CWinApp::SaveAllModified
Called by the framework to save all documents when the application's main frame window is to be closed, or through a WM_QUERYENDSESSION message.
virtual BOOL SaveAllModified( );
Return Value
Nonzero if safe to terminate the application; 0 if not safe to terminate the application.
Remarks
The default implementation of this member function calls the CDocument::SaveModified member function in turn for all modified documents within the application.
Requirements
Header: afxwin.h