%d Formatting Issues

[TheHonestPrussian]

Morning all,

Why am I having formatting issues with my debug printing?

Despite reading the following documentation: https://docs.mql4.com/common/printformat and despite having the following code:

PrintFormat("Error Code: # %d",GetLastError());

the Journal is returning: 

2022.06.06 10:24:26.922 xxx EURAUD,M1: Error Code: #0 //This is in an external MQH document which has been attached to my EA

Despite my MessageBox() function returning an actual error code (4200 - I know why the error is returning, I'm testing the diagnostics of the EA), by applying the following: 

         MessageBox("There was an error with the ClosePosition function. Please report #"+IntegerToString(GetLastError()),"Object Create Error",MB_OK | MB_ICONERROR);

Many thanks,

[Drazen Penic]

When invoked, GetlastError() function resets last error code.

You can call it only once.

If you need error code multiple times, either create a variable and save the value of the GetLastError() or use _LastError variable and when you are finished displaying error code, you should call ResetlastError()

[TheHonestPrussian]

Drazen Penic #:

When invoked, GetlastError() function resets last error code.

You can call it only once.

If you need error code multiple times, either create a variable and save the value of the GetLastError() or use _LastError variable and when you are finished displaying error code, you should call ResetlastError()

Perfect, I've applied the following:

if(!ObjectCreate(0,"spread_indicator",OBJ_LABEL,0,0,0 )){
      
            SendMail("Error Code #"+IntegerToString(_LastError)+" has occured","The Error Code #"+IntegerToString(_LastError)+" has unfortunately occured on ticket number #"+IntegerToString(OrderTicket(),0)+".\n\nFor a complete list of MQL4 Error Codes, visit https://docs.mql4.com/constants/errorswarnings/errorcodes");
      
               PrintFormat("Error Code for Spread Indicator #%d ", _LastError);
      
                  MessageBox("There was an error with the Spread Indicator function. Please report #"+IntegerToString(_LastError),"Object Create Error",MB_OK | MB_ICONERROR);
      
                     ResetLastError();
           
      }

All seems to be working now.

Much appreciated. 

[William Roeder]

TheHonestPrussian #: All seems to be working now.

SendMail("Error Code #"+IntegerToString(_LastError)+" has occured","The Error Code #"+IntegerToString(_LastError)+" has unfortunately occured on ticket number #"+IntegerToString(OrderTicket(),0)+".\n\nFor a complete list of MQL4 Error Codes, visit https://docs.mql4.com/constants/errorswarnings/errorcodes");

PrintFormat("Error Code for Spread Indicator #%d ", _LastError);

Now you are printing the error code for SendMail.

[TheHonestPrussian]

William Roeder #:

Now you are printing the error code for SendMail.

Yes. Yes I am....