title: Cannot move Matplotlib plot window and exit it using red X button
body: <p>I'm running <code>Python v3.5</code> and <code>matplotlib v1.4.3</code> on <code>Windows 10 Home</code>. Up to recently, I write the python script using <code>matplotlib</code> with <code>PyQt</code> GUI. The '<code>plt.show()</code>' code will be written in another module not <code>__main__</code>. When I run this code, <code>Matplotlib figure</code> cannot be moved and exit using red button X at the top of the right side of figure. Strangely, The chart is shown and It really does work well. </p>
  
  <p><a href="https://i.stack.imgur.com/vr3UD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vr3UD.png" alt="Matplotlib Plot"></a></p>
  
  <p>Why does this symptom happens? and How can I revise it?</p>