I have a custom entity inherit from AcDbPolyline,it works fine when the dbx and arx file load.but when you save the file and open it without load those two files,the proxy information dialog show and select show proxy option,the proxy entity didn't show.but when you use CTRL+A to select all,it said the proxy entity has been selected.If I choose to inherit from AcDbEntity,everything is ok.why?
Solved! Go to Solution.
AcDbPolyline does not draw proxy graphics for derived classes, at least in earlier versions of AutoCAD. You can override the AcDbEntity::saveAs() method to draw proxy graphics for your object.