- WindowRef theWindow = GetControlOwner(inControl) ;
- RgnHandle updateRgn = NewRgn() ;
-#if TARGET_CARBON
- GetWindowRegion( theWindow , kWindowUpdateRgn, updateRgn ) ;
-#else
- GetWindowUpdateRgn( theWindow , updateRgn ) ;
-#endif
- Point zero = { 0 , 0 } ;
- LocalToGlobal( &zero ) ;
- OffsetRgn( updateRgn , -zero.h , -zero.v ) ;