Gets a value that declares whether the per-pixel opacity of the source window content is respected.
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: Not mapped to an xmlns.
By enabling per-pixel opacity, the system no longer draws the non-client area.
The opacity is used when the window is drawn on the desktop (it represents a final rendering step and does not appear as a contributor to property values such as Opacity).
applies only to top-level windows.
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)