[vtkusers] QVTKWidget avoid transparent background when rendering

[Trystan Louboutin]

I am waking up this thread because I am facing the same issue on a
multiple-pages app written in C++.

I tried the same trick on all QTKWidgets but does not change anything, I
still see the old background while rendering...

Does anyone has a small code snippet or example that explain more how to
fix this ?

Thanks.

2011-08-19 18:10 GMT+02:00 Jothy <jothybasu at gmail.com>:

> Thanks it works!
>
> You need to add the renderer first before calling show().
>
> Jothy
>
>
> On Fri, Aug 19, 2011 at 5:00 PM, Clinton Stimpson <clinton at elemtech.com>
> wrote:
>
>> On Friday, August 19, 2011 02:50:06 am Doria David wrote:
>> > Some strange behaviors occurs especially on QVTKWidget: when I show a
>> > QVTKWidget with a 3D volume, for example, the widget are
>> > shown transparent, showing the contents of the windows that are behind,
>> > for example a WordPad window until it is completely rendered. How can I
>> > avoid this strange behaviors ? (Ideally a black background instead of
>> > showing the contents of the windows that are behind) Thank you.
>>
>> Can you do QVTKWidget::show(), a Render() to clear the background, then
>> add
>> the volume and render afterwards?  The background is disabled for
>> QVTKWidget
>> to avoid a flickering issue.
>>
>> --
>> Clinton Stimpson
>> Elemental Technologies, Inc
>> Computational Simulation Software, LLC
>> www.csimsoft.com
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>
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