Unload DLL from the process

i need to unload my dll from process when my dll do function complete. simple. int MainThread() { DWORD dwTimes = 0; while(true) { if(dwTimes > 2) { // need unload my dll from process break; } MessageBox(0, "test", "title", MB_OK); ++ dwTimes; Sleep(2000); } return TRUE; } Thank you and regard.