+WXLRESULT
+wxRadioBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+ if ( nMsg == WM_PRINTCLIENT )
+ {
+ // we have to process WM_PRINTCLIENT ourselves as otherwise the radio
+ // buttons background would never be drawn unless we have a parent with
+ // non default background
+
+ // so check first if we have one
+ if ( !HandlePrintClient((WXHDC)wParam) )
+ {
+ // no, we don't, erase the background ourselves (don't use our own
+ // colour as with static box, see comments there)
+ wxBrush brush(GetParent()->GetBackgroundColour());
+ wxFillRect(GetHwnd(), (HDC)wParam, GetHbrushOf(brush));
+ }
+
+ return 0;
+ }
+ // FIXME: Without this, the radiobox corrupts other controls as it moves
+ // in a dynamic layout. Refreshing causes flicker, but it's better than
+ // leaving droppings. Note that for some reason, wxStaticBox doesn't need
+ // this (perhaps because it has no real children?)
+ else if (nMsg == WM_MOVE)
+ {
+ WXLRESULT res = wxControl::MSWWindowProc(nMsg, wParam, lParam);
+ wxRect rect = GetRect();
+ GetParent()->Refresh(true, & rect);
+ return res;
+ }
+
+ return wxStaticBox::MSWWindowProc(nMsg, wParam, lParam);
+}
+