[Qgis-user] Problem refreshing map canvas with pyqgis

[PIERRE Sylvain]

May-be you’d better show first the window, load the layer and refresh the canvas NOT the window

Sylvain




De : qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] De la part de Sylvie Perdriel
Envoyé : jeudi 20 mars 2014 14:24
À : qgis-user at lists.osgeo.org
Objet : [Qgis-user] Problem refreshing map canvas with pyqgis

Hello Every Body,

I’d like to develop a standalone application for air pollution modeling based on pyqgis. I installed QGIs version 2.2 on windows 7 64bits from osgeo installer and my development platform is Eclispe/pydev.
As a first step, I’m trying to load a shapefile and plot it on a qgsmapcanvas (see attached python code) : the shapefile is properly  loaded but I can see it plotted only after minimizing the window and restoring it. I have tried to add repaint(), refresh() calls on the qgsmapcanvas or the window without any success. I must surely miss something simple and would appreciate some help if possible.
Thank you in advanced and best regards,

Sylvie

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