opengl Extension problem!!!

i am a beginner to opengl, i have no idea how to use opengl extension. Can anyone show me in detail how to use it. Any header file needed for GL_KTX_buffer_region or WGL_ARB_buffer_region extension, and PFNGLBUFFERREGIONENABLED ?

[This message has been edited by chengseesin (edited 02-13-2003).]

Either search the discussion board archives for “extensions” or click here
and you may also want to get the latest “glext.h” header file from NVidia which has all of the latest extension info if I’m not mistaken.

All official extension info can be found at the OpenGL Extension Registry and I recommend to take a look at it first.
If you want to use very recent extensions (say < 6 months) you could take a look at or for vendor-specific extensions.