-        dlg = TestDialog(self, -1, "This is a Dialog", size=(350, 200),
-                         #style = wxCAPTION | wxSYSTEM_MENU | wxTHICK_FRAME
-                         style = wx.DEFAULT_DIALOG_STYLE
+        useMetal = False
+        if 'wxMac' in wx.PlatformInfo:
+            useMetal = self.cb.IsChecked()
+            
+        dlg = TestDialog(self, -1, "Sample Dialog", size=(350, 200),
+                         #style=wxCAPTION | wxSYSTEM_MENU | wxTHICK_FRAME,
+                         style=wx.DEFAULT_DIALOG_STYLE,
+                         useMetal=useMetal,