.NET Framework 4.6 and 4.5
The ToolTip type exposes the following members.
|Disposed||Occurs when the component is disposed by a call to the Dispose method. (Inherited from Component.)|
|Draw||Occurs when the ToolTip is drawn and the OwnerDraw property is set to true and the IsBalloon property is false.|
|Popup||Occurs before a ToolTip is initially displayed. This is the default event for the ToolTip class.|