I'm trying to write a custom function for Autotrade that does not open orders in endless loop - MQL4 and MetaTrader 4

Michail_David 2019.10.17 17:38 #9841

Good afternoon.

Please help. When writing a custom function, the tester gives error 3 and does not open orders. Please specify the errors.

 ticket=OrderSend(Symbol(),OP_SELLSTOP,Lots,Prices_install(),3,0,0,NULL,MAGICNUMBER,0,clrGreen);
               if(ticket>0)//проверка отрытия позиции
                 {
                  if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES))
                     Print("SELL ордер открыт:",OrderOpenPrice());
                 }
               else
                  Print("Ошибка открытия ордера SELL:",GetLastError());
              }
            return;
           }
        }
 //+---------------------------------------------------------------------------+
      //|                     Условия модификации ордеров                           |
      //+---------------------------------------------------------------------------+

      if(ticket>0)
        {
         if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES))
           {
            //--- длинная позиция открыта
            switch(OrderType())
              {
               case OP_BUYSTOP:
                  if(NormalizeDouble(OrderOpenPrice()-Prices_install(),Digits)>0 && NormalizeDouble(Prices_install()-Bid,Digits)>0)
                    {
                     if(OrderModify(ticket,Prices_install(),0,0,0,clrBlue))
                        Print("Цена Price_BUY ордера успешно модифицирована.");
                     else
                        Print("Ошибка модификации ордера BUYStop. Код ошибки=",GetLastError());
                    }
                  else
                     Print("Цена модификации выше цены ордера");
                  break;
               case OP_SELLSTOP:
                  if(NormalizeDouble(Prices_install()-OrderOpenPrice(),Digits)>0 && NormalizeDouble(Ask-Prices_install(),Digits)>0)
                    {
                     if(OrderModify(ticket,Prices_install(),0,0,0,clrGreen))
                        Print("Цена Price_SELL ордера успешно модифицирована.");
                     else
                        Print("Ошибка модификации ордера SELLStop. Код ошибки=",GetLastError());
                    }
                  else
                     Print("Цена модификации выше цены ордера");
                  break;
               case OP_BUY:
                  if(NormalizeDouble(StopLosse_install()-OrderStopLoss(),Digits)>0 && NormalizeDouble(Ask-StopLosse_install(),Digits)>0)
                    {
                     if(OrderModify(ticket,OrderOpenPrice(),StopLosse_install(),0,0,clrBlue))
                        Print("Цена Price_BUY ордера успешно модифицирована.");
                     else
                        Print("Ошибка модификации ордера BUY. Код ошибки=",GetLastError());
                    }
                  else
                     Print("Цена модификации выше цены ордера");
                  break;
               case OP_SELL:
                  if(NormalizeDouble(OrderStopLoss()-StopLosse_install(),Digits)>0 && NormalizeDouble(StopLosse_install()-Bid,Digits)>0)
                    {
                     if(OrderModify(ticket,OrderOpenPrice(),StopLosse_install(),0,0,clrGreen))
                        Print("Цена Price_SELL ордера успешно модифицирована.");
                     else
                        Print("Ошибка модификации ордера SELL. Код ошибки=",GetLastError());
                    }
                  else
                     Print("Цена модификации выше цены ордера");
                  break;
              }
           }
        }
      Sleep(5);
     }
   return;
  }
//+------------------------------------------------------------------+
double StopLosse_install()
  {
   double StopLoss=iSAR(NULL,PERIODs_short_term,Step,Maximum,1);
   double StopLoss_install;
   int StopLevel=(int)MarketInfo(Symbol(),MODE_STOPLEVEL); // Минимально допустимый уровень стоп-лосса/тейк-профита в пунктах
   int FreezeLevel=(int)MarketInfo(Symbol(),MODE_FREEZELEVEL);//Уровень заморозки ордеров в пунктах
   switch(OrderType())
     {
      case 0:
         if(Bid-StopLoss>FreezeLevel)
           {
            if(Bid-StopLoss>=StopLevel)
               StopLoss_install=NormalizeDouble(StopLoss,Digits);
            if(Bid-StopLoss<StopLevel)
               StopLoss_install=NormalizeDouble(StopLoss-StopLevel*MarketInfo(Symbol(),MODE_DIGITS),Digits);
           }
         else
            Print("Цена открытия ордера находится в дистанции заморозки:",GetLastError());
         break;
      case 1:
         if(StopLoss-Ask>FreezeLevel)
           {
            if(StopLoss-Ask>=StopLevel)
               StopLoss_install=NormalizeDouble(StopLoss,Digits);
            if(StopLoss-Ask<StopLevel)
               StopLoss_install=NormalizeDouble(StopLoss+StopLevel*MarketInfo(Symbol(),MODE_DIGITS),Digits);
           }
         else
            Print("Цена открытия ордера находится в дистанции заморозки:",GetLastError());
         break;
     }
     return(StopLoss_install);
  }
//+------------------------------------------------------------------+
double Prices_install()
  {
   double Price=iSAR(NULL,PERIODs_short_term,Step,Maximum,1);
   double Price_install;
   int StopLevel=(int)MarketInfo(Symbol(),MODE_STOPLEVEL); // Минимально допустимый уровень стоп-лосса/тейк-профита в пунктах
   int FreezeLevel=(int)MarketInfo(Symbol(),MODE_FREEZELEVEL);//Уровень заморозки ордеров в пунктах
   switch(OrderType())
     {
      case 4:
         if(Price-Ask>FreezeLevel)
           {
            if(Price - Ask>=StopLevel)
               Price_install=NormalizeDouble(Price,Digits);
            if(Price - Ask<StopLevel)
               Price_install=NormalizeDouble(Price+StopLevel*MarketInfo(Symbol(),MODE_DIGITS),Digits);
           }
         else
            Print("Цена открытия ордера находится в дистанции заморозки:",GetLastError());
         break;
      case 5:
         if(Bid-Price>FreezeLevel)
           {
            if(Bid-Price>=StopLevel)
               Price_install=NormalizeDouble(Price,Digits);
            if(Bid-Price<StopLevel)
               Price_install=NormalizeDouble(Price+StopLevel*MarketInfo(Symbol(),MODE_DIGITS),Digits);
           }
         else
            Print("Цена открытия ордера находится в дистанции заморозки:",GetLastError());
         break;
     }
     return(Price_install);
  }
//+------------------------------------------------------------------+

