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- .so man.macros
- .HS Tk_InternAtom tkc
- .BS
- .SH NAME
- Tk_InternAtom, Tk_GetAtomName \- manage cache of X atoms
- .SH SYNOPSIS
- .nf
- \fB#include <tk.h>\fR
- .sp
- Atom
- \fBTk_InternAtom(\fItkwin, name\fR)
- .sp
- char *
- \fBTk_GetAtomName(\fItkwin, atom\fR)
- .SH ARGUMENTS
- .AS Tk_Window parent
- .AP Tk_Window tkwin in
- Token for window. Used to map atom or name relative to a particular display.
- .AP char *name in
- String name for which atom is desired.
- .AP Atom atom in
- Atom for which corresponding string name is desired.
- .BE
-
- .SH DESCRIPTION
- .PP
- These procedures are similar to the Xlib procedures
- \fBXInternAtom\fR and \fBXGetAtomName\fR. \fBTk_InternAtom\fR
- returns the atom identifier associated with string given by
- \fIname\fR; the atom identifier is only valid for the display
- associated with \fItkwin\fR.
- \fBTk_GetAtomName\fR returns the string associated
- with \fIatom\fR on \fItkwin\fR's display. The string returned
- by \fBTk_GetAtomName\fR 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 \fIatom\fR on \fItkwin\fR's display,
- then \fBTk_GetAtomName\fR returns the string ``?bad atom?''.
- .PP
- Tk caches
- the information returned by \fBTk_InternAtom\fR and \fBTk_GetAtomName\fR
- so that future calls
- for the same information can be serviced from the cache without
- contacting the server. Thus \fBTk_InternAtom\fR and \fBTk_GetAtomName\fR
- are generally much faster than their Xlib counterparts, and they
- should be used in place of the Xlib procedures.
-
- .SH KEYWORDS
- atom, cache, display
-