[vtkusers] Updating render

[Gib Bogle]

Hello,


I have a simple QVTK program that draws a collection of cylinder actors (Qt 4.8.1, VTK 5.10).  The function that updates the actor positions is a Qt slot; on receiving a signal from another thread the function is invoked with the array of new positions.  Everything is working fine, except that the scene does not get updated unless I interact with it (move the mouse).  I don't understand what is needed to force the scene update.  I'm sure it must be something simple.


Please enlighten me.


Thanks

Gib
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