advanced search

We Recommend

C++ The Core Language C++ The Core Language
C++: The Core Language is for C programmers transitioning to C++. It's designed to get readers up to speed quickly by covering an essential subset of the language. The subset consists of features without which it's just not C++, and a handful of others that make it a reasonably useful language.

Posted By

kitoon on 03/04/08


Tagged

dll winapi


Versions (?)


DllMain

Published in: C++ 

URL: http://www.coopknow.com/papers.asp?paper=5

A Windows 32-bit DLL does not require any special functions. If you want to initialize your DLL when it is loaded, you can have a function called DllMain and do your initialization, but it is not required. Windows calls the DllMain function of a DLL in four instances:

* When a process attaches the DLL
* When a thread attaches the DLL
* When a process detaches the DLL
* When a thrad detaches the DLL


Plain TextExpand 
  1. BOOL WINAPI DllMain(HINSTANCE hInstance,DWORD fwdReason, LPVOID lpvReserved)
  2. {
  3. 	switch(fwdReason)
  4. 	{
  5. 		case DLL_PROCESS_ATTACH:
  6. 			break;
  7. 		case DLL_THREAD_ATTACH:
  8. 			break;
  9. 		case DLL_PROCESS_DETACH:
  10. 			break;
  11. 		case DLL_THREAD_DETACH:
  12. 			break;
  13. 	}
  14. 	return(TRUE);	// The initialization was successful, a FALSE will abort
  15. 			// the DLL attach
  16. }

Report this snippet 

You need to login to post a comment.