SWI-Prolog -- Get methods

menu_bar <-contains: -> any: Returns the chain of menu_bar<-members popup's
menu_bar <-hor_stretch: -> 0..: Horizontal stretchability. The returned value (1) ensures that, if the containing device (normally a dialog object) is given a layout, the menu_bar is stretched to the right-edge of the window. See also menu_bar->geometry.
menu_bar <-member: name|popup -> popup: When the argument is a popup object, return it if it is a member of this menu_bar. When the argument is a name, return the first popup whose dialog_item<-label equals the argument.
menu_bar <-popup_from_event: event -> popup: Find popup to open from event. This method locates the button on which the event took place and returns the associated popup. Used by menu_bar->event. See also menu_bar->show_popup and menu_bar<-current.