where can I download device.h source code of gl/device.h

Sameple code needs this, but I don’t know where I can find it.
I installed Opengl SDK but there is no device.h.
My visual studio folder does not have it either.

Hmm after a quick google it seems this may be an SGI feature and is probably related to i/o.

It is not required for OpenGL programming AFAIK, delete it ans see what the compiler complains is missing.

If you’re just learning then porting code from another system is not the best start, there’s plenty of sample code out there.l An easier port may also be to take an existing demo and graft just the OpenGL parts into it.