title: wxPython checkbox true or false
body: <p>So let's say that I have a checkbox in wxPython:</p>
  
  <pre><code>cb1 = wx.CheckBox(panelWX, label='TIME', pos=(20, 20))
  cb1.SetValue(False)
  </code></pre>
  
  <p>Is there a simple way I could check to see whether it has changed to true?
  Like this maybe?</p>
  
  <pre><code>if cb1.SetValue == True:
  </code></pre>
  
  <p>And from that point append something from the action of it being true?
  Like so:</p>
  
  <pre><code>selectionSEM1.append('Time')
  </code></pre>