I'm writing a test program with OSG in QT4 based windowing system.

 

Here's what I did:

         I loaded a scene, it showed well.

         I resized the QGLWidget using a QSplitter, it acts well.

        But after I drag the splitter to the very left to resize the
QGLWidget to zero width, and then I drag it back, the scene disappears, I
tracked down in debugging mode, the scene is still in the widget, but why it
didn't show?

 

Could anyone please give me some clue, it's driving me crazy.

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