Ubuntu Manpage: Tk::HList - Create and manipulate Tix Hierarchial List widgets

Provided by: perl-tk_804.031-1build1_amd64

NAME

       Tk::HList - Create and manipulate Tix Hierarchial List widgets

SYNOPSIS

       $hlist = $parent->HList(?options?);

STANDARD OPTIONS

       -background    -borderwidth   -cursor   -exportselection
       -foreground    -font     -height   -highlightcolor
       -highlightthickness -relief   -selectbackground
       -selectforeground   -xscrollcommand     -yscrollcommand -width

       See Tk::options for details of the standard options.

WIDGET-SPECIFIC OPTIONS

Name: browsecmd
Class: BrowseCmd
Switch: -browsecmd
Specifies a perl/Tk callback to be executed when the user browses through the entries
in the HList widget.

Name: columns
Class: Columns
Switch: -columns
Specifies the number of columns in this HList widget. This option can only be set
during the creation of the HList widget and cannot be changed subsequently.

Name: command
Class: Command
Switch: -command
Specifies the perl/Tk callback to be executed when the user invokes a list entry in
the HList widget. Normally the user invokes a list entry by double-clicking it or
pressing the Return key.

Name: drawBranch
Class: DrawBranch
Switch: -drawbranch
A Boolean value to specify whether branch line should be drawn to connect list entries
to their parents.

Name: foreground
Class: Foreground
Switch: -foreground
Alias: -fg
[OBSOLETE] Specifies the default foreground color for the list entries.

Name: gap
Class: Gap
Switch: -gap
[OBSOLETE] The default distance between the bitmap/image and the text in list entries.

Name: header
Class: Header
Switch: -header
A Boolean value specifying whether headers should be displayed for this HList widget
(see the header method below).

Name: height
Class: Height
Switch: -height
Specifies the desired height for the window in number of characters.

Name: indent
Class: Indent
Switch: -indent
Specifies the amount of horizontal indentation between a list entry and its children.
Must be a valid screen distance value.

Name: indicator
Class: Indicator
Switch: -indicator
Specifies whether the indicators should be displayed inside the HList widget. See the
indicator method below.

Name: indicatorCmd
Class: IndicatorCmd
Switch: -indicatorcmd
Specifies a perl/Tk callback to be executed when the user manipulates the indicator of
an HList entry. The -indicatorcmd is triggered when the user press or releases the
mouse button over the indicator in an HList entry. By default the perl/Tk callback
specified by -indicatorcmd is executed with two additional arguments, the entryPath of
the entry whose indicator has been triggered and additional information about the
event. The additional information is one of the following strings: <Arm>, <Disarm>,
and <Activate>.

Name: itemType
Class: ItemType
Switch: -itemtype
Specifies the default type of display item for this HList widget. When you call the
itemCreate, add and addchild methods, display items of this type will be created if
the -itemtype option is not specified .

Name: padX
Class: Pad
Switch: -padx
[OBSOLETE] The default horizontal padding for list entries.

Name: padY
Class: Pad
Switch: -padx
[OBSOLETE] The default vertical padding for list entries.

Name: selectBackground
Class: SelectBackground
Switch: -selectbackground
Specifies the background color for the selected list entries.

Name: selectBorderWidth
Class: BorderWidth
Switch: -selectborderwidth
Specifies a non-negative value indicating the width of the 3-D border to draw around
selected items. The value may have any of the forms acceptable to Tk_GetPixels.

Name: selectForeground
Class: SelectForeground
Switch: -selectforeground
Specifies the foreground color for the selected list entries.

Name: selectMode
Class: SelectMode
Switch: -selectmode
Specifies one of several styles for manipulating the selection. The value of the
option may be arbitrary, but the default bindings expect it to be either single,
browse, multiple, or extended; the default value is single.

Name: sizeCmd
Class: SizeCmd
Switch: -sizecmd
Specifies a perl/Tk callback to be called whenever the HList widget changes its size.
This method can be useful to implement ``user scroll bars when needed'' features.

