private void DisposeHandle ()
{
if (nativeRegion != IntPtr.Zero) {
GDIPlus.GdipDeleteRegion (nativeRegion);
nativeRegion = IntPtr.Zero;
}
}
public void ReleaseHrgn (IntPtr regionHandle)
{
if (regionHandle == IntPtr.Zero)
throw new ArgumentNullException ("regionHandle");
Status status = Status.Ok;
if (GDIPlus.RunningOnUnix ()) {
// for libgdiplus HRGN == GpRegion*
status = GDIPlus.GdipDeleteRegion (regionHandle);
} else {
// ... but on Windows HRGN are (old) GDI objects
if (!GDIPlus.DeleteObject (regionHandle))
status = Status.InvalidParameter;
}
GDIPlus.CheckStatus (status);
}