Igor Makanu 2019.10.17 17:56 #9842

Ivan Butko:

Strange, if in one EA, it opens trades one after the other for each specified currency pair... With a time lag. And when you put it on 5 different charts with different currency pair (symbol(0)), all 5 trades open simultaneously and instantly when you press autotrade.

Can you suggest what it may be and how to fix it? To have everything in one EA and on one chart (so that the button on the chart opens all pairs as fast as when activating "autotrade" with several EAs, as in the original version)

here in general is the problem.... you and i are doing our best to suspend the terminal, imho.... i don't like wrong logic to write, here i have done as you want - threw the EA on the chart, pressed the button and it will try to open an order in an endless loop

#property copyright "IgorM"
#property link      "https://www.mql5.com/ru/users/igorm"
#property version   "1.00"
#property strict
input string   sym1 = "EURUSD";
input double   lot1 = 0.01;
input string   sym2 = "GBPUSD";
input double   lot2 = 0.01;
input string   sym3 = "USDCAD";
input double   lot3 = 0.01;
input string   sym4 = "USDJPY";
input double   lot4 = 0.01;
input string   sym5 = "AUDUSD";
input double   lot5 = 0.01;
#include <Controls\Button.mqh>
CButton ButtonSend;

string sym[5];
double lot[5];
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+

