Tk_InternAtom(3Tk)Tk_InternAtom(3Tk)NAME
Tk_InternAtom, Tk_GetAtomName - manage cache of X atoms
SYNOPSIS
#include <tk.h>
Atom
Tk_InternAtom(tkwin, name)
char *
Tk_GetAtomName(tkwin, atom)
ARGUMENTS
Tk_Window tkwin (in) Token for window. Used to map atom or
name relative to a particular display.
char *name (in) String name for which atom is desired.
Atom atom (in) Atom for which corresponding string name
is desired.
DESCRIPTION
These procedures are similar to the Xlib procedures XInternAtom and
XGetAtomName. Tk_InternAtom returns the atom identifier associated with
string given by name; the atom identifier is only valid for the display
associated with tkwin. Tk_GetAtomName returns the string associated with
atom on tkwin's display. The string returned by Tk_GetAtomName is in
Tk's storage: the caller need not free this space when finished with the
string, and the caller should not modify the contents of the returned
string. If there is no atom atom on tkwin's display, then Tk_GetAtomName
returns the string ``?bad atom?''.
Tk caches the information returned by Tk_InternAtom and Tk_GetAtomName so
that future calls for the same information can be serviced from the cache
without contacting the server. Thus Tk_InternAtom and Tk_GetAtomName are
generally much faster than their Xlib counterparts, and they should be
used in place of the Xlib procedures.
KEYWORDS
atom, cache, display
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