-    AllocExclusive();
-
-    //
-    // If ref count is 1, that means it's 'ours' anyway so no action.
-    //
-    RECTL                           vRect;
-
-    vRect.xLeft   = x;
-    vRect.xRight  = x + vWidth;
-    vRect.yBottom = y;
-    vRect.yTop    = y + vHeight;
-
-    HRGN                            hRgn = ::GpiCreateRegion( ((wxRegionRefData*)m_refData)->m_hPS
-                                                             ,1
-                                                             ,&vRect
-                                                            );
-    LONG                            lMode = 0L;
-
-    switch (eOp)
-    {
-        case wxRGN_AND:
-            lMode = CRGN_AND;
-            break;
-
-        case wxRGN_OR:
-            lMode = CRGN_OR;
-            break;
-
-        case wxRGN_XOR:
-            lMode = CRGN_XOR;
-            break;
-
-        case wxRGN_DIFF:
-            lMode = CRGN_DIFF;
-            break;
-
-        case wxRGN_COPY:
-        default:
-            lMode = CRGN_COPY;
-            break;
-    }
-    bool                            bSuccess = ::GpiCombineRegion( ((wxRegionRefData*)m_refData)->m_hPS
-                                                                  ,M_REGION
-                                                                  ,M_REGION
-                                                                  ,hRgn
-                                                                  ,lMode
-                                                                 );
-    ::GpiDestroyRegion ( ((wxRegionRefData*)m_refData)->m_hPS
-                        ,hRgn
-                       );
-
-    return bSuccess;
+    return Combine(wxRegion(x, y, vWidth, vHeight), eOp);