Questions from Beginners MQL5 MT5 MetaTrader 5 - page 1465

[Alexey Belyakov]

const string name="VLine,VLine2,VLine3", // line name

I made the line name unique. In input too. Doesn't help.

[Aleksandr Slavskii]

Alexey Belyakov #:

const string name="VLine,VLine2,VLine3", // line name

I made the line name unique. In input too. Doesn't help.

datetime time1 = D'2021.11.15 00:00:00';
datetime time2 = D'2022.11.15 00:00:00';
datetime time3 = D'2023.11.15 00:00:00';
// в этом случае так делаем
VLineCreate(0, "InpName1", 0, time1, InpColor, InpStyle, InpWidth, InpBack, InpSelection, InpHidden);
VLineCreate(0, "InpName2", 0, time2, InpColor, InpStyle, InpWidth, InpBack, InpSelection, InpHidden);
VLineCreate(0, "InpName3", 0, time3, InpColor, InpStyle, InpWidth, InpBack, InpSelection, InpHidden);

You made the name somewhere in the wrong place, and not like that).

[Aleksandr Slavskii]

Alexey Belyakov #:

const string name="VLine,VLine2,VLine3", // line name

I made the line name unique. In input too. Doesn't help.

Here, run without input parameters, copy it directly like this and maybe it will become clearer.

//+------------------------------------------------------------------+
//| Создает вертикальную линию                                       |
//+------------------------------------------------------------------+
bool VLineCreate(const long            chart_ID = 0,      // ID графика
                 const string          name = "VLine",    // имя линии
                 const int             sub_window = 0,    // номер подокна
                 datetime              time = 0,          // время линии
                 const color           clr = clrRed,      // цвет линии
                 const ENUM_LINE_STYLE style = STYLE_SOLID, // стиль линии
                 const int             width = 1,         // толщина линии
                 const bool            back = false,      // на заднем плане
                 const bool            selection = true,  // выделить для перемещений
                 const bool            hidden = true)     // скрыт в списке объектов

  {
   ObjectCreate(chart_ID, name, OBJ_VLINE, sub_window, time, 0);
//--- установим цвет линии
   ObjectSetInteger(chart_ID, name, OBJPROP_COLOR, clr);
//--- установим стиль отображения линии
   ObjectSetInteger(chart_ID, name, OBJPROP_STYLE, style);
//--- установим толщину линии
   ObjectSetInteger(chart_ID, name, OBJPROP_WIDTH, width);
//--- отобразим на переднем (false) или заднем (true) плане
   ObjectSetInteger(chart_ID, name, OBJPROP_BACK, back);
//--- включим (true) или отключим (false) режим перемещения линии мышью
//--- при создании графического объекта функцией ObjectCreate, по умолчанию объект
//--- нельзя выделить и перемещать. Внутри же этого метода параметр selection
//--- по умолчанию равен true, что позволяет выделять и перемещать этот объект
   ObjectSetInteger(chart_ID, name, OBJPROP_SELECTABLE, selection);
   ObjectSetInteger(chart_ID, name, OBJPROP_SELECTED, selection);

   return(true);
  }
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
   datetime time1 = D'2023.06.26 10:00:00';
   datetime time2 = D'2023.06.26 11:00:00';
   datetime time3 = D'2023.06.26 12:00:00';
//--- создадим вертикальную линию
   VLineCreate(0, "Name1", 0, time1, clrBlue, STYLE_DASHDOTDOT);
   VLineCreate(0, "Name2", 0, time2, clrGreen, STYLE_SOLID, 5);
   VLineCreate(0, "Name3", 0, time3);
  }
//+------------------------------------------------------------------+

[Alexey Belyakov]

Aleksandr Slavskii #:

Here, run it without input parameters, copy it directly like this and maybe it will become clearer.

Thank you very much! Just what I need!

[deerhunter22]

Here are the Buy/Sell functions in the CTrade trading class

I specify a price in them, but the position is still opened by Ask/Bid.

What kind of price can I specify here?

[Valeriy Yastremskiy]

Alexey Belyakov #:

Thank you very much! Just what I need!

unique name)

string  var1=TimeToStr(TimeCurrent(),TIME_DATE|TIME_SECONDS);
     string NameLine="VLine_" +  "_"+var1;

[Alexey Viktorov]

deerhunter22 CTrade trading class

I specify a price in them, but the position is still opened by Ask/Bid.

What kind of price can I specify here?

Pay attention to other methods

   //--- additions methods
   bool              Buy(const double volume,const string symbol=NULL,double price=0.0,const double sl=0.0,const double tp=0.0,const string comment="");
   bool              Sell(const double volume,const string symbol=NULL,double price=0.0,const double sl=0.0,const double tp=0.0,const string comment="");
   bool              BuyLimit(const double volume,const double price,const string symbol=NULL,const double sl=0.0,const double tp=0.0,
                              const ENUM_ORDER_TYPE_TIME type_time=ORDER_TIME_GTC,const datetime expiration=0,const string comment="");
   bool              BuyStop(const double volume,const double price,const string symbol=NULL,const double sl=0.0,const double tp=0.0,
                             const ENUM_ORDER_TYPE_TIME type_time=ORDER_TIME_GTC,const datetime expiration=0,const string comment="");
   bool              SellLimit(const double volume,const double price,const string symbol=NULL,const double sl=0.0,const double tp=0.0,
                               const ENUM_ORDER_TYPE_TIME type_time=ORDER_TIME_GTC,const datetime expiration=0,const string comment="");
   bool              SellStop(const double volume,const double price,const string symbol=NULL,const double sl=0.0,const double tp=0.0,
                              const ENUM_ORDER_TYPE_TIME type_time=ORDER_TIME_GTC,const datetime expiration=0,const string comment="");

[deerhunter22]

Alexey Viktorov #:

Pay attention to other methods

Yes, I know about them, of course, but I need for other things.... Anyway, the point is this. I recently started trading on binance and wanted to test it. There is also a kitchen broker with a lot of cryptocurrencies, but the spread interferes. And so the quotes match pretty well with binance quotes, especially if you consider the price (bid+ask)/2.

Here I wanted to maximise the match, although of course it will be possible to neglect these discrepancies.

[Artyom Trishkin]

deerhunter22 #:

Yeah, I know about them, but that's not what I'm after. Anyway, the point is this. I recently started trading on binance and wanted to test it. There is also a kitchen broker with a lot of cryptocurrencies, but the spread interferes. And so the quotes match pretty well with those of binance, especially if you consider the price (bid+ask)/2.

Here I wanted to maximise the match, although of course it will be possible to neglect these discrepancies.

Perhaps you can look into creating your own chart. MQL5 allows it.

[Dmitry Ivanushko]

Good afternoon. When writing an Expert Advisor on Mql5 I encountered a problem. There is an array with values of candlesticks opening for the year. On each candlestick of this array I need to create an array of n-candles, say 30, to check the highs and lows. Something like a Zigzag indicator.

I wrote this code, which gives an error: "array out of range" or the values of maximum and minimum in the whole array, but not in the required 30-candle period.

for(int i=0; i<ArraySize(opens); i++)
  {
    if(i+30<=ArraySize(opens))
      {
       double maximum=0;
       double minimum=9;
       for(int j=0; j<30; j++)
        {
         maximum = ArrayMaximum(opens, i, i+j);
         minimum = ArrayMaximum(opens, i, i+j);
        }
     }
  }

Perhaps I need to create another array to check in the ArrayMaximum() and ArrayMinimum() functions, but I'm confused with nested loops and array size.

Please, give me a hint.