CWinApp::OnHelpIndex
Handles the ID_HELP_INDEX command and provides a default Help topic.
afx_msg void OnHelpIndex( );
Remarks
You must add an ON_COMMAND( ID_HELP_INDEX, OnHelpIndex ) statement to your CWinApp class message map to enable this member function. If enabled, the framework calls this message-handler function when the user of your application selects the Help Index command to invoke WinHelp with the standard HELP_INDEX topic.
Requirements
Header: afxwin.h