glutSpecialUpFunc

[Obli]

Well, I downloaded a tutorial about alpha volumes and it uses the function above. I don't know what it does so I checked the GLUT specifications, but I didn't find it.

Anyone knows how it works?

I think it is called when a keyboard button is relased, but I'm not sure.

Thanks in advice!

[Rob The Bloke]

yes, glutSpecialFunc() registers keyboard presses that aren't registered using glutKeyboardFunc. These include the Function keys, cursor keys etc. glutSpecialUpFunc() registers the release of these keys.