Name: separator
Class: Separator
Switch: -separator
Specifies the character to used as the separator character when intepreting the path-
names of list entries. By default the character "." is used.

Name: width
Class: Width
Switch: -width
Specifies the desired width for the window in characters.

DESCRIPTION

       The HList method creates a new window (given by the $widget argument) and makes it into a
       HList widget.  Additional options, described above, may be specified on the command line
       or in the option database to configure aspects of the HList widget such as its cursor and
       relief.

       The HList widget can be used to display any data that have a hierarchical structure, for
       example, file system directory trees. The list entries are indented and connected by
       branch lines according to their places in the hierarchy.

       Each list entry is identified by an entryPath. The entryPath is a sequence of entry names
       separated by the separator charactor (specified by the -separator option). An entry name
       can be any string that does not contain the separator charactor, or it can be the a string
       that contains only one separator charactor.

       For example, when "." is used as the separator charactor, "one.two.three" is the entryPath
       for a list entry whose parent is "one.two", whose parent is "one", which is a toplevel
       entry (has no parents).

       Another examples: ".two.three" is the entryPath for a list entry whose parent is ".two",
       whose parent is ".", which is a toplevel entry.

DISPLAY ITEMS

       Each list entry in an HList widget is associated with a display item.  The display item
       determines what visual information should be displayed for this list entry. Please see
       Tk::DItem for a list of all display items.  When a list entry is created by the
       itemCreate, add or addchild widget methods, the type of its display item is determined by
       the -itemtype option passed to these methods. If the -itemtype is omitted, then by default
       the type specified by this HList widget's -itemtype option is used.

WIDGET METHODS

The HList method creates a widget object. This object supports the configure and cget
methods described in Tk::options which can be used to enquire and modify the options
described above. The widget also inherits all the methods provided by the generic
Tk::Widget class.

The following additional methods are available HList widgets:

$hlist->add($entryPath ?,option=>value, ...?)
Creates a new list entry with the pathname $entryPath. A list entry must be created
after its parent is created (unless this entry is a top-level entry, which has no
parent). See also "BUGS" below. This method returns the entryPath of the newly
created list entry. The following configuration options can be given to configure the
list entry:

-at => position
Insert the new list at the position given by position. position must be a
valid integer. The position 0 indicates the first position, 1 indicates the
second position, and so on.

-after => afterWhich
Insert the new list entry after the entry identified by afterWhich. afterWhich
must be a valid list entry and it mush have the same parent as the new list
entry

-before => beforeWhich
Insert the new list entry before the entry identified by beforeWhich.
beforeWhich must be a valid list entry and it mush have the same parent as the
new list entry

-data => string
Specifies a string to associate with this list entry. This string can be
queried by the info method. The application programmer can use the -data
option to associate the list entry with the data it represents.

-itemtype => type
Specifies the type of display item to be display for the new list entry. type
must be a valid display item type. Currently the available display item types
are imagetext, text, and $widget. If this option is not specified, then by
default the type specified by this HList widget's -itemtype option is used.

-state => state
Specifies whether this entry can be selected or invoked by the user. Must be
either normal or disabled.

The add method accepts additional configuration options to configure the display item
associated with this list entry. The set of additional configuration options depends
on the type of the display item given by the -itemtype option. Please see Tk::DItem
for a list of the configuration options for each of the display item types.

$hlist->addchild($parentPath, ?option, value, ..., ?)
Adds a new child entry to the children list of the list entry identified by
$parentPath. Or, if $parentPath is set to be the empty string, then creates a new
toplevel entry. The name of the new list entry will be a unique name automatically
generated by the HList widget. Usually if $parentPath is foo, then the entryPath of
the new entry will be foo.0, foo.1, ... etc. This method returns the entryPath of the
newly created list entry. option can be any option for the add method. See also
"BUGS" below.

$hlist->anchorSet($entryPath)
Sets the anchor to the list entry identified by $entryPath. The anchor is the end of
the selection that is fixed while the user is dragging out a selection with the mouse.

