gtk:menu-button-popover (object)

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

Accessor of the popover slot of the gtk:menu-button class. The gtk:menu-button-align-widget function returns the popover that pops out of the button. If the button is not using a popover, this function returns nil. The (setf gtk:menu-button-align-widget) function sets the popover that will be popped up when the menu button is clicked, or nil to 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.