How to use RtTimer*

Hello,

Can anyone give me a simple but complete source code (in C) to see how to
use RtTimerCreate() and other RtTimer* function?

I really don’t know how to use these function.My OS is QNX rtp v6.1. I have
included the header file, but the linker give me a error “unrefferenced to
function “RtTimerCreate()”” and so on.

Thnaks a lot.