Note: [Get] The getting region is a copy of the current region. [Set] Only a copy of the setting region is used. The region itself can be seted for any number of other device contexts or it can be deleted.
To remove a device-context's clipping region, specify a IntPtr.Zero region handle.
The coordinate of region will not be effected by current origin of page space.
Target Platforms: 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