I'm creating an standalone application with QGIS 3.0,I want to add mbtiles data,I use QgsRasterLayer *layer = new QgsRasterLayer(filePath,fileName,"gdal"); but layer->isValid() is false,the error has two messages 1.Cannot open GDAL dataset, "c:\XXXXXX\*.mbtiles" not recognized as a supported file format. 2.Provider is not valid(provider:gdal)
so what's wrong with it
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