[vtk-developers] Changing viewport during runtime

[mailing-list at gmx.de]

Hey,
 
I'm using vtkImageViewer2 and want to change the viewport. Setting the
size with vtkImageViewer->GetRenderer()->SetViewPort(....) for the
first time is not the problem but if I want to change it later
my program is crashing.
I tried DrawOff setting the size and DrawOn, Disable and Enable
the interaction too but without any success.
In a normal OpenGL application a don't have this problem
and being able changing the viewport without crashing
the program but I guess this happen because of the
running rendering loop.

So maybe someone has a hint or good advice how to solve this
problem.

Thanks in advanced

Frank