Queries context information
C bindings library: libGL.a
int glXQueryContextInfoEXT(Display *dpy,
GLXContext ctx,
int attribute,
int *value)
The glXQueryContextInfoEXT subroutine returns the the visual id, screen number, and share list of ctx. This call may cause a round trip to the server.
The glXQueryContextInfoEXT subroutine 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.
| 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. |
GLXBadContext is generated if ctx does not refer to a valid context.
The glXCreateContext subroutine, glXQueryVersion subroutine, glXQueryExtensionsString subroutine.