Hello rtcjss,
I personally have never used CVI but I have seen these types of issues before. You are seeing this because our API is not 100% C compatible. It is going to complain about missing typedefs on the enums and structs and maybe a few other things. I think if you addressed this, the CVI compiler would be able to parse our header file without errors. This is just a guess though. Without CVI, I cannot test this.
Regards,
A.J.