gtk:menu-button-popover (object)

object -- a gtk:menu-button widget
popover -- a gtk:popover widget, or nil to unset and disable the button

The accessor for the popover slot gets or sets the popover that will be popped up when the menu button is clicked. If the button is not using a popover, this function returns nil. Setting popover to nil dissociate any existing popover and disable the button.

If the menu-model or popup properties are set, those objects are dissociated from the menu button, and those properties are set to nil.