How to solve the problem of making EA on two charts - General

Vasiliy Sokolov 2018.12.20 14:57 #941

Реter Konow:

Already sorted out the unions too.

I haven't figured it out all the way to the end.

That's not right:

Char_Uint u;
   uint width,height;
   string Message; 
   //-----------------------------
   if(!ResourceReadImage("\\Experts\\Tester EA.ex4::Resource",u.Uint,width,height))Print("Failed to read resource!  ",GetLastError());
   //-----------------------------
   Message = CharArrayToString(u.Char);
   //-----------------------------
   Print(Message);

Right:

Char_Uint u;
   uint width,height;
   string Message; 
   //-----------------------------
   if(!ResourceReadImage("\\Experts\\Tester EA.ex4::Resource",u.Uint,width,height))Print("Failed to read resource!  ",GetLastError());
   //-----------------------------
   double bid = u.Double;
   //-----------------------------
   Print(DoubleToString(bid));

And what's the carelessness in the code? You have different Char_Uint structures for recipient and sender!

Реter Konow 2018.12.20 15:15 #942

Vasiliy Sokolov:

It's not exactly figured out all the way to the end.

That's not right:

Right:

And what's the carelessness in the code? You have different Char_Uint structures for the recipient and the sender!

Thank you, Vasily. I didn't know that it is necessary. Although I tried the variant where the structures are identical too.

Anyway, the output result is not what I want. Here is the code:

//+------------------------------------------------------------------+
//|                                                    Tester EA.mq4 |
//|                                                      Peter Konow |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Peter Konow"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
union Char_Uint
  {
   uchar   Char[8];
   uint    Uint[2];  
   double  Double; 
  };
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
   //----------------------------------------------
   if(!ObjectCreate(0,"Resource",OBJ_BITMAP_LABEL,0,0,0))Print("Object is not created!  ",GetLastError());
   else Print("Object created!");
   //-------------------------------
   if(!ObjectSetString(0,"Resource",OBJPROP_BMPFILE,"::Resource"))Print("BMPFILE is not created!");
   else Print("BMPFILE created!");
   //----------------------------------------------
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//--- destroy timer
   
      
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   //---------------------------
   Char_Uint u;
   //---------------------------
   u.Double = Bid;
   //---------------------------
   if(!ResourceCreate("::Resource",u.Uint,2,1,0,0,0,COLOR_FORMAT_XRGB_NOALPHA))Print("Resource is not created!");
   //---------------------------   
  }
//+------------------------------------------------------------------+
//| Timer function                                                   |
//+------------------------------------------------------------------+
void OnTimer()
  {
//---
   
  }
//+------------------------------------------------------------------+

And the recipient:

//+------------------------------------------------------------------+
//|                                              Resource reader.mq4 |
//|                                                      Peter Konow |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Peter Konow"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property indicator_chart_window
//+------------------------------------------------------------------+
union Char_Uint
  {
   uchar   Char[8];
   uint    Uint[2];  
   double  Double; 
  };
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   EventSetMillisecondTimer(5250); 
   
   if(!ObjectSetString(0,"Resource",OBJPROP_BMPFILE,"\\Experts\\Tester EA.ex4::Resource"))Print("Resource is not connected!");
   else Print("Resource connected!");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
   
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+
//| Timer function                                                   |
//+------------------------------------------------------------------+
void OnTimer()
  {
  Char_Uint u;
   uint width,height;
   string Message; 
   //-----------------------------
   if(!ResourceReadImage("\\Experts\\Tester EA.ex4::Resource",u.Uint,width,height))Print("Failed to read resource!  ",GetLastError());
   //-----------------------------
   double bid = u.Double;
   //-----------------------------
   Print(DoubleToString(bid,5));
  }
//+------------------------------------------------------------------+

Result:

2018.12.20 17:13:37.395 Resource reader GBPUSD,M5: 9223464270575144355.75808

But at least it doesn't change. The value is constant. (although it should change as the Bid value changes).

Requests & Ideas Compiled script of Graphical MQL4 StringToDouble always returns

Vasiliy Sokolov 2018.12.20 15:23 #943

Реter Konow:

But at least it doesn't change. The value is constant. (although it should change, as the Bid value changes).

This is very strange, because your example on my computer works correctly. Try both to make experts and place simply on the two charts.

Реter Konow 2018.12.20 15:25 #944

Vasiliy Sokolov:

This is very strange, because your example on my computer works correctly. Try both to make experts and place just the two charts.

Ok.

Реter Konow 2018.12.20 15:28 #945

Here is the code of the second EA on the second graph. The result is the same...

//+------------------------------------------------------------------+
//|                                                  Tester EA 2.mq4 |
//|                                                      Peter Konow |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Peter Konow"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
union Char_Uint
  {
   uchar   Char[8];
   uint    Uint[2];  
   double  Double; 
  };
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   
   if(!ObjectSetString(0,"Resource",OBJPROP_BMPFILE,"\\Experts\\Tester EA.ex4::Resource"))Print("Resource is not connected!");
   else Print("Resource connected!");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Timer function                                                   |
//+------------------------------------------------------------------+
void OnTick()
  {
  Char_Uint u;
   uint width,height;
   //-----------------------------
   if(!ResourceReadImage("\\Experts\\Tester EA.ex4::Resource",u.Uint,width,height))Print("Failed to read resource!  ",GetLastError());
   //-----------------------------
   double bid = u.Double;
   //-----------------------------
   Print(DoubleToString(bid,5));
  }
//+------------------------------------------------------------------+

It doesn't work as it should.

Vasiliy Sokolov 2018.12.20 15:29 #946

Here are my sources just in case, check them out:

Files:

Tester_EA.mq4 3 kb

Tester_EA_Get.mq4 2 kb

Реter Konow 2018.12.20 15:40 #947

Vasiliy Sokolov:
Here are my sources just in case, check them:

No. Same thing. Maybe it's because of spaces in EA names? You downloaded them without spaces, but I got spaces. I'll redo it.

Vasiliy Sokolov 2018.12.20 15:43 #948

Реter Konow:

No. Same thing. Maybe it's because of spaces in EA names? You downloaded them without spaces, but I got spaces. I'll redo it.

Try it. Use of spaces is highly undesirable. Get rid of this bad habit.

Реter Konow 2018.12.20 15:47 #949

Writes:

2018.12.20 17:46:26.798 Tester_EA_2 EURCHF,H1: 0.00000
2018.12.20 17:46:34.801 Tester_EA_2 EURCHF,H1: Failed to read resource!  4100

4100 -

ERR_SOME_FILE_ERROR

Реter Konow 2018.12.20 15:55 #950

Got it. File read error - just forgot to add a dash. Added it and got back to the result:

2018.12.20 17:55:24.590 Tester_EA_2 EURCHF,H1: 9223464270575144355.75808

My approach. The core is the engine. - page 95