[Qgis-user] Developing QGIS plugins on Windows

[René Estrella]

Hello, Marco.  Thanks very much for your answer.  I know your explanation
contains very useful information, but I am a newbie in compiling
applications in Unix-like environments.  Maybe you can give me a little more
specific information about building plugins in a Windows environment
(something like step-by-step instructions would be ideal, if you don't
consider it an abuse of your time) or may be you can tell me where can I get
that kind of information?  As a first test, I've been trying to build an
external plugin checked out from the QGIS repository, but the building
instructions for it seemed to be oriented to Unix users.  This is the same
case for the DevelopingPlugins page in the wiki.

Thanks in advance.


Hugentobler  Marco wrote:
> 
> Hi René
> 
> The C++ and Python interfaces should be the same (possibly there may be a
> few 
> exceptions). If your plugin is performance critical and you already know
> C++ 
> then I'd recommend you to write the plugin in C++.
> The development of a C++ plugin is the same on Unix and on windows. If you
> use 
> the QGIS binary package for windows that is compiled with the mingw
> compiler, 
> you need to use the mingw compiler too. Also, you need to install the Qt 
> library for mingw (available at 
> http://trolltech.com/developer/downloads/qt/windows). Then you compile
> your 
> plugin as a dll that is linked with qgis_core.dll and qgis_gui.dll. 
> The plugin documentations may be outdated. You may also have a look at the 
> code of the existing plugins to get an idea how they work.
> 
> A final word on licensing: note that QGIS plugins must be under GPL
> license.
> 
> Regards,
> Marco
> 
> Am Donnerstag 24 April 2008 16:32:31 schrieb René Estrella:
>> Paolo Cavallini wrote:
>> > René Estrella ha scritto:
>> >> I am interested in developing a QGIS plugin using C++ and for the
>> >> Windows platform.  I read some documentation in the QGIS website
>> >> (including the blog
>> >> and wiki) and found information that seems applicable only in
>> Unix-like
>> >> OSs.
>> >> Is there any documentation in the web where I can learn from how to
>> >> develop
>> >> a plugin for the Windows version of QGIS?  Or can you give me an
>> advice
>> >> to
>> >> start learning about plugin development on Windows?
>> >
>> > What are the reasons to write a C++ plugin instead of a python one?
>> > All the best.
>> > pc
>> > --
>> > Paolo Cavallini, see: http://www.faunalia.it/pc
>> > Noi ci troviamo con parecchie difficoltà con NGI http://www.ngi.it/
>> > _______________________________________________
>> > Qgis-user mailing list
>> > Qgis-user at lists.osgeo.org
>> > http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>> Hello Paolo, thanks for your interest.  The plugin I'm thinking of is an
>> application that deals with large amounts of data, so I thought in using
>> C++ because I suppose C++ programs run faster than Python ones (is this
>> right?), which is a desirable feature in this type of applications. 
>> Anyway, I can't proof this at this time.  Also, I have a little more
>> knowledge and experience on C++ programming.  Finally, I have a question:
>> Is the complete QGIS API available for developers of Python plugins (as
>> is
>> the case for C++ plugins) or is there any restriction in the API for
>> Python
>> plugins?  I mean, the QGIS API that developers of QGIS plugins can use in
>> the development process is the same API that is used by developers of C++
>> plugins, or it is a restricted or limited version of it?
>>
>> Regards.
> 
> 
> 
> -- 
> Dr. Marco Hugentobler
> Institute of Cartography
> ETH Zurich
> Technical Advisor QGIS Project Steering Committee
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> 

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