[vtkusers] QVTKWidget only partially redrawing itself on win7 without AERO.

[Alex Malyushytskyy]

Problem on stable release of vtk 5.8.0

My application displays splash screen  while model is drawn.
When splash screen is gone and user starts interaction with model,
only part of the QVTKWidget is displaying correct picture,
most area which was not  covered by splash screen remains unchanged
(has whatever it displayed before interaction started).
If QVTKWidget is minimized/maximized it fixes the problem.

If AERO is on everything works as expected.
vtk version 4.* did not have such problem.

It seems any drawing which happens when QVTKWidget widget is
covered(not only to the case of splashscreen)
leeds to such nasty behaviour.

This makes vtk unusable on win 7 since I can't inforce user to have
AERO on, not even counting that some computers might not be able to
support it phisically.

It was an old  conversation about related topic at:
http://vtk.1045678.n5.nabble.com/Problem-with-QVTKWidget-not-expanding-in-win7-td4533383.html

Even though it was stated that problem should be fixed in 5.8., it
still remains.

Could anybody point which changes should be made to fix a problem and
is there a way to push patch that problem finally is fixed in an
official version?

Regards,

Alex