$hlist->anchorClear
Removes the anchor, if any, from this HList widget. This only removes the surrounding
highlights of the anchor entry and does not affect its selection status.

$hlist->columnWidth($col?, -char?, ?width?)
Querys or sets the width of a the column $col in the HList widget. The value of $col
is zero-based: 0 stands for the first column, 1 stands for the second, and so on. If
no further parameters are given, returns the current width of this column (in number
of pixels). Additional parameters can be given to set the width of this column:

$hlist->columnWidth($col, '')
An empty string indicates that the width of the column should be just wide
enough to display the widest element in this column. In this case, the width
of this column may change as a result of the elements in this column changing
their sizes.

$hlist->columnWidth($col, width)
width must be in a form accepted by Tk_GetPixels.

$hlist->columnWidth($col, -char, nChars)
The width is set to be the average width occupied by nChars number of
characters of the font specified by the -font option of this HList widget.

$hlist->delete(option, $entryPath)
Delete one or more list entries. option may be one of the following:

all Delete all entries in the HList. In this case the $entryPath does not need to
be specified.

entry Delete the entry specified by $entryPath and all its offsprings, if any.

offsprings
Delete all the offsprings, if any, of the entry specified by $entryPath.
However, $entryPath itself is not deleted.

siblings
Delete all the list entries that share the same parent with the entry
specified by $entryPath. However, $entryPath itself is not deleted.

$hlist->dragsiteSet($entryPath)
Sets the dragsite to the list entry identified by $entryPath. The dragsite is used to
indicate the source of a drag-and-drop action. Currently drag-and-drop functionality
has not been implemented in Tix yet.

$hlist->dragsiteClear
Remove the dragsite, if any, from the this HList widget. This only removes the
surrounding highlights of the dragsite entry and does not affect its selection status.

$hlist->dropsiteSet($entryPath)
Sets the dropsite to the list entry identified by $entryPath. The dropsite is used to
indicate the target of a drag-and-drop action. Currently drag-and-drop functionality
has not been implemented in Tix yet.

$hlist->dropsiteClear
Remove the dropsite, if any, from the this HList widget. This only removes the
surrounding highlights of the dropsite entry and does not affect its selection status.

$hlist->entrycget($entryPath, option)
Returns the current value of the configuration option given by option for the entry
indentfied by $entryPath. Option may have any of the values accepted by the add
method.

$hlist->entryconfigure($entryPath ?,option?, ?value=>option, ...?)
Query or modify the configuration options of the list entry indentfied by $entryPath.
If no option is specified, returns a list describing all of the available options for
$entryPath (see Tk::options for information on the format of this list.) If option is
specified with no value, then the method returns a list describing the one named
option (this list will be identical to the corresponding sublist of the value returned
if no option is specified). If one or more option-value pairs are specified, then the
method modifies the given option(s) to have the given value(s); in this case the
method returns an empty string. Option may have any of the values accepted by the add
or addchild method. The exact set of options depends on the value of the -itemtype
option passed to the the add or addchild method when this list entry is created.

$hlist->header(option, $col ?,args, ...?)
Manipulates the header items of this HList widget. If the -header option of this HList
widget is set to true, then a header item is displayed at the top of each column. The
$col argument for this method must be a valid integer. 0 indicates the first column, 1
the second column, ... and so on. This method supports the following options:

$hlist->header(cget, $col, option)
If the $col-th column has a header display item, returns the value of the
specified option of the header item. If the header doesn't exist, returns an
error.

$hlist->header(configure, $col, ?option?, ?value, option, value, ...?)
Query or modify the configuration options of the header display item of the
$col-th column. The header item must exist, or an error will result. If no
option is specified, returns a list describing all of the available options
for the header display item (see Tk::options for information on the format of
this list.) If option is specified with no value, then the method returns a
list describing the one named option (this list will be identical to the
corresponding sublist of the value returned if no option is specified). If one
or more option-value pairs are specified, then the method modifies the given
option(s) to have the given value(s); in this case the method returns an empty
string. Option may have any of the values accepted by the header create
method. The exact set of options depends on the value of the -itemtype option
passed to the the header create method when this display item was created.

