// hello.cpp #include class CMainWindow : public CFrameWnd { public: CMainWindow() { Create(NULL,"Hello World!"); } }; class CHelloApp : public CWinApp { public: virtual BOOL InitInstance() { m_pMainWnd = new CMainWindow(); m_pMainWnd->ShowWindow(m_nCmdShow); m_pMainWnd->UpdateWindow(); return TRUE; } }; CHelloApp HelloApp; // HelloApp's constructor initializes and runs the app