Defines constants that specify whether the DismissPopup attached event closes all drop-downs in a chain of drop-downs or only drop-downs that the mouse pointer is not over.
Assembly: System.Windows.Controls.Ribbon (in System.Windows.Controls.Ribbon.dll)
All drop-downs in a chain are closed.
Drop-downs in a chain are closed up to the one that the mouse pointer is over.
Available since 4.5