[Qt-interest] custom widgets and OpenGL

[Tyler Daniel]

Hi all, I'm looking for some advice on how best to implement a custom widget for a simple OGL scene.

I have have several ogl windows displaying simple scenes, and need to implement a manipulation widget with a few different active areas ("handles").

There are two decisions to be made:

 1) use QGraphicsView/QGraphicsScene or just subclass GLWidget
 2) implement the widget by subclassing some Qt class, or grab mouse/keyboard events and do it all manually.

I have a simple test going now using QGraphicsView/Scene, as it seemed to be the recommended setup.  OTOH, the simplicity of subclassing QGLWidget is appealing, as I don't need all the "item" functionality.

So my questions are:

 1) recommendations for a basic approach?  I'm new to Qt and don't have a good mental picture yet of what all is available.

 2) anyone know of any reasons to not use a QGLWIdget (subclass) as a window?  I've read that there have been problems with full-screen in the past.  In a simple test here on Win7 it seems to work ok if I have two monitors attached.  With only one monitor I get brief flickering to black when switching windows...

3) if I go the QGLWidget subclass route, would it be easy to add in Qt widgets / text rendering later by creating a QPainter, or something like that?

Any advice greatly appreciated!

Tyler