XSaveContext(3) XLIB FUNCTIONS XSaveContext(3)

NAME

XSaveContext, XFindContext, XDeleteContext, XUniqueContext -
associative look-up routines

SYNTAX

int XSaveContext(Display *display, XID rid, XContext context, _Xconst
char *data);

int XFindContext(Display *display, XID rid, XContext context,
XPointer *data_return);

int XDeleteContext(Display *display, XID rid, XContext context);

XContext XUniqueContext(void);

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 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 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

X Version 11 libX11 1.8.10 XSaveContext(3)