$hlist->header(create, $col, ?-itemtype type? ?option value ...?
Creates a new display item as the header for the $col-th column. See also
"BUGS" below. If an header display item already exists for this column, it
will be replaced by the new item. An optional parameter -itemtype can be used
to specify what type of display item should be created. If the -itemtype is
not given, then by default the type specified by this HList widget's -itemtype
option is used. Additional parameters, in option-value pairs, can be passed to
configure the appearance of the display item. Each option-value pair must be a
valid option for this type of display item or one of the following:

-borderwidth => color
Specifies the border width of this header item.

-headerbackground => color
Specifies the background color of this header item.

-relief => type
Specifies the relief type of the border of this header item.

$hlist->header(delete, $col)
Deletes the header display item for the $col-th column.

$hlist->header(exists, $col)
Return true if an header display item exists for the $col-th column; return
false otherwise.

$hlist->header(size, $col)
If an header display item exists for the $col-th column , returns its size in
pixels in a two element list (width, height); returns an error if the header
display item does not exist.

$hlist->hide(option ?,$entryPath?)
Makes some of entries invisible without deleting them. Option can be one of the
following:

entry Hides the list entry identified by $entryPath.

Currently only the entry option is supported. Other options will be added in the next
release.

$hlist->indicator(option, $entryPath, ?args, ...?)
Manipulates the indicator on the list entries. An indicator is usually a small display
item (such as an image) that is displayed to the left to an entry to indicate the
status of the entry. For example, it may be used to indicate whether a directory is
opened or closed. Option can be one of the following:

$hlist->indicator(cget, $entryPath, option)
If the list entry given by $entryPath has an indicator, returns the value of
the specified option of the indicator. If the indicator doesn't exist, returns
an error.

$hlist->indicator(configure, $entryPath, ?option?, ?value, option, value, ...?)
Query or modify the configuration options of the indicator display item of the
entry specified by $entryPath. The indicator item must exist, or an error will
result. If no option is specified, returns a list describing all of the
available options for the indicator display item (see Tk::options for
information on the format of this list). If option is specified with no value,
then the method returns a list describing the one named option (this list will
be identical to the corresponding sublist of the value returned if no option
is specified). If one or more option-value pairs are specified, then the
method modifies the given option(s) to have the given value(s); in this case
the method returns an empty string. Option may have any of the values
accepted by the indicator create method. The exact set of options depends on
the value of the -itemtype option passed to the the indicator create method
when this display item was created.

$hlist->indicator(create, $entryPath, ?, -itemtype type? ?option value ...?)
Creates a new display item as the indicator for the entry specified by
$entryPath. If an indicator display item already exists for this entry, it
will be replaced by the new item. An optional parameter -itemtype can be used
to specify what type of display item should be created. If the -itemtype is
not given, then by default the type specified by this HList widget's -itemtype
option is used. Additional parameters, in option-value pairs, can be passed to
configure the appearance of the display item. Each option-value pair must be a
valid option for this type of display item.

$hlist->indicator(delete, $entryPath)
Deletes the indicator display item for the entry given by $entryPath.

$hlist->indicator(exists, $entryPath)
Return true if an indicator display item exists for the entry given by
$entryPath; return false otherwise.

$hlist->indicator(size, $entryPath)
If an indicator display item exists for the entry given by $entryPath, returns
its size in a two element list of the form {width height}; returns an error if
the indicator display item does not exist.

$hlist->info(option, arg, ...)
Query information about the HList widget. option can be one of the following:

$hlist->info(anchor)
Returns the entryPath of the current anchor, if any, of the HList widget. If
the anchor is not set, returns the empty string.

$hlist->infoBbox($entryPath)
Returns a list of four numbers describing the visible bounding box of the
entry given $entryPath. The first two elements of the list give the x and y
coordinates of the upper-left corner of the screen area covered by the entry
(specified in pixels relative to the widget) and the last two elements give
the lower-right corner of the area, in pixels. If no part of the entry given
by index is visible on the screen then the result is an empty string; if the
entry is partially visible, the result gives the only the visible area of the
entry.

