[vtkusers] How to put Qt widgets on top of a VTK OpenGL scene

[Elvis Dowson]

Hi,
         Qt-4.4.3 has recently added support for rendering Qt widgets  
on top of a VTK OpenGL scene. I just downloaded the latest release of  
Qt-4.4.3 and tried it on Mac OS X 10.5.5 and the demo application  
works well, without any problems.

I want to be able to use Qt to render a VTK OpenGL scene, as well as  
utilize this new capability to directly render Qt widgets within the  
VTK rendered OpenGL scene. This will raise the bar for interactive  
applications developed using Qt.

I took a quick look at the QVTKWidget plugin for QtDesigner. It  
subclasses from QtWidget.

The functionality outline above requires that you subclass from  
QtGraphicsView.

I was just wondering if someone who know the QVTKWidget plugin can  
tell me of the implementation used for creating QVTKWidget plugin are  
compatible, i.e. QtWidget can use QtGraphicsView or we can get an  
instance of QtGraphicsView from QtWidget, and use the technique  
outlined in the article below to render Qt Widgets directly into a VTK  
OpenGL scene.  Or  if we need to re-write QVTKPlugin to support this  
capability?

Here is a link to the article and a blog

Accelerate your Widgets with OpenGL

Qt Labs Blogs » Accelerate your widgets with OpenGL

as well as a screenshot



The sample code can be downloaded using the following command

svn checkout svn://labs.trolltech.com/svn/graphics/dojo/modelviewer

Best regards,

Elvis Dowson
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