47 lines
1.4 KiB
Groff
47 lines
1.4 KiB
Groff
'\"
|
|
'\" Copyright (c) 1990 The Regents of the University of California.
|
|
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
|
|
'\"
|
|
'\" See the file "license.terms" for information on usage and redistribution
|
|
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
|
'\"
|
|
'\" SCCS: @(#) GetOption.3 1.9 96/03/26 18:11:11
|
|
'\"
|
|
.so man.macros
|
|
.TH Tk_GetOption 3 "" Tk "Tk Library Procedures"
|
|
.BS
|
|
.SH NAME
|
|
Tk_GetOption \- retrieve an option from the option database
|
|
.SH SYNOPSIS
|
|
.nf
|
|
\fB#include <tk.h>\fR
|
|
.sp
|
|
Tk_Uid
|
|
\fBTk_GetOption\fR(\fItkwin, name, class\fR)
|
|
.SH ARGUMENTS
|
|
.AS Tk_Window *class
|
|
.AP Tk_Window tkwin in
|
|
Token for window.
|
|
.AP char *name in
|
|
Name of desired option.
|
|
.AP char *class in
|
|
Class of desired option. Null means there is no class for
|
|
this option; do lookup based on name only.
|
|
.BE
|
|
|
|
.SH DESCRIPTION
|
|
.PP
|
|
This procedure is invoked to retrieve an option from the database
|
|
associated with \fItkwin\fR's main window. If there is an option
|
|
for \fItkwin\fR that matches the given \fIname\fR or \fIclass\fR,
|
|
then it is returned in the form of a Tk_Uid. If multiple options
|
|
match \fIname\fR and \fIclass\fR, then the highest-priority one
|
|
is returned. If no option matches, then NULL is returned.
|
|
.PP
|
|
\fBTk_GetOption\fR caches options related to \fItkwin\fR so that
|
|
successive calls for the same \fItkwin\fR will execute much more
|
|
quickly than successive calls for different windows.
|
|
|
|
.SH KEYWORDS
|
|
class, name, option, retrieve
|