CMFCToolBarMenuButton::SaveBarState
This topic is included for completeness. For more detail see the source code located in the VC\atlmfc\src\mfc folder of your Visual Studio installation.
virtual void SaveBarState();
Remarks
The framework calls this method when it creates a toolbar button as the result of a drag-and-drop operation. This method calls the CMFCPopupMenu::SaveState method of the top-level pop-up menu, which causes the parent button of the pop-up menu to recreate its menu.
Requirements
Header: afxtoolbarmenubutton.h