[Qgis-developer] Which compiler should I use to build example code?

[Henri De Feraudy]

The problem does not go away if I comment out "#include <QWidget>"

--- On Mon, 11/2/09, Henri De Feraudy <feraudyh at yahoo.com> wrote:

> From: Henri De Feraudy <feraudyh at yahoo.com>
> Subject: Re: [Qgis-developer] Which compiler should I use to build example code?
> To: qgis-developer at lists.osgeo.org
> Date: Monday, November 2, 2009, 11:14 AM
> Hi
>   I don’t get any visual debugger going but I do get
> a long trace in a command window.  I wont let that stop
> me. I have not changed the code yet appart from the obvious
> path strings .
> 
> The last three lines of the trace are 
> ..\..\..\..\..\src\core\qgsmaprenderer.cpp(424) :
> (QgsMapRenderer::render) Rendering completed in (seconds):
> 0.203
> QApplication::regClass: Registering window class failed.
> (The class exists already)
> QApplication::qAppName: Please instantiate the QApplication
> object first QWidget: Must construct a QApplication before a
> QPaintDevice
> 
> Henri
> 
> --- On Sun, 11/1/09, Mailing Lists <lists at linfiniti.com>
> wrote:
> 
> > From: Mailing Lists <lists at linfiniti.com>
> > Subject: Re: Fw: Re: Fw: Re: [Qgis-developer] Which
> compiler should I use to  build example code?
> > To: "Henri De Feraudy" <feraudyh at yahoo.com>
> > Cc: qgis-developer at lists.osgeo.org
> > Date: Sunday, November 1, 2009, 10:12 PM
> > Hi
> > 
> > On Sun, Nov 1, 2009 at 11:01 PM, Henri De Feraudy
> <feraudyh at yahoo.com>
> > wrote:
> > 
> > 
> > > So, I wonder if the fact that I am using Qt 4.5
> > (rather than 4.3) explains the problem
> > >
> > > program ...\timtut1.exe
> > > file: global::qglobal.cpp
> > > line 2030
> > >
> > > QWidget: Must construct a Qapplication before a
> QPaint
> > device.
> > >
> > 
> > Try removing the QWidget include in main. But
> > probably  you need to
> > step through with the debugger to see what is really
> going
> > on.
> > 
> > BTW I wanted to apologise for my previous 'dont email
> me
> > privately
> > only' message - my cell phone mail client showed me as
> the
> > only
> > recipient but looking at my gmail client I see you
> had
> > indeed sent
> > your reply to the list.
> > 
> > Best
> > 
> > Regards
> > -- 
> > Tim Sutton - QGIS Project Steering Committee Member
> > (Release  Manager)
> > ==============================================
> > Please do not email me off-list with technical
> > support questions. Using the lists will gain
> > more exposure for your issues and the knowledge
> > surrounding your issue will be shared with all.
> > 
> > Visit http://linfiniti.com to find out about:
> >  * QGIS programming and support services
> >  * Mapserver and PostGIS based hosting plans
> >  * FOSS Consulting Services
> > Skype: timlinux
> > Irc: timlinux on #qgis at freenode.net
> > ==============================================
> >
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>