Represents the method that will handle routed event that occur when a tooltip opens and closes.
Assembly: PresentationFramework (in PresentationFramework.dll)
'Declaration Public Delegate Sub ToolTipEventHandler ( _ sender As Object, _ e As ToolTipEventArgs _ ) 'Usage Dim instance As New ToolTipEventHandler(AddressOf HandlerMethod)
When a tooltip opens and closes, this delegate provides an event handler. The element that specifies the tooltip inherits from either FrameworkElement or FrameworkContentElement. Therefore, open and close events exist on both of these classes. The following table lists the events that use this event handler.
Events that occur when a tooltip opens
Events that occur when a tooltip closes
These events are registered by the ToolTipService class using the ToolTipOpeningEvent and ToolTipClosingEvent fields, but the ToolTipService class does not expose these events on itself (attached or otherwise). The FrameworkElement and FrameworkContentElement classes both implement the ToolTipService and expose this event by defining the events in the previous table, copying the ToolTipService fields to create new routed event identifiers that exist on the FrameworkElement and FrameworkContentElement classes.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.