NAME
	  glXGetContextIDEXT - get the XID for a context.


     C SPECIFICATION
	  GLXContextID glXGetContextIDEXT( const GLXContext ctx	)


     PARAMETERS
	  ctx  Specifies a GLX rendering context.


     DESCRIPTION
	  glXGetContextIDEXT returns the XID associated	with a
	  GLXContext.

	  No round trip	is forced to the server; unlike	most X calls
	  that return a	value, glXGetContextIDEXT does not flush any
	  pending events.

	  glXGetContextIDEXT is	part of	the EXT_import_context
	  extension, not part of the core GLX command set. If
	  GLX_EXT_import_context is included in	the string returned by
	  glXQueryExtensionsString, when called	with argument
	  GLX_EXTENSIONS, extension EXT_import_context is supported.


     ERRORS
	  GLXBadContext	is generated if	ctx does not refer to a	valid
	  context.


     SEE ALSO
	  glXCreateContext, glXQueryVersion, glXQueryExtensionsString