a RowColumn function that disables a menu for a particular widget
#include <Xm/RowColumn.h> void XmRemoveFromPostFromList Widget menuWidget post_from_widget
XmRemoveFromPostFromList makes a Popup or Pulldown menu no longer accessible from a widget. This function does not destroy a menu, or deallocate the memory associated with it. It simply removes the widget from the menu's list of widgets permitted to post that menu.
If the menu argument refers to a Popup menu, the event handlers are removed from the post_from_widget widget. If the argument refers to a Pulldown menu, its ID is removed from the XmNsubMenuId of the specified post_from_widget. Also, if the menu is a Pulldown menu, the post_from_widget widget must be either a CascadeButton or a CascadeButtonGadget.
For a complete definition of RowColumn and its associated resources, see XmRowColumn (3).
XmAddToPostFromList (3), XmGetPostedFromWidget (3), and XmRowColumn (3).