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Qt-interest Archive, June 2007
Hi guys, very interesting fact happens to me

Message 1 in thread

I have an application that manipulate openGL surfaces; compiling it using qt 
4.1.0 works fine;
compiling it with 4.3.0 it crashes with such a message:
a lot of

Warning: QWidget::repaint: Recursive repaint detected
Warning: QWidget::repaint: Recursive repaint detected
Warning: QWidget::repaint: Recursive repaint detected
Segmentation fault


Any idea for debugging?

Thanks in advence.

Cheers


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Message 2 in thread

Try putting a break point in the QWidget::repaint code and looking at
the stack to see how its gotten recursive...

Most likely, your calling paint on a child widget directly

Scott

> -----Original Message-----
> From: Fabio Giovagnini [mailto:fabio.giovagnini@xxxxxxxxxxxxxxx]
> Sent: Wednesday, June 06, 2007 11:22 AM
> To: qt-interest@xxxxxxxxxxxxx
> Subject: Hi guys, very interesting fact happens to me
> 
> I have an application that manipulate openGL surfaces; compiling it
using
> qt
> 4.1.0 works fine;
> compiling it with 4.3.0 it crashes with such a message:
> a lot of
> 
> Warning: QWidget::repaint: Recursive repaint detected
> Warning: QWidget::repaint: Recursive repaint detected
> Warning: QWidget::repaint: Recursive repaint detected
> Segmentation fault
> 
> 
> Any idea for debugging?
> 
> Thanks in advence.
> 
> Cheers
> 
> 
> --
> Fabio Giovagnini
> 
> Aurion s.r.l.
> via degli orti 11,
> 40050 Funo di Argelato (BO)
> P.I e C.F.
> 00885711200
> Tel. +39.335.8350919
> Fax +39.051.8659009
> 
> www.aurion-tech.com
> 
> account telefono VoIP skype (www.skype.com):
> aurion.giovagnini
> 
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/

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Message 3 in thread

I'll try and I'll let you know.

Thanks a lot

Alle 20:29, mercoledì 6 giugno 2007, Scott Aron Bloom ha scritto:
> Try putting a break point in the QWidget::repaint code and looking at
> the stack to see how its gotten recursive...
>
> Most likely, your calling paint on a child widget directly
>
> Scott
>
> > -----Original Message-----
> > From: Fabio Giovagnini [mailto:fabio.giovagnini@xxxxxxxxxxxxxxx]
> > Sent: Wednesday, June 06, 2007 11:22 AM
> > To: qt-interest@xxxxxxxxxxxxx
> > Subject: Hi guys, very interesting fact happens to me
> >
> > I have an application that manipulate openGL surfaces; compiling it
>
> using
>
> > qt
> > 4.1.0 works fine;
> > compiling it with 4.3.0 it crashes with such a message:
> > a lot of
> >
> > Warning: QWidget::repaint: Recursive repaint detected
> > Warning: QWidget::repaint: Recursive repaint detected
> > Warning: QWidget::repaint: Recursive repaint detected
> > Segmentation fault
> >
> >
> > Any idea for debugging?
> >
> > Thanks in advence.
> >
> > Cheers
> >
> >
> > --
> > Fabio Giovagnini
> >
> > Aurion s.r.l.
> > via degli orti 11,
> > 40050 Funo di Argelato (BO)
> > P.I e C.F.
> > 00885711200
> > Tel. +39.335.8350919
> > Fax +39.051.8659009
> >
> > www.aurion-tech.com
> >
> > account telefono VoIP skype (www.skype.com):
> > aurion.giovagnini
> >
> > --
> > To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> > "unsubscribe" in the subject or the body.
> > List archive and information: http://lists.trolltech.com/qt-interest/
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> "unsubscribe" in the subject or the body. List archive and information:
> http://lists.trolltech.com/qt-interest/

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Message 4 in thread

On 06.06.07 20:21:48, Fabio Giovagnini wrote:
> I have an application that manipulate openGL surfaces; compiling it using qt 
> 4.1.0 works fine;
> compiling it with 4.3.0 it crashes with such a message:
> a lot of
> 
> Warning: QWidget::repaint: Recursive repaint detected
> Warning: QWidget::repaint: Recursive repaint detected
> Warning: QWidget::repaint: Recursive repaint detected
> Segmentation fault
> 
> 
> Any idea for debugging?

First thing to do would be: run the app in a debugger and when it
crashes produce a backtrace. That way you know where it crashes. Then
step through the problematic function and check the value of the
variables that are used.

Andreas

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