[Qgis-developer] small note about PyQt

[Tim Sutton]

Hi

Right. It was based on Aarons previous reports of incompatibility
between Qt4.3.2 and PyQt4.3.1 that I said this. If I understood Jef
propertly, Qt 4.3.2 seemed to work fine with PyQT4.3.1 under
MSVC.....what can I say - its all a bit confusing :-)

Regards

Tim

2007/11/11, Aaron Racicot <aaronr at z-pulley.com>:
> Martin,
>
> Just a few notes from personal experience... not sure if they are just
> related to the tests I did or indicative of inherent incompatibilities but:
>
> 1) I have tested QT4.3.2 with PyQt4.3.1 and SIP 4.7 on both Win and Linux,
> all built from source and had issues.  For me I have never been able to get
> a QT4.3.2 build to work with PyQt4.3.1.  Again, maybe that is just me, but I
> have tried and failed.
>
> 2) The Win installer of PyQt from Riverbank (by far the easiest way to
> install for most) is built with the Microsoft compilers and is not
> compatible with the MingW built versions of QT or QGIS in general.  That is
> why Tisham includes the pyqt4 with the win installer now (a MingW version of
> pyqt4).  If you have the Riverbank version already installed it will not
> work without writing over the PyQt4 stuff in site-packages with the MingW
> version.
>
> I have not tried any of this in about a month because it is quite a time
> sink to try and deal with all of these installs and testing.  Right now the
> only combo that I am happy with and know works on all architectures is
> QT4.3.1, PyQt4.3.1 and SIP4.7.  That is what the release was built with and
> what I am using currently.
>
> I would love to hear others experience getting QT4.3.2 to work with the
> python bindings...
>
> A
>
> +----------------------------------------+
>  Aaron Racicot - GIS Programmer
>  360.221.2441 - aaronr at z-pulley.com
> +----------------------------------------+
>  z - p u l l e y
>  pobox 1614
>  langley wa 98260
>  www.reprojected.com
> +----------------------------------------+
>
> -----Original Message-----
> From: qgis-developer-bounces at lists.qgis.org
> [mailto:qgis-developer-bounces at lists.qgis.org] On Behalf Of Martin Dobias
> Sent: Saturday, November 10, 2007 3:40 AM
> To: QGIS-dev
> Subject: [Qgis-developer] small note about PyQt
>
> from IRC logs:
>
> 13:12:25        timlinux:        FrankW: dont get qt 4.3.2 yet because last
> I
> checked qt 4.3.2 doesnt have pyqt support yet
> 13:12:38        :       * FrankW sighs.
> 13:12:47        timlinux:       so if you want to plunk with pygis stuff you
> should get 4.3.1
> 13:13:12        timlinux:       lets check if the bindings have been updated
> for qt 4.3.2
> 13:13:24        PeteE:  timlinux: I still think you need to be able to
> stretch the data befor appling the color ramp, cause Marco build the
> color ramp from the data type..
> 13:13:45        FrankW:         Are you serious that pyqt works with 4.3.1
> but not
> 4.3.2? I'd be happy to get a basic qgis up and running and showing
> rasters.
> 13:14:13        timlinux:       right then go ahead with 4.3.2 - python
> bindings
> will catch up
> 13:14:34        timlinux:       python qt bindings are not a trolltech
> product
> but a third party
>
> This is not true. Bugfix releases of Qt - e.g. 4.3.1 and 4.3.2 are
> completely binary compatible between each other, so there's no need to
> for updated PyQt for them. Moreover, every 4.x version just adds new
> API and keeps binary compatibility. This means that if you should be
> able to shuffle versions of Qt and PyQt: if recent PyQt detects that
> you have older version of Qt it will just skip newer API when
> compiling bindings. Also, when you have older PyQt and newer version
> of Qt with some API additions, you can compile them as well...
>
> Martin
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-- 
Tim Sutton
QGIS Project Steering Committee Member - Release  Manager
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