[Qgis-developer] data provider in a custom app

Denis Rouzaud denis.rouzaud at gmail.com
Thu Jan 23 05:58:30 PST 2014

Hi all,

I am trying to do a custom application using QGIS libs and I have 
trouble to use data providers (i.e. spatialite).

In my application doing, QgsProviderRegistry::instance()->pluginList() 
returns " No data provider plugins are available. No vector layers can 
be loaded".

Then of course, trying to create a new db as it is done on 
QgsNewSpatialiteLayerDialog is impossible ( 
QgsProviderRegistry::instance()->library( "spatialite" );  )
and loading layers with
QgsVectorLayer* vl = new QgsVectorLayer( "dbname='path_to_sqlite_file' 
table='mytable'' (geometry) sql=", "layername", "spatialite" );

I believe I am missing something fundamental here, but I have no idea what.

If anybody has a lead, thanks a lot.



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