unresolved symbol for glTexImage3D

hi all
I tried to use 3D texture in my app but I’ve got this error :
“error LNK2001: unresolved external symbol _glTexImage3D”.
I use visual 2008.

Well I surely do not have the correct ogl version to use 3D texture, but I have updated my drivers, and 3D textures are pretty old no ?!

So how to solve this problem ?
thank you

ok I think I have the answer
glTexture3D is an extension and I must get the function pointer with a glGetProcAdress function
“glTexImage3D = (PFNGLTEXIMAGE3DPROC) wglGetProcAddress(“glTexImage3D”);”

sorry for the post

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