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Asked: 2026-06-15T15:01:12+00:00

Hi I have a source code working fine when compiled using vs2008, in 32

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Hi I have a source code working fine when compiled using vs2008, in 32 bit. Now I am trying to compile the same source code in 64bit. For this piece of code:

if(EnumResourceLanguages(gHResources, RT_STRING, MAKEINTRESOURCE(1),EnumLangProc, 0) && (0 < gNumSupportedLangs))

I am getting the following error:

Error: error C2664: 'EnumResourceLanguagesA' : cannot convert parameter 4 from 'BOOL (__cdecl *)(HMODULE,LPCTSTR,LPCTSTR,WORD,LONG)' to 'ENUMRESLANGPROCA'

Can any help me with how to get rid of it?

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1 Answer

  1. Editorial Team

    Your 4th parameter of the callback is defined as LONG. The EnumResLangProc expects LONG_PTR as 4th parameter. This is a bug in the code but in 32-bit LONG is the same size as LONG_PTR (4 bytes) so it compiles fine. In 64-bit LONG_PTR is 8 bytes long so you get an error. Change your callback signature to accept LONG_PTR as 4th parameter and it will compile for both 32 and 64 bit.

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