X Version 11 (1 September 1988) XSaveContext(XS)
NAME
XSaveContext, XFindContext, XDeleteContext, XUniqueContext -
associative look-up routines
SYNTAX
int XSaveContext(display, w, context, data)
Display *display;
Window w;
XContext context;
caddr_t data;
int XFindContext(display, w, context, data_return)
Display *display;
Window w;
XContext context;
caddr_t *data_return;
int XDeleteContext(display, w, context)
Display *display;
Window w;
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 a pointer to the data.
display Specifies the connection to the X server.
w Specifies the window with which the data is
associated.
DESCRIPTION
If an entry with the specified window and type already
exists, XSaveContext overrides it with the specified
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
window 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
(printed 2/12/90) (1 September 1988) XSaveContext(XS)