int OnInit()
  {
   sym[0] = sym1;
   sym[1] = sym2;
   sym[2] = sym3;
   sym[3] = sym4;
   sym[4] = sym5;
   lot[0] = lot1;
   lot[1] = lot2;
   lot[2] = lot3;
   lot[3] = lot4;
   lot[4] = lot5;
   ButtonSend.Create(0, "ButtonSend" + _Symbol, 0, 10, 50, 100, 90);
   ButtonSend.Color(clrRed);
   ButtonSend.Text("Kill Forex!");
   OnTick();
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   static int ticket[5] = {-1, -1, -1, -1, -1 };
   if(ticket[0] > 0 && ticket[1] > 0 && ticket[2] > 0 && ticket[3] > 0 && ticket[4] > 0)
   {
    ButtonSend.Text("EA Stop");
    return;
    }
   while(!IsStopped())
   {
   if(ButtonSend.Pressed())
     {
      ButtonSend.Text("Sending...");
         if(TerminalInfoInteger(TERMINAL_CONNECTED) && TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) && !IsTradeContextBusy())
           {
            RefreshRates();
            for(int i = 0; i < 5; i++)
              {
               if(sym[i] == "") ticket[i] = INT_MAX;
               if(ticket[i] > 0) continue;
               double vol = NormalizeLot(lot[i],sym[i]);
               ticket[i] = OrderSend(sym[i], OP_SELL, vol, SymbolInfoDouble(sym[i],SYMBOL_BID), 3, 0, 0, "", 0, 0, clrRed);
              }
           }
        }
     if(ticket[0] > 0 && ticket[1] > 0 && ticket[2] > 0 && ticket[3] > 0 && ticket[4] > 0) break;        
     ChartRedraw();      
     Sleep(123);
     }
  }
//+------------------------------------------------------------------+
double NormalizeLot(const double value,const string sym_,bool up=false)
  {
   double res,sizetable[9]={1.0,0.1,0.01,0.001,0.0001,0.00001,0.000001,0.0000001,0.00000001};
   double lotStep=SymbolInfoDouble(sym_,  SYMBOL_VOLUME_STEP);
   int lotdigits;
   for(lotdigits=8; lotdigits>=0; lotdigits--) if(lotStep<=sizetable[lotdigits]) break;
   if(up) res=NormalizeDouble(MathCeil(MathMin(MathMax(value,SymbolInfoDouble(sym_,SYMBOL_VOLUME_MIN)),SymbolInfoDouble(sym_,SYMBOL_VOLUME_MAX))/lotStep)*lotStep,lotdigits);
   else res=NormalizeDouble(MathFloor(MathMin(MathMax(value,SymbolInfoDouble(sym_,SYMBOL_VOLUME_MIN)),SymbolInfoDouble(sym_,SYMBOL_VOLUME_MAX))/lotStep)*lotStep,lotdigits);
   return(res);
  }
//+------------------------------------------------------------------+

Any rookie question, so Last OrderType Machine learning in trading:

Ivan Butko 2019.10.17 20:49 #9843

Igor Makanu:

here in general is the problem.... you and i are doing our best to suspend the terminal, imho.... i don't like to write the wrong logic, here i have done as you want - throw the EA on the chart, press the button and it will try to open an order in an endless loop

Igor, thanks for the extended functionality! Unfortunately, nothing has changed in terms of speed. My trades are also opening one after another. I tried again to put minimal version on each chart and pressed "autotrade", all deals opened at once and instantly. There is still a slight delay at the beginning.
Despite this, still when you click on the integrated Trade Panel button, a single trade opens even faster, without an initial delay. Weird. We would like to get to a state where a similar button would open a basket without delay.

As far as the execution speed is concerned:
1. The fastest way is to poke the standard Trade Panel.
2. Scatter it over several charts and press "AutoTrade".
3. The button that opens the basket one by one

The fastest way to i need a close VPS not working at

Igor Makanu 2019.10.18 05:08 #9844

Ivan Butko:

The trades are also opened one after the other.

There is no other way, google information on Market Execution/Instant Execution account types

and second pointhttps://www.mql5.com/ru/docs/runtime/running

Expert Advisor - In its own thread, as many EAs as there are execution threads for them

in brief - after an EA sends an order it waits for an order to be confirmed and if there are several EAs on different charts, you get the independence of each EA, i.e. multi-threaded execution of code

I think for your problem, as far as I understand trading the news, the best solution is to open several charts, throw the EAs configured on them, which are looped in an infinite loop and, after placing an order the EA has to leave the chart, start all EAs with the Autotrade button

No ticks in backtest please guy need help Single EA to manage

ponochka 2019.10.18 07:58 #9845

Hi all! How do I get the standard Parabolic indicator in an EA to open a trader when it creates its first point (i.e. changes in market trend) ????

