Any questions from newcomers on MQL4 and MQL5, help and discussion on algorithms and codes - page 1398

[SanAlex]

Andrey Sokolov:

Thank you. So it's only in mt5. If anyone knows how to add an indicator from an EA, please let me know

You can also save Indicators and Expert on a template and as the function works - will install you an Expert together with the Indicators.

//+------------------------------------------------------------------+
//|                                                  DeleteChart.mq4 |
//|                        Copyright 2021, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property  show_inputs
//---
input string Template = "ADX"; // Имя шаблона(without '.tpl')
//---
ENUM_TIMEFRAMES TimeFrame; // Change TimeFrame - Current = dont changed
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   DeleteChart();
  }
//+------------------------------------------------------------------+
//| start function                                                   |
//+------------------------------------------------------------------+
void DeleteChart(void)
  {
   long currChart,prevChart=ChartFirst();
   int i=0,limit=100;
   bool errTemplate;
   while(i<limit)
     {
      currChart=ChartNext(prevChart);
      if(TimeFrame!=PERIOD_CURRENT)
        {
         ChartSetSymbolPeriod(prevChart,ChartSymbol(prevChart),TimeFrame);
        }
      errTemplate=ChartApplyTemplate(prevChart,Template+".tpl");
      if(!errTemplate)
        {
         Print("Error ",ChartSymbol(prevChart),"-> ",GetLastError());
        }
      if(currChart<0)
         break;
      Print(i,ChartSymbol(currChart)," ID =",currChart);
      prevChart=currChart;
      i++;
     }
  }
//+------------------------------------------------------------------+

mt4 documentationhttps://docs.mql4.com/ru/chart_operations/chartapplytemplate

mt5documentationhttps://www.mql5.com/ru/docs/chart_operations/chartapplytemplate

[Andrei Sokolov]

SanAlex:

You can also save Indicators and Expert on a template and when the function works it will install you an Expert together with the Indicators.

mt4 documentationhttps://docs.mql4.com/ru/chart_operations/chartapplytemplate

mt5 documentationhttps://www.mql5.com/ru/docs/chart_operations/chartapplytemplate

thanks for the answers. But I need it without any preliminaries.

[Sergey Likho]

Funny glitch in MT4

If you create a duplicate of an object in a chart using the pressed cntrl button, the id == CHARTEVENT_OBJECT_CREATE event is caught in the Expert Advisor

If I delete this object from the Expert Advisor, the error 4202 - Object does not exist will pop up. At the same time, the object is already on the chart.

What to do? How do I delete the object?

   if(id == CHARTEVENT_OBJECT_CREATE)
     {
      Print("New object create", sparam);
      if(!ObjectDelete(sparam))
       {
          Print(" error remove ", GetLastError(), " ",sparam);    //здесь будет ошибка 4202.  Хотя это событие срабатывает когда объект есть на графике! 
       }
}

[[Deleted]]

Andrey Sokolov:

Thanks for the answers. But you have to do it without any preliminaries.

First, you take the required indicator and add to it the parameters you need - period, TF, line width, line colour, etc.

You save it under a different name. Compile it. In the Expert Advisor in OnInit() or in any other place (not in OnTick()) add your indicator

handle_newInd = iCustom(Symbol(),Period(),"my_Ind\\new_xxxxx",in_period,in_size,in_from,.....);
   if(handle_newCandles == INVALID_HANDLE)
   {
      return(INIT_FAILED);
   }
   ChartIndicatorAdd(0,1,handle_newInd);

[Tretyakov Rostyslav]

Сергей Таболин:

First you take the required indicator and add the required parameters to its input - period, TF, line width, line colour, etc.

Save it under a different name. Compile it. In the Expert Advisor in OnInit() or in any other place (not in OnTick()) add your indicator

MT4 must!

[Taras Slobodyanik]

Sergey Likho:

Funny glitch in MT4

If you create a duplicate of an object in a chart using the pressed cntrl button, the id == CHARTEVENT_OBJECT_CREATE event is caught in the Expert Advisor

If I delete this object from the Expert Advisor, the error 4202 - Object does not exist will pop up. At the same time, the object is already on the chart.

What to do? How do I delete the object?

This is not a glitch, this is a feature)
The user is holding the object with the mouse - it cannot be deleted.

Wait until the mouse button is released and then delete it.

[Sergey Likho]

Taras Slobodyanik:

this is not a glitch but a feature)
the user is holding an object with the mouse - there is no way to delete it.

Wait until the mouse button is released and then delete.

Thank you very much! It really is a bug)) Sorted it out. Everything works now!

