86       if (ParentWnd->hrgnUpdate != 0)  in IntValidateParents()
267    if (Window->hrgnUpdate != NULL &&  in IntGetNCUpdateRgn()
268        Window->hrgnUpdate != HRGN_WINDOW)  in IntGetNCUpdateRgn()
313 …    if (NtGdiCombineRgn(Window->hrgnUpdate, Window->hrgnUpdate, hRgnWindow, RGN_AND) == NULLREGION)  in IntGetNCUpdateRgn()
315             IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);  in IntGetNCUpdateRgn()
316             GreDeleteObject(Window->hrgnUpdate);  in IntGetNCUpdateRgn()
318             Window->hrgnUpdate = NULL;  in IntGetNCUpdateRgn()
343       return Window->hrgnUpdate;  in IntGetNCUpdateRgn()
375         if ((pWnd->hrgnUpdate == NULL) && (pWnd->state & WNDS_SENDNCPAINT))  in IntSendChildNCPaint()
421          if (Wnd->hrgnUpdate == NULL)  in co_IntPaintWindows()
444                if (Wnd->hrgnUpdate)  in co_IntPaintWindows()
447                                      Wnd->hrgnUpdate,  in co_IntPaintWindows()
524    if ( Wnd->hrgnUpdate != NULL || Wnd->state & WNDS_INTERNALPAINT )  in co_IntUpdateWindows()
526       if (Wnd->hrgnUpdate)  in co_IntUpdateWindows()
538           if (Wnd->hrgnUpdate == NULL)  in co_IntUpdateWindows()
574              ( Child->hrgnUpdate != NULL || Child->state & WNDS_INTERNALPAINT ) )  in co_IntUpdateWindows()
579                if ( Next->hrgnUpdate != NULL || Next->state & WNDS_INTERNALPAINT ) break;  in co_IntUpdateWindows()
609             ( Next->hrgnUpdate != NULL || Next->state & WNDS_INTERNALPAINT) )  in UserUpdateWindows()
629       if ( Parent->hrgnUpdate != NULL || Parent->state & WNDS_INTERNALPAINT ) return;  in UserSyncAndPaintWindows()
748             if (Wnd->hrgnUpdate == NULL)  in IntInvalidateWindows()
750                Wnd->hrgnUpdate = NtGdiCreateRectRgn(0, 0, 0, 0);  in IntInvalidateWindows()
751                IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_PUBLIC);  in IntInvalidateWindows()
754             if (Wnd->hrgnUpdate != HRGN_WINDOW)  in IntInvalidateWindows()
756                RgnUpdate = REGION_LockRgn(Wnd->hrgnUpdate);  in IntInvalidateWindows()
763                      IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);  in IntInvalidateWindows()
764                      GreDeleteObject(Wnd->hrgnUpdate);  in IntInvalidateWindows()
765                      Wnd->hrgnUpdate = NULL;  in IntInvalidateWindows()
799          if (Wnd->hrgnUpdate > HRGN_WINDOW && RgnType != NULLREGION && Rgn > PRGN_WINDOW)  in IntInvalidateWindows()
801              PREGION RgnUpdate = REGION_LockRgn(Wnd->hrgnUpdate);  in IntInvalidateWindows()
810                      IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);  in IntInvalidateWindows()
811                      GreDeleteObject(Wnd->hrgnUpdate);  in IntInvalidateWindows()
812                      Wnd->hrgnUpdate = NULL;  in IntInvalidateWindows()
817          if (Wnd->hrgnUpdate == NULL)  in IntInvalidateWindows()
1027    if (pwnd->hrgnUpdate)  in PaintSuspendedWindow()
1036       if (pwnd->hrgnUpdate > HRGN_WINDOW)  in PaintSuspendedWindow()
1039          type = NtGdiCombineRgn( hrgnTemp, pwnd->hrgnUpdate, 0, RGN_COPY);  in PaintSuspendedWindow()
1128            ( Wnd->hrgnUpdate != NULL ||  in IntIsWindowDirty()
1235       if (!PaintWnd->hrgnUpdate)  in IntGetPaintMessage()
1483                           Window->hrgnUpdate,  in IntBeginPaint()
1497    if (Window->hrgnUpdate != NULL)  in IntBeginPaint()
1500       IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);  in IntBeginPaint()
1502       Window->hrgnUpdate = NULL;  in IntBeginPaint()
1809    if (Window->hrgnUpdate == NULL)  in co_UserGetUpdateRgn()
1818    if (Window->hrgnUpdate == HRGN_WINDOW)  in co_UserGetUpdateRgn()
1842       RegionType = NtGdiCombineRgn(hRgn, hrgnTemp, Window->hrgnUpdate, RGN_AND);  in co_UserGetUpdateRgn()
1878    if (Window->hrgnUpdate == NULL)  in co_UserGetUpdateRect()
1886       if (Window->hrgnUpdate == HRGN_WINDOW)  in co_UserGetUpdateRect()
1893          RegionType = IntGdiGetRgnBox(Window->hrgnUpdate, pRect);  in co_UserGetUpdateRect()
2006    HRGN hrgnUpdate,  in NtUserRedrawWindow()  argument
2055    if (hrgnUpdate > HRGN_WINDOW)  in NtUserRedrawWindow()
2057        RgnUpdate = REGION_LockRgn(hrgnUpdate);  in NtUserRedrawWindow()
2065    else if (hrgnUpdate == HRGN_WINDOW) // Trap it out.  in NtUserRedrawWindow()
2471     if (Window->hrgnUpdate)  in co_UserExcludeUpdateRgn()
2473         if (Window->hrgnUpdate == HRGN_WINDOW)  in co_UserExcludeUpdateRgn()
2500                 NtGdiCombineRgn(hrgn, hrgn, Window->hrgnUpdate, RGN_DIFF);  in co_UserExcludeUpdateRgn()