WNDCLASSEX wc = {0}; RECT windowRect = {0}; DWORD windowstyle = {0}; char szClassName[MAX_PATH] = ""; wc.cbSize = sizeof( WNDCLASSEX ); wc.style = 0; wc.lpfnWndProc = WndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon( NULL, IDI_APPLICATION ); wc.hCursor = LoadCursor( NULL, IDC_ARROW ); wc.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH ); wc.lpszMenuName = 0; wc.lpszClassName = szClassName; wc.hIconSm = LoadIcon( NULL, IDI_APPLICATION ); if( !RegisterClassEx( &wc ) ) { MessageBox( NULL, "Window Registration Failed!", "Error!", MB_ICONEXCLAMATION | MB_OK ); return 0; } What is wrong with the registration?

oh, god