The optional entry point into a dynamic-link library (DLL).
BOOL WINAPI DllMain(
   DWORD dwReason,
   LPVOID /*lpReserved*/
) throw( );
Parameters
- dwReason 
 If set to DLL_PROCESS_ATTACH, the DLL_THREAD_ATTACH and DLL_THREAD_DETACH notification calls are disabled.
- lpReserved 
 Reserved.
Return Value
Always returns TRUE.
Remarks
Disabling the DLL_THREAD_ATTACH and DLL_THREAD_DETACH notification calls can be a useful optimization for multithreaded applications that have many DLLs, that frequently create and delete threads, and whose DLLs do not need these thread-level notifications of attachment/detachment.
Requirements
Header: atlbase.h