CFrameWnd::OnSetPreviewMode
Visual Studio 2012
Call this member function to set the application's main frame window into and out of print-preview mode.
virtual void OnSetPreviewMode( BOOL bPreview, CPrintPreviewState* pState );
The default implementation disables all standard toolbars and hides the main menu and the main client window. This turns MDI frame windows into temporary SDI frame windows.
Override this member function to customize the hiding and showing of control bars and other frame window parts during print preview. Call the base class implementation from within the overridden version.