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NAME
     glXQueryExtension - indicate whether the  GLX  extension  is
     supported


C SPECIFICATION
     Bool glXQueryExtension( Display *dpy,
                             int *errorBase,
                             int *eventBase )


PARAMETERS
     dpy        Specifies the connection to the X server.

     errorBase  Returns the base error code  of  the  GLX  server
                extension.

     eventBase  Returns the base event code  of  the  GLX  server
                extension.

DESCRIPTION
     glXQueryExtension returns True if the X server of connection
     dpy supports the GLX extension, False otherwise.  If True is
     returned, then errorBase and eventBase return the error base
     and  event  base of the GLX extension.  Otherwise, errorBase
     and eventBase are unchanged.

     errorBase and eventBase do not return  values  if  they  are
     specified as NULL.

NOTES
     eventBase is included for future extensions.  GLX  does  not
     currently define any events.

SEE ALSO
     glXQueryVersion

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