On mercredi 4 avril 2018 11:03:34 CEST weskerjiang at sina.cn wrote: > i download the gdal from osgeo4w,and i write a demo to open mbtiles file,my > code is below > > > QString uri = "c:/test.mbtiles"; > > CPLErrorRest(); You probably lack a call to GDALAllRegister(); here -- Spatialys - Geospatial professional services http://www.spatialys.com