1991-2006
Silicon Graphics, Inc.
glXQueryVersion
3G

# glXQueryVersion

return the version numbers of the GLX extension

## C Specification

                    Bool glXQueryVersion
                    Display * dpy
                    int * major
                    int * minor

## Parameters

`dpy`

  Specifies the connection to the X server.

`major`

  Returns the major version number of the GLX server extension.

`minor`

  Returns the minor version number of the GLX server extension.

## Description

`glXQueryVersion` returns the major and minor version numbers of the GLX extension implemented by the server associated with connection `dpy`. Implementations with the same major version number are upward compatible, meaning that the implementation with the higher minor number is a superset of the version with the lower minor number.

`major` and `minor` do not return values if they are specified as `NULL`.

## Errors

`glXQueryVersion` returns `False` if it fails, `True` otherwise.

`major` and `minor` are not updated when `False` is returned.

## See Also

glXQueryExtension

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.