Le 27/03/2023 à 10:06, Alessandro Pasotti via QGIS-Developer a écrit :
Hi,

QGIS is using the GDAL/OGR library to read the shapefiles.
which uses shapelib

On Mon, Mar 27, 2023 at 9:51 AM 余 绍健 via QGIS-Developer
<qgis-developer@lists.osgeo.org> wrote:
Dear All,
   Sorry to interrupt, I'm newer to QGIS, whe I use QIGS, I find that it is so 
quick for QGIS to parse shapefile even it is a very big file, I try to decode 
the file by my own with shapelib library, but the result is disappointed, I try 
to learn it by myself with QGIS source code but failed, so anyone can help 
point the entry of  decoding process?

Thanks.
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