Create a MFC Application (UNICODE), paste following code in one of your cpp file.
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{ return TRUE }
Build project and following error occurred:
Error 1 error C2731: 'WinMain' : function cannot be overloaded D:\Test\CopyFiles\CopyFiles.cpp 37 1 CopyFiles
Solution:
Change the third parameter type "LPTSTR" to LPSTR.
Or, include Windows.h and tchar.h