[vtkusers] Problem with QVTKWidget not expanding in win7.

[Chuck Lloyd]

Clinton,

Thanks for the suggestion. I added the line but it did not work.
I don't think you can disable the backing store for a widget based
on tracing through the qt widget repaint function. It looks like it
is hard coded for the OS.

Ironically, I already had Aero off. When I turned it on, the problem
went away. So to correct my previous post. The problem only
happens for me with windows7 and Aero off.

Unfortunately this only fixed the problem for my simplest test program.
When I add a vtkContourWidget to the Window, it still behaves the same
way. I'll see if I can get it down to a simple test case again.

Chuck

On Wed, Jun 29, 2011 at 10:36 AM, Clinton Stimpson <clinton at elemtech.com>wrote:

>
> I've heard reports of this too.  How easily can you reproduce this?
> Can you try adding a line to see if it makes a difference?
>
>    m_vtkWidget = new QVTKWidget( ui->displayWidget, QFlag(0));
>    m_vtkWidget->setAttribute(Qt::WA_NoSystemBackground);
>
> Does turning Aero on/off make a difference?
> Does substituting QVTKWidget for QVTKWidget2 make a difference?
>
> I'd like to see a solution to this problem, but am unable to reproduce it.
>
> Clint
>
> On Tuesday, June 28, 2011 03:18:16 pm Chuck Lloyd wrote:
> > I've seen a few posts about problems with QVTKWidget and resizing
> > but none of the solutions seem to fix this problem.
> >
> > I don't see this problem with windowsXP.
> >
> > On win7 when the window is made larger, it looks like the renderer
> > simply stops updating. It seems to get key events, because if I
> > switch to wireframe display (w) and then shrink the window,
> > the first update shows a wireframe model.
> >
> > I'm using Qt 4.7.2 and VTK 5.6.1.
> >
> > Is anyone still using QVTKWidget or are people moving to QVTKWidget2?
> >
> > Links to pastebin of the code below:
> >
> > main.cpp        http://pastebin.com/QnBpaaSN
> > mainwindow.cpp  http://pastebin.com/yVMyNbnm
> > mainwindow.h    http://pastebin.com/Y2ZNTmk8
> > mainwindow.ui   http://pastebin.com/syRzpBFB
> > CMakeLists.txt  http://pastebin.com/E2ZwsCQ0
> >
> > Chuck
>
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