c++_CWinApp

CWinApp:MFC 中的主应用程序类封装用于 Windows 操做系统的应用程序的初始化、运行和终止.

ON_COMMAND(ID_FILE_NEW, &CWinApp::OnFileNew)
ON_COMMAND(ID_FILE_OPEN, &CWinApp::OnFileOpen)
ON_COMMAND(ID_FILE_PRINT_SETUP, &CWinApp::OnFilePrintSetup)
ON_COMMAND(ID_FILE_CLOSE, &CWinApp::OnFileClose)
ON_COMMAND(ID_FILE_SAVE, &CWinApp::OnFileSave)
ON_COMMAND(ID_FILE_SAVE_AS, &CWinApp::OnFileSaveAs)

1.建立新的View视图CWinApp::OnFileNew:

2.关闭当前View视图CWinApp::OnFileClose:

3.打开CWinApp::OnFileOpen:

4.保存CWinApp::OnFileSave和另存为CWinApp::OnFileSaveAs:

5.设置打印CWinApp::OnFilePrintSetup:

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