Gets a value that declares whether the property is being animated.
Assembly: PresentationFramework (in PresentationFramework.dll)
For any property that is currently being animated, the source reported by BaseValueSource is not immediately relevant, because the animation operates at higher dependency property precedence than the base value. For more information about precedence and animations, see Dependency Property Value Precedence.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2