Callback functions from dll

Hi.

I've been trying to load a function from a dll, what I did was this:

Code:

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typedef LRESULT (CALLBACK *pfKeyProc)(int code, WPARAM wParam, LPARAM lParam);
HINSTANCE dll = LoadLibrary(someLib.dll);
pfKeyProc pfKey;
pfKey = (pfKeyProc)GetProcAddress((HMODULE)(dll), "KeyboardProc");

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And the definition in the .dll looked like this :

Code:

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extern "C" __declspec(dllexport) LRESULT CALLBACK KeyboardProc(int code, WPARAM wParam, LPARAM lParam);

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It didn't load correctly, but if I removed CALLBACK from the definition in the .dll it did. Should I define my typedef in some other way or could I just omit 'CALLBACK' from the defintion ?
(Or am I doing it all wrong ?)

One possible solution is to replace CALLBACK with __stdcall.

Kuphryn

Why can't I GetProcAddress a function I dllexport'ed?

You need to compile your DLL with a DEF file. Otherwise, function names will be decorated.

Alternatively, you can use (not preferred, processor dependent):

Code:

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pfKey = (pfKeyProc) GetProcAddress(dll, "_KeyboardProc@12");

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