glXQueryContextInfoEXT

glXQueryContextInfoEXT: query context information.

C Specification | Parameters | Description | Errors | See Also

C Specification

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

Parameters

dpy: Specifies the connection to the X server.
ctx: Specifies a GLX rendering context.
attribute: The visual ID that the context was created with.
value: The X screen the the context was created for.

Description

glXQueryContextInfoEXT returns the the visual id, screen number, and share list of ctx. This call may cause a round trip to the server.

glXQueryContextInfoEXT 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.