Function RouteFileCreate(filename: string; numfields: integer): integer;
Use this function to create a new GIS polyline file from scratch. The file is generated with the same file type as specified in property GISformat and the filename supplied is the full filename, including directory path, but excluding file extension.
Numfields parameter is a positive number >0 with the number of attribute fields.
This set of functions work at a rather low level, so care should be taken to use the functions properly, or you may experience unusable output files.
The last part of Sample code shows an example on how to use it.
Possible error codes: -10 -30 -31 -40
ActiveX / VCL / CLX component: RWcalc