+// methods for drawing the sizers in a visible way
+#ifdef __WXDEBUG__
+
+static void DrawSizers(wxWindowBase *win);
+
+static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
+{
+ wxClientDC dc((wxWindow *)win);
+ dc.SetPen(*wxRED_PEN);
+ dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
+ dc.DrawRectangle(rect.Deflate(1, 1));
+}
+
+static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
+{
+ const wxSizerItemList& items = sizer->GetChildren();
+ for ( wxSizerItemList::const_iterator i = items.begin(),
+ end = items.end();
+ i != end;
+ ++i )
+ {
+ wxSizerItem *item = *i;
+ if ( item->IsSizer() )
+ {
+ DrawBorder(win, item->GetRect().Deflate(2));
+ DrawSizer(win, item->GetSizer());
+ }
+ else if ( item->IsSpacer() )
+ {
+ DrawBorder(win, item->GetRect().Deflate(2), true);
+ }
+ else if ( item->IsWindow() )
+ {
+ DrawSizers(item->GetWindow());
+ }
+ }
+}
+
+static void DrawSizers(wxWindowBase *win)
+{
+ wxSizer *sizer = win->GetSizer();
+ if ( sizer )
+ {
+ DrawBorder(win, win->GetClientSize());
+ DrawSizer(win, sizer);
+ }
+ else // no sizer, still recurse into the children
+ {
+ const wxWindowList& children = win->GetChildren();
+ for ( wxWindowList::const_iterator i = children.begin(),
+ end = children.end();
+ i != end;
+ ++i )
+ {
+ DrawSizers(*i);
+ }
+ }
+}
+
+#endif // __WXDEBUG__
+
+// process special middle clicks