[fxbo]

Hi all!
who can help to tweak the code of an indicator...
1. Invert the fibo, i.e. the fibo is stretched towards the formed zigzag stick
2. Add a parameter in the settings to set the allert to a specified level...., i.e. I manually specify the level at which I want it to buzz and show the allert point...
Should be something like 1-2-3


Thanks in advance ....

Example on screenshot, code attached....

//+------------------------------------------------------------------+
//|                                                                  |
//|                 Copyright © 2000-2007, MetaQuotes Software Corp. |
//|                                         http://www.metaquotes.ru |
//+------------------------------------------------------------------+
// 
// 2009.12 - добавлены фибо уровни, "nen"(ом) c форума MQL

#property copyright ""
#property link "ххххх"
#property link "ххххх"
#property description "ххххх"
#property strict

#property indicator_chart_window

#property indicator_buffers 2

#property indicator_color1 clrDarkGray
#property indicator_color2 clrRed
#property indicator_width2 3

//----
extern int    Length          = 6;           // Length
extern int    CountBars       = 300;        // History
extern bool   fibo            = true;        // Use FIBO
extern color  colorFibo       = clrSkyBlue;  // Color FIBO
extern bool   AlertsMessage   = true;        // Alert Message
extern bool   AlertsSound     = false;       // Alert Sound
extern bool   AlertsEmail     = false;       // Alert Email
extern bool   AlertsMobile    = false;       // Alert Mobile
extern string AlertsSoundFile = "alert.wav"; // Alert Sound File
//----
double buffer[];
double lBar, hBar;
datetime tiZZ;
double p1,p2;
datetime t1,t2;
double   fi_1[]={0, 0.236, 0.382, 0.5, 0.618, 0.786, 1.0, 1.272, 1.5, 1.618, 1.854, 2.0, 2.618, 3.5, 4.618, 5.618, 6.854};
string   fitxt100_1[]={"0.0", "23.6", "38.2", "50.0", "61.8", "78.6", "100.0", "127.2", "150.0", "161.8", "185.4", "200.0", "261.8", "350.0", "461.8", "561.8", "685.4"};
int Sizefibo;
string TF[]={"MN","W1","D1","H4","H1","m30","m15","m5","m1"};
string Period_tf;
double Arr[];
int LastSwing;
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void init()
  {
   SetIndexStyle (0,DRAW_SECTION,0,1);
   SetIndexBuffer(0,buffer);
   SetIndexLabel (0,"Value");
   SetIndexDrawBegin(0,0);
   
   SetIndexStyle (1,DRAW_ARROW);
   SetIndexBuffer(1,Arr);
   SetIndexArrow (1,159);
   SetIndexLabel (1,"Arr");

   
   Sizefibo=ArraySize(fi_1);
   switch (Period())
     {
      case 1     : {Period_tf=TF[8];break;}
      case 5     : {Period_tf=TF[7];break;}
      case 15    : {Period_tf=TF[6];break;}
      case 30    : {Period_tf=TF[5];break;}
      case 60    : {Period_tf=TF[4];break;}
      case 240   : {Period_tf=TF[3];break;}
      case 1440  : {Period_tf=TF[2];break;}
      case 10080 : {Period_tf=TF[1];break;}
      case 43200 : {Period_tf=TF[0];break;}
     }
    LastSwing = 0;
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function. Начало.              |
//+------------------------------------------------------------------+
int deinit()
  {
   ObjectDelete("_%fibo");
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function. Конец.               |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void start()
  {
   int shift, zu, zd, Swing, Swing_n, i, i1=0, i2=0;
   double HH, LL, BH, BL;
//----
   if (tiZZ!=Time[0] || lBar<Low[0] || hBar>High[0]) // micmed+nen
     {
      tiZZ=Time[0]; lBar=Low[0]; hBar=High[0];
      if ((Bars-IndicatorCounted()-1)>2) ArrayInitialize(buffer,EMPTY_VALUE);
     }
   else return;

   Swing=0;
   Swing_n=0;
   shift=CountBars-1;
   zu=shift;
   zd=shift;
   BH=High[shift];
   BL=Low[shift];
//----
   for(shift=CountBars-1; shift>=0; shift--)
     {
      HH=High[Highest(NULL,0,MODE_HIGH,Length,shift+1)];
      LL=Low [Lowest (NULL,0,MODE_LOW ,Length,shift+1)];
      if (Low[shift]<LL && High[shift]>HH)
        {
         Swing=2;
         if (Swing_n== 1) zu=shift+1;
         if (Swing_n==-1) zd=shift+1;
        }
      else
        {
         if (Low [shift]<LL) Swing=-1;
         if (High[shift]>HH) Swing= 1;
        }
      if (Swing!=Swing_n && Swing_n!=0)
        {
         if (Swing== 2) {Swing=-Swing_n; BH=High[shift]; BL=Low[shift];}
         if (Swing== 1) {buffer[zd]=BL; i1=i2; i2=zd;}
         if (Swing==-1) {buffer[zu]=BH; i1=i2; i2=zu;}
         BH=High[shift];
         BL=Low [shift];
        }
      if (Swing== 1) {if (High[shift]>=BH) {BH=High[shift]; zu=shift;}}
      if (Swing==-1) {if (Low [shift]<=BL) {BL=Low [shift]; zd=shift;}}
      Swing_n=Swing;
     }
   
