Assembly: PresentationFramework (in PresentationFramework.dll)
The ToolTipClosing event occurs immediately before a tooltip closes.
This field registers the behavior of the event for classes that use this service. The FrameworkElement and FrameworkContentElement classes both implement the ToolTipService and expose this event through the common language runtime (CLR) accessors FrameworkElement.ToolTipClosing and FrameworkContentElement.ToolTipClosing.
The following example shows how to set an event handler for the ToolTipClosing event. In this case, the event handler is actually for FrameworkElement.ToolTipClosing, because the Ellipse where the handler is attached is a derived class of FrameworkElement.