Ok, I forgot to include the file sds.lib, thanks u

Hello. I need help to compile a program SDS. I have IntelliCAD 4 PE+ and IntelliCAD 6.1 PE+, I don't find possible to compile the examples that have in SDS, I am using Microsoft Visual C++ 6. I use the file INVOKE.MAK to make the compilation and it gives me the following errors. --------------------...