Alexey Viktorov 2019.10.18 09:08 #9846

ponochka:
Hi all! How to make the standard Parabolic indicator in an EA to open a trader on the creation of its first point (i.e. market trend change) ????

At first, the points to which the arrows point were on the opposite side of the current price. And as soon as the price touched that point, it immediately jumped to the other side.

Conclusion: The first point on top will be when the price touches the point on the bottom. And vice versa...

Trade101 multi-currency indicator EURUSD - Trends, Forecasts [WARNING CLOSED!] Any newbie

Ivan Butko 2019.10.18 11:37 #9847

Igor Makanu:

There is no other way, google information on Market Execution/Instant Execution account types

And the second point ishttps://www.mql5.com/ru/docs/runtime/running

In a nutshell, when you send an order the EA waits for an order to be confirmed and if there are a few EAs on different charts, you will get an independent working of each EA, i.e. a multi-threaded execution of the code

I think for your problem, as far as I understand trading the news, the best solution is to open several charts, throw the EAs configured on them, which are looped in an infinite loop and, after placing an order, the EA should leave the chart and start all EAs using the auto-trade button

Wow... thanks for the clarification. I mean. Indeed, only after opening the current one does the next one open. Curious.

Do you know by any chance if you try the fourth scheme - trade copier - the trades will also open sequentially? For example, we give a signal to the copyer that 7 orders seem to be open on the wizard... how will he open them? Or, we should also set up 7 copyers and indicate to each of them to copy their pair. Although, I may try it, I don't have to create anything additionally.

There is also a fifth method - use the clicker. But, it is too expensive, I don't think anyone will write it at the moment. I will try what is available for now.

UPD

I tried copier - same thing, deals opens sequentially. And if I put the copier on 7 charts and set 1ms update, the terminal together with UPD will explode.

That leaves two ways.

1. The active one - to place the Expert Advisor on each chart and enable auto-trading.
2) The unproven - to use third-party software - clicker.

"Teach" the EA !!! entrance point [WARNING CLOSED!] Any newbie

Igor Makanu 2019.10.19 11:37 #9848

Ivan Butko:

1. Actionable - put an EA on each chart and enable auto-trading.

2. Unproven - use third-party software - clicker.

with 99% probability 1 and 2 will work the same speed, the server is still processing your trade requests one by one, and when you send 7 requests from 7 charts, you have won time waiting for answer from server (until the EA receives the ticket, it does nothing - it is waiting)

about the clicker, with WinAPI you can "click" with your mouse on any point of the screen, I checked the code a month agohttps://www.mql5.com/ru/forum/156025#comment_7552799

You want to use auto clicker to send an order, so you can do the same with@Koldun Zloy's code

Questions from Beginners MQL5 Tough communication problems Do brokers see established

Ivan Butko 2019.10.19 12:17 #9849

Igor Makanu:

with 99% probability option 1 and 2 will work the same speed, the server is still processing your trade requests one by one, and when you send 7 requests from 7 charts, you have won time waiting for the response from the server (until the EA receives the ticket, it does nothing - it waits)

about the clicker, with WinAPI you can "click" with your mouse on any point of the screen, I checked the code a month agohttps://www.mql5.com/ru/forum/156025#comment_7552799

You want to use auto clicker to send an order, so you can do the same with @Koldun Zloy's code

Great, I'll check it out. Thank you very much for your help and the work you have done

kopeyka2 2019.10.19 15:26 #9850

Hello.

I am mastering MT5. But it's not clear how to draw the buffer lines. I downloaded indicator from mql5 site and fixed it a little.

But now I have some problems with lines. My question is: Why is the line skewed in history and how to fix it?

