title: Triggering PaintEvent in a "hidden" QGLWidget without a layout?
body: <p>I have a QGLWidget that shares context with 5 other widgets that can change layouts and locations dynamically. This shared widget is something that I dont want to be shown because it doesnt fit in anywhere. The only way I can use it, however, is by doing a "static" one time VBO generation in its initializeGL().</p>
  
  <p>How do I use its paintEvent as normal with this shared widget not being attached to a layout or visible in any way?</p>