title: broken image paths using pyside and QtDesigner
body: <p>I'm styling some checkboxes in QtDesigner with some custom background images but I'm finding that when I load the .ui file in pyside, the images don't show up. Presumably there is a path problem. Below is an image of my file structure and the Python script that calls the .ui file is test.py. </p>
  
  <p><img src="https://i.stack.imgur.com/lCeEa.png" alt="file structure"></p>
  
  <p>Also here is the contents of images.qrc</p>
  
  <pre><code>&lt;RCC&gt;
    &lt;qresource&gt;
      &lt;file&gt;B_active.png&lt;/file&gt;
      &lt;file&gt;Button_down_icon.png&lt;/file&gt;
      &lt;file&gt;Button_up_icon.png&lt;/file&gt;
      &lt;file&gt;B_inactive.png&lt;/file&gt;
      &lt;file&gt;A_inactive.png&lt;/file&gt;
      &lt;file&gt;A_active.png&lt;/file&gt;
      &lt;file&gt;R_icon.png&lt;/file&gt;
      &lt;file&gt;toolbar_bg.png&lt;/file&gt;
    &lt;/qresource&gt;
  &lt;/RCC&gt;
  </code></pre>
  
  <p>and also the style that references the images:</p>
  
  <pre><code>#A_button_grp QRadioButton{
      background-image: url(:/A_inactive.png);
  }
  #A_button_grp QRadioButton:checked{
      background-image: url(:/A_active.png);
  }
  </code></pre>
  
  <p>What should I be doing differently here?</p>