//+------------------------------------------------------------------+
//|                                                        Proba.mq5 |
//|                        Copyright 2019, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2019, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property indicator_chart_window
//---- для расчета и отрисовки индикатора использовано пятнадцать буферов
#property indicator_buffers 4
//---- использовано пятнадцать графических построений
#property indicator_plots   4
//+----------------------------------------------+
//|  Параметры отрисовки уровня                  |
//+----------------------------------------------+
//---- отрисовка индикатора в виде значка
#property indicator_type1   DRAW_LINE
//---- в качестве цвета линии индикатора цвет MediumSeaGreen
#property indicator_color1 clrGold
//---- толщина линии индикатора равна
#property indicator_width1  1
//---- отображение метки индикатора
#property indicator_label1  "OPEN"
//+----------------------------------------------+
//|  Параметры отрисовки уровня                  |
//+----------------------------------------------+
//---- отрисовка индикатора в виде значка
#property indicator_type2   DRAW_LINE
//---- в качестве цвета индикатора использован цвет MediumSeaGreen
#property indicator_color2 clrRed
//---- толщина линии индикатора равна
#property indicator_width2  1
//---- отображение лэйбы индикатора
#property indicator_label2  "CLOSE"
//+----------------------------------------------+
//|  Параметры отрисовки уровня                  |
//+----------------------------------------------+
//---- отрисовка индикатора в виде значка
#property indicator_type3   DRAW_LINE
//---- в качестве цвета индикатора использован цвет Lime
#property indicator_color3 clrYellow
//---- толщина линии индикатора равна
#property indicator_width3  2
//---- отображение метки индикатора
#property indicator_label3  "HIGH"
//+----------------------------------------------+
//|  Параметры отрисовки уровня                  |
//+----------------------------------------------+
//---- отрисовка индикатора в виде значка
#property indicator_type4   DRAW_LINE
//---- в качестве цвета индикатора использован цвет MediumSeaGreen
#property indicator_color4 clrYellow
//---- толщина индикатора равна
#property indicator_width4  1
//---- отображение метки индикатора
#property indicator_label4  "LOW"
//+----------------------------------------------+
//| Входные параметры индикатора                 |
//+----------------------------------------------+
input int  ExtHowManyDays=10; //Количество Дней истории
input ENUM_TIMEFRAMES Timeframes = PERIOD_D1; //Период расчетов
//+----------------------------------------------+
//---- объявление динамических массивов, которые в дальнейшем
//---- будут использованы в качестве индикаторных буферов
double BufferLow[],BufferHigh[],BufferClose[],BufferOpen[];
//+------------------------------------------------------------------+
//| iBarShift() function                                             |
//+------------------------------------------------------------------+
int iBarShift(string symbol,ENUM_TIMEFRAMES timeframe,datetime time)
  {
//----
   if(time<0)
      return(-1);
   datetime Arr[],time1;

   time1=(datetime)SeriesInfoInteger(symbol,timeframe,SERIES_LASTBAR_DATE);

   if(CopyTime(symbol,timeframe,time,time1,Arr)>0)
     {
      int size=ArraySize(Arr);
      return(size-1);
     }
   else
      return(-1);
//----
  }
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void OnInit()
  {
//---
   int draw_begin;
   if(ExtHowManyDays < 1)
      draw_begin=0;
   else
      draw_begin=ExtHowManyDays;

//---- превращение динамических массивов в индикаторные буферы
   SetIndexBuffer(0,BufferOpen,INDICATOR_DATA);
   SetIndexBuffer(1,BufferClose,INDICATOR_DATA);
   SetIndexBuffer(2,BufferHigh,INDICATOR_DATA);
   SetIndexBuffer(3,BufferLow,INDICATOR_DATA);
//---- создание метки для отображения в DataWindow
   PlotIndexSetString(0,PLOT_LABEL,"Price OPEEN");
   PlotIndexSetString(1,PLOT_LABEL,"Price CLOSE");
   PlotIndexSetString(2,PLOT_LABEL,"Price HIGH");
   PlotIndexSetString(3,PLOT_LABEL,"Price LOW");
//---- индексация элементов в буферах как в таймсериях
   ArraySetAsSeries(BufferOpen,true);
   ArraySetAsSeries(BufferClose,true);
   ArraySetAsSeries(BufferHigh,true);
   ArraySetAsSeries(BufferLow,true);
//---- определение точности отображения значений индикатора
   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
//--- установим номер бара, с которого будет идти отрисовка
   for(int q=0; q<=4; q++)
      PlotIndexSetInteger(q,PLOT_DRAW_BEGIN,draw_begin); //ПРОБЛЕМА ТУТ!!!!!
      //PlotIndexSetInteger(q,PLOT_SHIFT,0);
      //PlotIndexSetDouble(q,PLOT_EMPTY_VALUE,EMPTY_VALUE);
//----
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,    // количество истории в барах на текущем тике
                const int prev_calculated,// количество истории в барах на предыдущем тике
                const datetime &time[],
                const double &open[],
                const double& high[],     // ценовой массив максимумов цены для расчета индикатора
                const double& low[],      // ценовой массив минимумов цены  для расчета индикатора
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---- объявления локальных переменных
   int    begin_bar,first_bar,last_bar,cnt,copy;
   double High_=0.0,Low_=0.0,Close_=0.0,Open_=0.0;
   double iClose[],iOpen[],iHigh[],iLow[];
   datetime iTime[];
//---
   if(_Period>=Timeframes)
      return(0);
//---- проверка и установка начального бара
   if(ExtHowManyDays < 1)
      begin_bar=Bars(NULL,Timeframes)-2;
   else
      begin_bar=ExtHowManyDays-1;

