glXQueryContextInfoEXT(3G)  OpenGL Reference - GLX  glXQueryContextInfoEXT(3G)

NAME    [Toc]    [Back]

     glXQueryContextInfoEXT - returns information about	a GLX rendering
     context

C SPECIFICATION    [Toc]    [Back]

     int glXQueryContextInfoEXT( Display *dpy,
				 GLXContext ctx,
				 int attribute,
				 int *value )

PARAMETERS    [Toc]    [Back]

     dpy	Specifies the connection to the	X server.


     ctx	Specifies a GLX	rendering context.


     attribute	Specifies the context attribute	to be returned.

     value	Returns	the requested value.

DESCRIPTION    [Toc]    [Back]

     glXQueryContextInfoEXT returns in value the value of attribute for	ctx;
     it	may cause a round trip to the server.

     attribute is one of the following:

     GLX_SHARE_CONTEXT_EXT XID of the share list context that was specified
			   when	ctx was	created	by calling glXCreateContext or
			   NULL	if ctx is not part of a	share list.

     GLX_VISUAL_ID_EXT	   Visual i.d. for XVisualInfo structure that is
			   associated with ctx.

     GLX_SCREEN_EXT	   Screen number for ctx.

     GLX_FBCONFIG_ID_SGIX  XID of GLXFBConfigSGIX that is associated with ctx.

     glXQueryContextInfoEXT returns an error code if it	fails for any reason;
     otherwise,	zero is	returned.

NOTES    [Toc]    [Back]

     glXQueryContextInfoEXT is part of the EXT_import_context extension.

     GLX_FBCONFIG_ID_SGIX is not a valid attribute unless the SGIX_fbconfig
     extension is supported.





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glXQueryContextInfoEXT(3G)  OpenGL Reference - GLX  glXQueryContextInfoEXT(3G)

ERRORS    [Toc]    [Back]

     glXQueryContextInfoEXT returns GLX_BAD_ATTRIBUTE if attribute is invalid.

     A GLXBadContext error is generated	if ctx is not a	valid rendering
     context.

SEE ALSO    [Toc]    [Back]

     glXCreateContext, glXQueryVersion,	glXQueryExtensionsString


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