Graphics

   Rect gdiText(507, 636, 6, 7);
   Rect rctOne(512, 684, 20, 17);
   Rect rctTwo(652, 220, 47, 9);
 
   Region gdiRegion;
   gdiRegion.MakeEmpty();
 
   gdiRegion.Union(rctOne);
   gdiRegion.Union(rctTwo);
 
   gdiRegion.IsVisible(gdiText);
 
// Uncomment this code to draw the region in a window 
//   Graphics DstGraphics(*this);
//   SolidBrush blueBrush(Color(255, 0, 0, 255));
//   SolidBrush greenBrush(Color(255, 0, 255, 0));
//
//   // Draw the region 
//   DstGraphics.FillRegion(&blueBrush, &gdiRegion);
// 
//   // Draw the hit test rect 
//   gdiRegion.MakeEmpty();
//   gdiRegion.Union(gdiText);
//   DstGraphics.FillRegion(&greenBrush, &gdiRegion);