tk_internatom(3)
NAME
Tk_InternAtom, Tk_GetAtomName - manage cache of X atoms
SYNOPSIS
#include <tk.h> Atom Tk_InternAtom(tkwin, name) CONST char * Tk_GetAtomName(tkwin, atom)
ARGUMENTS
- Tk_Window tkwin (in) Token for window. Used to
- map atom or name relative
to a particular display. - CONST char *name (in) String name for which atom
- is desired.
- Atom atom (in) Atom for which correspond
- ing string name is desired.
DESCRIPTION
These procedures are similar to the Xlib procedures XIn
ternAtom 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 informa
tion can be serviced from the cache without contacting the
server. Thus Tk_InternAtom and Tk_GetAtomName are gener
ally much faster than their Xlib counterparts, and they
should be used in place of the Xlib procedures.
KEYWORDS
- atom, cache, display