5.6.5 16 bits texel format

I have problem to define a texture with texels of GL_UNSIGNED_SHORT_5_6_5 format.
Don’t have a definition for this constant on OpenGL 1.1 for windows NT.
Can someone help me?

Check out & use the header “glext.h” available from nVidia’s website (included with most of the demos) or elsewhere… it defines this pixel format for you, though it may not be useful to you if you only have OpenGL 1.1.