Forum

karan 2006.05.30 00:26 

I am trying to call a DLL from an EA.

I am getting an error message in the EA log that I am unable to call the function in the DLL. I thought it might be a parmeter passing issue so I made a dummy function with no params:

int getInt();


In the DLL this is defined as

__declspec(dllexport) int __stdcall getInt() { return 1; }


i am also enabling Expert Advisors and no confirmation of DLL calls.


Can anyone tell me what I am doing wrong or point me to a possible solution?

Tatyana 2006.05.30 11:03 

All functions exported from DLLs have to be described as 'stdcall' (in C-language notation) in order MetaTrader to be able to call them correctly. The Terminal uses only the 'stdcall' appearance.

karan 2006.05.30 18:44 

Thanks. I was able to fix the problem. I had started with a DLL created using the .NET 2005 (unmanged code in C++). Apparemtly there are some settings for the project files that are not compatible with MQL. I did not figure out what they were. Instead, I started with the ExpertSample project file and placed my code in it and modified the file names. This seems to have done the trick and things are working now.