title: wxPython - adding space around a GridBagSizer on a Panel
body: <p>I have a GridBagSizer (controls) that is placed on a Panel (ctrlPanel) and fitted to it using</p>
  
  <pre><code>controls.Fit(ctrlPanel)
  ctrlPanel.SetSizer(controls)
  </code></pre>
  
  <p>Now the Panel is placed in a BoxSizer</p>
  
  <pre><code>mainSizer = wx.BoxSizer(wx.VERTICAL)
  mainSizer.Add(ctrlPanel, 0, wx.EXPAND|wx.ALL, 10)
  </code></pre>
  
  <p>However, adding the space around the panel in the box (and not the grid on the Panel) does lead to a "dark grey" border around the panel.</p>
  
  <p>Is there a "lege artis" way to add space around the GridBagSizer before it is fitted to the panel? Or do I need to hack empty cells around the filled ones?</p>
  
  <p>Thanks says Woodpicker</p>