    if(LastSwing!=Swing) 
     {
       if(LastSwing!=0)
        { 
          if(AlertsMessage || AlertsEmail || AlertsMobile || AlertsSound)
           {
             string message = (WindowExpertName()+" - "+Symbol()+"  "+PeriodString()+" - Change FIBO");

             if (AlertsMessage) Alert(message);
             if (AlertsEmail)   SendMail(Symbol()+" - "+WindowExpertName()+" - ",message);
             if (AlertsMobile)  SendNotification(message);
             if (AlertsSound)   PlaySound(AlertsSoundFile);
           }
        
          Arr[0] = Close[0]; 
        } 
       LastSwing = Swing;
     }  

   if (fibo)
     {
      p1=buffer[i1]; t1=Time[i1];
      p2=buffer[i2]; t2=Time[i2];

      string nameObj="_%fibo";        
      ObjectDelete(nameObj);
      ObjectCreate(nameObj,OBJ_FIBO,0,t1,p1,t2,p2);

      ObjectSet(nameObj,OBJPROP_LEVELCOLOR,colorFibo);

      ObjectSet(nameObj,OBJPROP_COLOR,CLR_NONE);
      ObjectSet(nameObj,OBJPROP_STYLE,STYLE_DOT);
      ObjectSet(nameObj,OBJPROP_WIDTH,0);
      ObjectSet(nameObj,OBJPROP_LEVELSTYLE,STYLE_DOT);
      ObjectSet(nameObj,OBJPROP_LEVELWIDTH,0);
      ObjectSet(nameObj,OBJPROP_BACK,true);

      ObjectSet(nameObj,OBJPROP_FIBOLEVELS,Sizefibo);
      for (i=0;i<Sizefibo;i++)
        {
         ObjectSet(nameObj,OBJPROP_FIRSTLEVEL+i,fi_1[i]);
         ObjectSetFiboDescription(nameObj, i, fitxt100_1[i]+" "+DoubleToStr((p1-p2)*fi_1[i]+p2, Digits)+"-"+Period_tf); 
        }
     }

  }
//+------------------------------------------------------------------+
//| Period String                                                    |
//+------------------------------------------------------------------+
string PeriodString()
  {
    switch (_Period) 
     {
        case PERIOD_M1:  return("M1");
        case PERIOD_M5:  return("M5");
        case PERIOD_M15: return("M15");
        case PERIOD_M30: return("M30");
        case PERIOD_H1:  return("H1");
        case PERIOD_H4:  return("H4");
        case PERIOD_D1:  return("D1");
        case PERIOD_W1:  return("W1");
        case PERIOD_MN1: return("MN1");
        default: return("M"+(string)_Period);
     }  
    return("M"+(string)_Period); 
  }
//+------------------------------------------------------------------+

[[Deleted]]

btc.mmd:
Hi all!
can help me fix the indicator
1. Turn the fibo, i.e. the fibo is stretched towards the formed stick zigzag
2. Add the parameter "set allert to a specified level....", i.e. I manually indicate the level at which I want it to buzz and show the allert point...

Should turn out something like 1-2-3

Thanks in advance ....

Example on screenshot, code attached....

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

//| |

//| Copyright © 2000-2007, MetaQuotes Software Corp. |

//| http://www.metaquotes.ru |

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

// ххххххххх

// 2009.12 - added Fibo levels, "nen"(by) from MQL forum.

#property copyright ""

#property link "хххххх"

#property link "xxxxxx"

#property description "xxxxxxxxxx"

#property strict

For starters, remove your spoofing and paste the code in a human way.

//+------------------------------------------------------------------+
//|                                                                  |
//|                 Copyright © 2000-2007, MetaQuotes Software Corp. |
//|                                         http://www.metaquotes.ru |
//+------------------------------------------------------------------+
// хххххххххххх
// 2009.12 - добавлены фибо уровни, "nen"(ом) c форума MQL.

#property copyright ""
#property link "ххххх"
#property link "хххххх"
#property description "ххххххххх"
#property strict

[Andrey Sayapin]

Hi folks!

Can you tell me why nothing is displayed on the chart when you put this indicator on?

It compiles without errors, rsi_channel is in the folder...don't understand(