First.cpp #include LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); HINSTANCE g_hInst; LPSTR lpszClass="First"; int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdParam, int nCmdShow) { HWND hWnd; MSG Message; WNDCLASS WndClass; g_hInst=hInstance; WndClass.cbClsExtra=0; WndClass.cbWndExtra=0; WndClass.hbrBackground=(HBRUSH) GetStockObject(WHITE_BRUSH); WndClass..