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## 1.3 API Version 2

In response to feedback from the original version of GLUT, GLUT API version 2 was developed. Additions to the original GLUT API version 1 are:

- Support for requesting stereo and multisample windows.
- New routines to query support for and provide callbacks for sophisticated input devices: the Spaceball, tablet, and dial & button box.
- New routine to register a callback for keyboard function and directional keys. In version 1, only ASCII characters could be generated.
- New queries for stereo, multisampling, and elapsed time.
- New routine to ease querying for OpenGL extension support.

GLUT API version 2 is completely compatible with version 1 of the API.

Next: 1.4 API Version 3 Up: 1 Introduction Previous: 1.2 Design Philosophy