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.
menu Specifies the widget ID of a the Popup or Pulldown menu to be made inaccessible from the
post_from_widget widget.
post_from_widget
Specifies the widget ID of the widget which can no longer post the menu referred to by the menu
argument..
For a complete definition of RowColumn and its associated resources, see XmRowColumn(3).