Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Occurs when is set to false when a tooltip is not open.
A value of false for the property is not supported for a ToolTip when it is not open. To create a tooltip that stays open until the mouse button is pressed when it is outside the tooltip, you must set both the property and the IsOpen property to true. If is set to false when the tooltip is not open, a NotSupportedException occurs.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)