//---- индексация элементов в массивах как в таймсериях
   ArraySetAsSeries(time,true);
   ArraySetAsSeries(iTime,true);
   ArraySetAsSeries(iOpen,true);
   ArraySetAsSeries(iClose,true);
   ArraySetAsSeries(iHigh,true);
   ArraySetAsSeries(iLow,true);

   copy=begin_bar+2;

   if(CopyTime(NULL,Timeframes,0,copy,iTime)<copy)
      return(0);
   if(CopyOpen(NULL,Timeframes,0,copy,iOpen)<copy)
      return(0);
   if(CopyClose(NULL,Timeframes,0,copy,iClose)<copy)
      return(0);
   if(CopyHigh(NULL,Timeframes,0,copy,iHigh)<copy)
      return(0);
   if(CopyLow(NULL,Timeframes,0,copy,iLow)<copy)
      return(0);

//----
   /*cnt=0;
   while(true)
     {
      if(iTime[0]>=(time[0]-Timeframes*60))
         break;
      cnt++;
      if(cnt>5)
         return(0);
      Sleep(300); //1000
     }*/
//----
   if(prev_calculated!=0)
     {
      begin_bar=0;
      BufferOpen[cnt]=0.0;
      BufferClose[cnt]=0.0;
      BufferHigh[cnt]=0.0;
      BufferLow[cnt]=0.0;
     }
//----
   for(cnt=begin_bar; cnt>=0; cnt--)
     {
      if(cnt<rates_total)
        {
         Open_=iOpen[cnt];
         Close_=iClose[cnt+1];
         High_=iHigh[cnt+1];
         Low_=iLow[cnt+1];
        }
      first_bar=iBarShift(NULL,_Period,iTime[cnt]);

      if(cnt>0)
         last_bar=iBarShift(NULL,_Period,iTime[cnt-1]);
      else
         last_bar=0;

      while(first_bar>=last_bar)
        {
         if((first_bar==last_bar && last_bar>0) || first_bar<0)
            break;

         BufferOpen[first_bar]=Open_;
         BufferClose[first_bar]=Close_;
         BufferHigh[first_bar]=High_;
         BufferLow[first_bar]=Low_;
         if(BufferOpen[first_bar]!=BufferOpen[first_bar+1])
            BufferOpen[first_bar+1]=EMPTY_VALUE;
         if(BufferClose[first_bar]!=BufferClose[first_bar+1])
            BufferClose[first_bar+1]=EMPTY_VALUE;
         if(BufferHigh[first_bar]!=BufferHigh[first_bar+1])
            BufferHigh[first_bar+1]=EMPTY_VALUE;
         if(BufferLow[first_bar]!=BufferLow[first_bar+1])
            BufferLow[first_bar+1]=EMPTY_VALUE;

         first_bar--;
        }
     }
//----
   ChartRedraw(0);
//----
   return(rates_total);
  }
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+

Errors, bugs, questions [ARCHIVE!] Any rookie question, Sultonov differential indicator

Any questions from newcomers on MQL4 and MQL5, help and discussion on algorithms and codes - page 985