade de uma biblioteca para armazenar, processar e receber dados de preços. 

Abaixo estão anexados todos os arquivos da versão atual da biblioteca e os arquivos do EA de teste. Você pode baixá-los e testar tudo sozinho.
Se você tiver perguntas, comentários e sugestões, poderá expressá-los nos comentários do artigo.

Complementos

Artigos desta série:

Parte 1. Conceito, gerenciamento de dados e primeiros resultados
Parte 2. Coleção do histórico de ordens e negócios
Parte 3. Coleção de ordens e posições de mercado, busca e ordenação
Parte 4. Eventos de Negociação. Conceito
Parte 5. Classes e coleções de eventos de negociação. Envio de eventos para o programa
Parte 6. Eventos da conta netting
Parte 7. Eventos de ativação da ordem stoplimit, preparação da funcionalidade para os eventos de modificação de ordens e posições
Parte 8. Eventos de modificação de ordens e posições
Parte 9. Compatibilidade com a MQL4 — preparação dos dados
Parte 10. Compatibilidade com a MQL4 — eventos de abertura de posição e ativação de ordens pendentes
Parte 11. Compatibilidade com a MQL4 — eventos de encerramento de posição
Parte 12. Implementação da classe de objeto "conta" e da coleção de objetos da conta
Parte 13. Eventos do objeto conta
Parte 14. O objeto símbolo
Parte 15. Coleção de objetos-símbolos
Parte 16. Eventos de coleção de símbolos
Parte 17. Interatividade de objetos de biblioteca
Parte 18. Interatividade do objeto-conta e quaisquer de outros objetos da biblioteca
Parte 19. Classe de mensagens de biblioteca
Parte 20. Criação e armazenamento de recursos de programas
Parte 21 Classes de negociação - objeto base de negociação multiplataforma
Parte 22. Classes de negociação - classe básica de negociação, controle de restrições
Parte 23. Classes de negociação - classe básica de negociação, controle de parâmetros válidos
Parte 24. Classes de negociação - classe básica de negociação, correção automática de parâmetros errados
Parte 25. Classes de negociação - classe básica de negociação, processamento de erros retornados pelo servidor de negociação
Parte 26. Trabalho com ordens pendentes, primeira implementação (abertura de posições)
Parte 27. Trabalho com ordens pendentes, posicionamento de ordens pendentes Parte 28. Trabalho com ordens pendentes de negociação - fechamento, exclusão, modificações
Parte 29. Trabalho com ordens de negociação pendentes, classes de objetos-ordens
Parte 30. Trabalho com ordens de negociação pendentes, gerenciamento de objetos-ordens
Parte 31. Trabalho com ordens de negociação pendentes, abertura de posições por condições
Parte 32. Trabalho com ordens de negociação pendentes, posicionando ordens pendentes por condições
Parte 33. Trabalho com ordens de negociação pendentes, fechamento (parcial, total, usando uma oposta) de posições por condições


Traduzido do russo pela MetaQuotes Software Corp.
Artigo original: https://www.mql5.com/ru/articles/7569

Arquivos anexados |
MQL5.zip (3666.8 KB)
MQL4.zip (3666.79 KB)
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A MetaTrader 5 recebeu algumas funções de rede recentemente. Isso abriu grandes oportunidades para os programadores que desenvolvem produtos para o Mercado. Agora eles podem implementar coisas que antes exigiam bibliotecas dinâmicas. Neste artigo, nós vamos considerá-los usando a implementação do MySQL como exemplo.

Trabalhando com as funções de rede ou MySQL sem DLL: Parte II - Programa para monitorar as alterações nas propriedades do sinal Trabalhando com as funções de rede ou MySQL sem DLL: Parte II - Programa para monitorar as alterações nas propriedades do sinal

Na parte anterior, nós consideramos a implementação do conector MySQL. Neste artigo, nós consideraremos sua aplicação implementando o serviço para coletar as propriedades do sinal e o programa para visualizar suas alterações ao longo do tempo. O exemplo implementado tem sentido prático se os usuários precisarem observar alterações nas propriedades que não são exibidas na página da web do sinal.