/// <summary> /// Controls call this to leave menu mode. ///</summary> public void PopMenuMode(PresentationSource menuSite) { if (menuSite == null) { throw new ArgumentNullException("menuSite"); } menuSite.VerifyAccess(); if (_menuModeCount <= 0) { throw new InvalidOperationException(); } menuSite.PopMenuMode(); _menuModeCount -= 1; if (0 == _menuModeCount) { EventHandler leaveMenuMode = LeaveMenuMode; if (null != leaveMenuMode) { leaveMenuMode(null, EventArgs.Empty); } } }