EA code to close opposite positions

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Vladimir Karputov  
Nelson Wanyama :
Hello everyone. I started learning mql5 just last week, I've come a long way though. However, I'm having trouble writing codes to close buy orders when sell signal is received, and vice versa. Is anyone kind enough to help me out?

Example: code "Puria method 2", input parameter "Close opposite" -> variable InpCloseOpposite.

Kang Feng  
Nelson Wanyama:
Hello everyone. I started learning mql5 just last week, I've come a long way though. However, I'm having trouble writing codes to close buy orders when sell signal is received, and vice versa. Is anyone kind enough to help me out?

ClosePositions() function:

it's fully functional, you can use it directly.

for the actual operation results confirmation, you need to check the OnTradeTransaction() or OnTrade() event handler.

//+------------------------------------------------------------------+

input int MaxAcceptableSlippagePoints;

//Global Variables
int      Magic = 1234;
double   Ask=0,Bid=0;
MqlTick  NewTick;
ENUM_ORDER_TYPE_FILLING MarketFillingType;
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OnInit()
  {
   Print("SYMBOL_FILLING_FOK: ",(bool)((int)(SymbolInfoInteger(_Symbol,SYMBOL_FILLING_MODE)&1)==1),"    SYMBOL_FILLING_IOC: ",(bool)((int)(SymbolInfoInteger(_Symbol,SYMBOL_FILLING_MODE)&2)==2));

   MarketFillingType=ORDER_FILLING_RETURN;
   if(SymbolInfoInteger(_Symbol,SYMBOL_FILLING_MODE)==SYMBOL_FILLING_FOK)
      MarketFillingType=ORDER_FILLING_FOK;
   else
      if(SymbolInfoInteger(_Symbol,SYMBOL_FILLING_MODE)==SYMBOL_FILLING_IOC)
         MarketFillingType=ORDER_FILLING_IOC;

  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OnTick()
  {

   if ( ClosePositions(0) ) Print("All Positions Closed."); //Any value other than 1 and -1 to close All Positions
//or:
   if ( ClosePositions(1) ) Print("All Buy Positions Closed.");
//or:
   if ( ClosePositions(-1) ) Print("All Sell Positions Closed.");

  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
bool ClosePositions(char type)
  {

   if(!AccountInfoInteger(ACCOUNT_TRADE_ALLOWED))
     {
      Print("error: Trading is forbidden !");
      return(false);
     }
   if(!TerminalInfoInteger(TERMINAL_CONNECTED))
     {
      Print("error: Connection to trade server lost !");
      return(false);
     }

   MqlTradeRequest TradeRequest;
   MqlTradeResult TradeResult;

   bool success=false;
   int failed=0;

   ENUM_POSITION_TYPE positiontype;
   long positionticket;
   double positionvolume;

   if(SymbolInfoTick(_Symbol,NewTick))
     {
      Ask=NewTick.ask;
      Bid=NewTick.bid;
     }

   int currentpositions=PositionsTotal();
   for(int i=currentpositions-1; i>=0; i--)
     {
      positionticket=(long)PositionGetTicket(i);
      if(PositionGetString(POSITION_SYMBOL)!=_Symbol || PositionGetInteger(POSITION_MAGIC)!=Magic)
         continue;
      positionvolume=PositionGetDouble(POSITION_VOLUME);
      positiontype=(ENUM_POSITION_TYPE)PositionGetInteger(POSITION_TYPE);
      ZeroMemory(TradeRequest);
      ZeroMemory(TradeResult);
      TradeRequest.action=TRADE_ACTION_DEAL;
      TradeRequest.magic=Magic;
      TradeRequest.symbol=_Symbol;
      TradeRequest.position=positionticket;
      TradeRequest.volume=positionvolume;
      TradeRequest.type_filling=MarketFillingType;
      TradeRequest.comment=IntegerToString(Magic);
      if(positiontype==POSITION_TYPE_BUY)
        {
         if(type==-1)
            continue;
         else
            TradeRequest.type=ORDER_TYPE_SELL;
        }
      if(positiontype==POSITION_TYPE_SELL)
        {
         if(type==1)
            continue;
         else
            TradeRequest.type=ORDER_TYPE_BUY;
        }
      if((ENUM_SYMBOL_TRADE_EXECUTION)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_EXEMODE)==SYMBOL_TRADE_EXECUTION_REQUEST || (ENUM_SYMBOL_TRADE_EXECUTION)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_EXEMODE)==SYMBOL_TRADE_EXECUTION_INSTANT)
        {
         TradeRequest.deviation=MaxAcceptableSlippagePoints;
         if(positiontype==POSITION_TYPE_BUY)
            TradeRequest.price=NormalizeDouble(Bid,_Digits);
         if(positiontype==POSITION_TYPE_SELL)
            TradeRequest.price=NormalizeDouble(Ask,_Digits);
        }
      ResetLastError();
      success=OrderSend(TradeRequest,TradeResult);
      if(!success)
         failed++;
     }

   if(failed==0)
      return(true);

   return(false);
  }

//+------------------------------------------------------------------+
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