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

NAME    [Toc]    [Back]

     glXQueryContext - query context information

C SPECIFICATION    [Toc]    [Back]

     int glXQueryContext( 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 that a context parameter should be retrieved.	 Must

     value	Contains the return value for attribute.

DESCRIPTION    [Toc]    [Back]

     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

     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    [Toc]    [Back]

     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    [Toc]    [Back]

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

SEE ALSO    [Toc]    [Back]

     glXCreateNewContext, glXGetCurrentContext,	glXQueryVersion,

									PPPPaaaaggggeeee 1111
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