XSaveContext
NAME
XSaveContext, XFindContext, XDeleteContext, XUniqueContext
- associative look-up routines
SYNTAX
int XSaveContext(display, rid, context, data)
Display *display;
XID rid;
XContext context;
XPointer data;
int XFindContext(display, rid, context, data_return)
Display *display;
XID rid;
XContext context;
XPointer *data_return;
int XDeleteContext(display, rid, context)
Display *display;
XID rid;
XContext context;
XContext XUniqueContext()
ARGUMENTS
context Specifies the context type to which the data
belongs.
data Specifies the data to be associated with the
window and type.
data_return
Returns the data.
display Specifies the connection to the X server.
rid Specifies the resource ID with which the data is
associated.
DESCRIPTION
If an entry with the specified resource ID and type
already exists, XSaveContext overrides it with the speci-
fied context. The XSaveContext function returns a nonzero
error code if an error has occurred and zero otherwise.
Possible errors are XCNOMEM (out of memory).
Because it is a return value, the data is a pointer. The
XFindContext function returns a nonzero error code if an
error has occurred and zero otherwise. Possible errors
are XCNOENT (context-not-found).
The XDeleteContext function deletes the entry for the
given resource ID and type from the data structure. This
function returns the same error codes that XFindContext
returns if called with the same arguments. XDeleteContext
does not free the data whose address was saved.
The XUniqueContext function creates a unique context type
that may be used in subsequent calls to XSaveContext.
SEE ALSO
Xlib - C Language X Interface
Man(1) output converted with
man2html