CWinApp::OnFileOpen

实现 ID_FILE_OPEN 命令。

afx_msg void OnFileOpen( );

备注

必须将 ON_COMMAND( ID_FILE_OPEN, OnFileOpen ) 语句添加到您的 CWinApp 选件类消息映射启用此成员函数。如果启用，文件打开命令的此函数处理执行。

有关默认行为和指南的有关如何重写该成员函数，请参见 技术说明22。

示例

// The following message map, produced by the Application Wizard, binds 
// the File New, Open, and Print Setup menu commands to default
// framework implementations of these commands.
BEGIN_MESSAGE_MAP(CStdApp, CWinApp)
   // Standard file based document commands
   ON_COMMAND(ID_FILE_NEW, &CWinApp::OnFileNew)
   ON_COMMAND(ID_FILE_OPEN, &CWinApp::OnFileOpen)
   // Standard print setup command
   ON_COMMAND(ID_FILE_PRINT_SETUP, &CWinApp::OnFilePrintSetup)
END_MESSAGE_MAP()

// The following message map illustrates how to rebind the
// File New, Open and Print Setup menu commands to handlers that
// you implement in your CWinApp-derived class.  
// Note, you can name the handler CCustomApp::OnFileNew instead of
// CCustomApp::OnMyFileNew, and likewise for the other handlers, if desired.
BEGIN_MESSAGE_MAP(CCustomApp, CWinApp)
   ON_COMMAND(ID_FILE_NEW, &CCustomApp::OnMyFileNew)
   ON_COMMAND(ID_FILE_OPEN, &CCustomApp::OnMyFileOpen)
   ON_COMMAND(ID_FILE_PRINT_SETUP, &CCustomApp::OnMyFilePrintSetup)
END_MESSAGE_MAP()

要求

Header: afxwin.h

请参见

参考

CWinApp选件类

层次结构图

CWinApp::OnFileNew