title: How to make a QLineEdit not editable in Windows
body: <p>I'm using Qt 5.2 and I would like to make a <code>QLineEdit</code> not editable. The problem with this is, that it doesn't appear like it. When using <code>setReadOnly(true)</code> it stays with white background and looks like it is still editable.</p>
  
  <p>If I disable it, then it turns gray and the text also gets a lighter gray. The problem is, that one can not copy the text from it, in a disabled state.</p>
  
  <p>So how can I make a <code>QLineEdit</code> properly non-editable and also make it look like it. In Windows such a control is usually gray, but the text stays black. Of course I could set the style manually, but this means that it is hard-coded and may look wrong on other platforms.</p>