[QGIS-Developer] Qgis > Creating an standalone application

[Tim Sutton]

Hi

These notes are for QGIS 2.x but the process should be similar:

https://github.com/inasafe/inasafe/wiki/Development-under-Windows#create-a-shell-launcher

Hope that helps

Regards

Tim

> On 6 Sep 2019, at 15:35, Trs Bar <barre.tristan at gmail.com> wrote:
> 
> I'm new to GIS but i've already a signifiant experience in development. I work on new project. We're trying to use the power of Qgis to create a GIS tool for our commercial team. QGis is istalled from OSGeo4W (3.8), Python (3.7) and PyQt (from pip) are installed too.
> 
> Correctly set PYTHONPATH :
> 
> set PYTHONPATH=C:\OSGeo4W64\apps\qgis\python
> When i try to run my python script (copied from the official documentation "PyQGIS Developper Cookbook"), we've got an error :
> 
> from qgis.core import *
> 
> # Supply path to qgis install location
> QgsApplication.setPrefixPath("C:\OSGeo4W64\apps\qgis", True)
> 
> # Create a reference to the QgsApplication.  Setting the
> # second argument to False disables the GUI.
> qgs = QgsApplication([], False)
> 
> # Load providers
> qgs.initQgis()
> 
> # Write your code here to load some layers, use processing
> # algorithms, etc.
> 
> # Finally, exitQgis() is called to remove the
> # provider and layer registries from memory
> 
> qgs.exitQgis()
> 
> Erreur :
> ImportError: DLL load failed: %1 n’est pas une application Win32 valide.
> 
> Could you maybe help me ?
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—









Tim Sutton

Co-founder: Kartoza
Ex Project chair: QGIS.org

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