glXQueryContext : PyOpenGL 3.1.4 GLX Man Pages

query context information

Signature

glXQueryContext( Display * ( dpy ) , GLXContext ( ctx ) , int ( attribute ) , int * ( value ) )-> int

glXQueryContext( dpy , ctx , attribute , value ) -> <class 'ctypes.c_int'>

Parameters

Variables	Description
dpy	Specifies the connection to the X server.
ctx	Specifies a GLX rendering context.
attribute	Specifies that a context parameter should be retrieved. Must be one of GLX_FBCONFIG_ID , GLX_RENDER_TYPE , or GLX_SCREEN .
value	Contains the return value for attribute .

Description

glXQueryContext sets value to the value of attribute with respect to ctx . attribute may be one of the following:

GLX_FBCONFIG_ID: Returns the XID of the GLXFBConfig associated with ctx .
GLX_RENDER_TYPE: Returns the rendering type supported by ctx .
GLX_SCREEN: Returns the screen number associated with ctx .

Success is returned unless attribute is not a valid GLX context attribute, in which case GLX_BAD_ATTRIBUTE is returned.

This call may cause a round-trip to the server.

Notes

glXQueryContext is available only if the GLX version is 1.3 or greater.

If the GLX version is 1.1 or 1.0, the GL version must be 1.0. If the GLX version is 1.2, then the GL version must be 1.1. If the GLX version is 1.3, then the GL version must be 1.2.

Errors

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

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/ .

glXQueryContext