ID_EDITVIEW_UNDO   39 MailEditView.cpp 	ON_COMMAND(ID_EDITVIEW_UNDO, OnEditviewUndo)
ID_EDITVIEW_UNDO  539 MailEditView.cpp 		menu.EnableMenuItem(ID_EDITVIEW_UNDO, MF_ENABLED /* —LŒø */);
ID_EDITVIEW_UNDO  541 MailEditView.cpp 		menu.EnableMenuItem(ID_EDITVIEW_UNDO, MF_GRAYED /* –³Œø */);