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'\"
'\" Copyright (c) 1996, Expert Interface Technologies
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
'\" The file man.macros and some of the macros used by this file are
'\" copyrighted: (c) 1990 The Regents of the University of California.
'\"              (c) 1994-1995 Sun Microsystems, Inc.
'\" The license terms of the Tcl/Tk distrobution are in the file
'\" license.tcl.
.so man.macros
'----------------------------------------------------------------------
.HS tixCheckList tix 4.0
.BS
'
'
'----------------------------------------------------------------------
.SH NAME
tixCheckList \- Create and manipulate tixCheckList widgets
'
'
'
'----------------------------------------------------------------------
.SH SYNOPSIS
\fBtixCheckList\fI \fIpathName ?\fIoptions\fR?
'
'
'----------------------------------------------------------------------
.PP
.SH SUPER-CLASS
The \fBTixCheckList\fR class is derived from the \fBTixTree\fR class
and inherits all the commands, options and subwidgets of its
super-class.
'
'----------------------------------------------------------------------
.SH "STANDARD OPTIONS"
'
\fBTixCheckList\fR supports all the standard options of a frame
widget. See the \fBoptions(n)\fR manual entry for details on the
standard options.
'
'
'----------------------------------------------------------------------
.SH "WIDGET-SPECIFIC OPTIONS"
'
'----------BEGIN
.LP
.nf
Name:           \fBbrowseCmd\fR
Class:          \fBBrowseCmd\fR
Switch:         \fB\-browsecmd\fR
.fi
.IP
Specifies a command to call whenever the user browses on an entry
(usually by single-clicking on the entry). The command is called with
one argument, the pathname of the entry.
'----------END
'
'----------BEGIN
.LP
.nf
Name:           \fBcommand\fR
Class:          \fBCommand\fR
Switch:         \fB\-command\fR
.fi
.IP
Specifies a command to call whenever the user activates an entry
(usually by double-clicking on the entry). The command
is called with one argument, the pathname of the entry.
'----------END
'
'----------BEGIN
.LP
.nf
Name:           \fBradio\fR
Class:          \fBRadio\fR
Switch:         \fB\-radio\fR
.fi
.IP
A Boolean value. If set to true, the user can select at most one item
at a time; if set to false, the user can select as many items as
possible.
'----------END
'
'
'----------------------------------------------------------------------
.SH SUBWIDGETS
'----------BEGIN
.LP
.nf
Name:           \fBhlist\fR
Class:          \fBTixHList\fR
.fi
.IP
The hierarchical listbox that displays the CheckList.
'----------END
'
'----------BEGIN
.LP
.nf
Name:           \fBhsb\fR
Class:          \fBScrollbar\fR
.fi
.IP
The horizontal scrollbar subwidget.
'----------END
'
'----------BEGIN
.LP
.nf
Name:           \fBvsb\fR
Class:          \fBScrollbar\fR
.fi
.IP
The vertical scrollbar subwidget.
'----------END
'
.BE
'
'
'----------------------------------------------------------------------
.SH DESCRIPTION
'
.PP
'
The \fBtixCheckList\fR command creates a new window (given by the
\fIpathName\fR argument) and makes it into a CheckList widget.
Additional options, described above, may be specified on the command
line or in the option database to configure aspects of the CheckList
widget such as its cursor and relief.

The CheckList widget displays a list of items to be selected by the
user. CheckList acts similarly to the Tk checkbutton or radiobutton
widgets, except it is capable of handling many more items than
checkbuttons or radiobuttons.

The items are contained in the \fBhlist\fR subwidget.  Each item may
be in one of the following status: \fBon\fR (indicated by a check
bitmap), \fBoff\fR (indicated by a cross bitmap) \fBdefault\fR
(indicated by a gray box bitmap) or \fBnone\fR, in which case the item
will not be accompanied by a bitmap. The items whose status is
\fBon\fR, \fBoff\fR or \fBdefault\fR are called the \fIselectable\fR
items and can be checked or crossed by the user. All selectable
entries must be of the type \fBimagetext\fR.

The items whose status is \fBnone\fR cannot be checked or crossed by
the user; usually they are included in the \fBhlist\fR subwidget only
for explanation purposes or as separators.

Initially, all the items have a \fInone\fR status. To make an item
selectable, you can call the \fBsetstatus\fR command to change its
status (see below).
'

Notice that CheckList is a subclass of the TixTree widget and thus is
is capable of displaying a hierachy of selectable entries. When
necessary, you can call the \fBsetmode\fR method (see
\fBTixTree(n)\fR) to define the hierachical structure of the
selectable entries.
'
'----------------------------------------------------------------------
.SH WIDGET COMMANDS
.PP
'
The \fBtixCheckList\fR command creates a new Tcl command whose name is
the same as the path name of the CheckList's window.  This command may
be used to invoke various operations on the widget. It has the
following general form:
'
.DS C
'
\fIpathName option \fR?\fIarg arg ...\fR?
.PP
.DE
'
\fIPathName\fR is the name of the command, which is the same as the
CheckList widget's path name. \fIOption\fR and the \fIarg\fRs
determine the exact behavior of the command. The following commands
are possible for CheckList widgets:
'
.TP
\fIpathName \fBgetselection\fR ?\fIstatus\fR?
'
Returns a list of items whose status matches \fIstatus\fR. If
\fIstatus\fR is not specified, the list of items in the "\fBon\fR"
status will be returned.
'
.TP
\fIpathName \fBgetstatus\fR \fIentryPath\fR
'
Returns the current status of \fIentryPath\fR.
'
.TP
\fIpathName \fBsetstatus\fR \fIentryPath status\fR 
'
Sets the status of \fIentryPath\fR to be \fIstatus\fR. A bitmap will
be displayed next to the entry its status is \fBon\fR, \fBoff\fR or
\fBdefault\fR.
'
'
.TP
\fIpathName \fBsubwidget \fI name ?args?\fR 
'
When no options are given, this command returns the pathname of the
subwidget of the specified name.

When options are given, the widget command of the specified subwidget
will be called with these options.
'
'----------------------------------------------------------------------
.SH EXAMPLE
'
.PP
This example creates several choices for the user to select.
.PP
\fC
.nf
 tixCheckList .c
 .c subwidget hlist add choice1 -itemtype imagetext -text "Choice 1"
 .c subwidget hlist add choice2 -itemtype imagetext -text "Choice 2"
 .c subwidget hlist add choice3 -itemtype imagetext -text "Choice 3"
 .c setstatus choice1 on
 .c setstatus choice2 off
 .c setstatus choice3 off
 pack .c
.fi
\fR
'
'----------------------------------------------------------------------
.SH BINDINGS
.PP
'
The basic mouse and keyboard bindings of the CheckList widget are the
same as the bindings of the TixTree widget.

In addition, the status of the entries in the CheckList are toggled
under the following conditions:
'
.IP [1]
When the user press the mouse button over an entry.
'
.IP [2]
When the user press the <space> key over an entry.
'
.IP [3]
When the user press the <Return> key over an entry.
'
'
'----------------------------------------------------------------------
.SH KEYWORDS
Tix(n), tixHList(n), tixTree(n)