I dont know how can I create a DLL which can export a callback function in C.
I am using Visual Studio 2008.
Can anybody help me with a good sample c开发者_C百科ode or link or tutorial.
Thanks in advance.
(1) Create DLL project (in Visual Studio). (2) List your exported functions in *.def file of your DLL. (3) Compile your DLL project.
Given you have the following function you want to export:
LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam );
If your DLL is called HookDLL for example then you create a file called HookDLL.def with the following contents:
LIBRARY HookDLL
EXPORTS
CallWndProc @1
This is documented here. Your alternative is with __declspec(dllexport) which is documented here.
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