showingProperty

Set to true, after the button is clicked, and before the PopupMenu is displayed. It is reset to false when the PopupMenu is closed.

Note, it is often easier to use onShowing rather than listening to this property.

Applications may listen to this, and adjust items as required.

History. onShowing was added later than showingProperty, but we keep this for backwards compatibility. Also, showingProperty could be used to listen for when the menu is closed.