In QCAD, DWG support is not a built-in feature of the core open-source version but is provided through a based on the Open Design Alliance (ODA) Teigha libraries . DWG Plugin Overview
QCAD DWG Pro Importer/Exporter Tagline: Native DWG Read/Write for QCAD – No Conversion Required qcad dwg plugin
.dwg files directly in QCAD without converting them to DXF first..dwg files from QCAD.The plugin offers extensive compatibility with nearly all versions of the DWG format: Read Support: DWG/DXF format versions R2.5 through R32 (2018–2023). Write Support: DWG/DXF format versions R12 through R32 (2018–2023). Performance: commercial plugin In QCAD, DWG support is not