1. fixed wxDC::DrawArc() problem with full circles

2. replaced about a dozen occurences of some wxSTIPPLE_MASK_OPAQUE related
   code with a helper class (talk about code bloat...)
3. wxColourDialog parent is set correctly now, other minor fixes there


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7592 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/window.cpp

@@ -1094,7 +1094,10 @@ void wxWindow::DoGetSize(int *x, int *y) const
 {
     HWND hWnd = GetHwnd();
     RECT rect;
-    GetWindowRect(hWnd, &rect);
+    if ( !::GetWindowRect(hWnd, &rect) )
+    {
+        wxLogLastError(_T("GetWindowRect"));
+    }
 
     if ( x )
         *x = rect.right - rect.left;