title: Resizing wxPython Widgets
body: <p>How do I change the size of wxPython widget after its creation? I am trying to dynamically change the width of a ComboBoxCtrl widget based on the elements in the popup. For the sake of simplicity lets say we create a button and try to resize it:</p>
  
  <pre><code>btn = wx.Button(self, wx.ID_ANY, 'Start', size=(25,-1))
  btn.SetSize(wx.Size(25,25))
  
  self.Layout()
  </code></pre>
  
  <p>In the above case, the new 25x25 size does not take. I can only get SetSize to work for a panel. I am assuming there is another call I should be using. How can I change the size of widget after creation?</p>