$hlist->info(children ?,$entryPath?)
If $entryPath is given, returns a list of the entryPath's of its children
entries. Otherwise returns a list of the toplevel entryPath's.

$hlist->info(data ?,$entryPath?)
Returns the data associated with $entryPath.

$hlist->info(dragsite)
Returns the entryPath of the current dragsite, if any, of the HList widget. If
the dragsite is not set, returns the empty string.

$hlist->info(dropsite)
Returns the entryPath of the current dropsite, if any, of the HList widget. If
the dropsite is not set, returns the empty string.

$hlist->info(exists, $entryPath)
Returns a boolean value indicating whether the list entry $entryPath exists.

$hlist->info(hidden, $entryPath)
Returns a boolean value indicating whether the list entry $entryPath is hidden
or not.

$hlist->info(next, $entryPath)
Returns the entryPath of the list entry, if any, immediately below this list
entry. If this entry is already at the bottom of the HList widget, returns an
empty string.

$hlist->info(parent, $entryPath)
Returns the name of the parent of the list entry identified by $entryPath. If
entryPath is a toplevel list entry, returns the empty string.

$hlist->info(prev, $entryPath)
Returns the entryPath of the list entry, if any, immediately above this list
entry. If this entry is already at the top of the HList widget, returns an
empty string.

$hlist->info(selection)
Returns a list of selected entries in the HList widget. In scalar context,
returns an anonymous list of the selected entries. If no entries are
selected, undef is returned in scalar context, and an empty list otherwise.

$hlist->item(option, ?args, ...?)
Creates and configures the display items at individual columns the entries. The form
of additional of arguments depends on the choice of option:

$hlist->itemCget($entryPath, $col, option)
Returns the current value of the configure option of the display item at the
column designated by $col of the entry specified by $entryPath.

$hlist->itemConfigure($entryPath, $col ?,option?, ?value, option, value, ...?)
Query or modify the configuration options of the display item at the column
designated by $col of the entry specified by $entryPath. If no option is
specified, returns a list describing all of the available options for
$entryPath (see Tk::options for information on the format of this list). If
option is specified with no value, then the method returns a list describing
the one named option (this list will be identical to the corresponding sublist
of the value returned if no option is specified). If one or more option-value
pairs are specified, then the method modifies the given option(s) to have the
given value(s); in this case the method returns an empty string. Option may
have any of the values accepted by the item create method. The exact set of
options depends on the value of the -itemtype option passed to the the item
create method when this display item was created.

$hlist->itemCreate($entryPath, $col ?,-itemtype=>type? ?,option value ...?)
Creates a new display item at the column designated by $col of the entry
specified by $entryPath. An optional parameter -itemtype can be used to
specify what type of display items should be created. If the -itemtype is not
specified, then by default the type specified by this HList widget's -itemtype
option is used. Additional parameters, in option-value pairs, can be passed
to configure the appearance of the display item. Each option- value pair must
be a valid option for this type of display item.

$hlist->itemDelete($entryPath, $col)
Deletes the display item at the column designated by $col of the entry
specified by $entryPath.

$hlist->itemExists($entryPath, $col)
Returns true if there is a display item at the column designated by $col of
the entry specified by $entryPath; returns false otherwise.

$hlist->nearest(y)
$hlist->nearest(y) Given a y-coordinate within the HList window, this method returns
the entryPath of the (visible) HList element nearest to that y-coordinate.

$hlist->see($entryPath)
Adjust the view in the HList so that the entry given by $entryPath is visible. If the
entry is already visible then the method has no effect; if the entry is near one edge
of the window then the HList scrolls to bring the element into view at the edge;
otherwise the HList widget scrolls to center the entry.

$hlist->selection(option, arg, ...)
$hlist->selectionOption(arg, ...)
This method is used to adjust the selection within a HList widget. It has several
forms, depending on option:

$hlist->selectionClear(?from?, ?to?)
When no extra arguments are given, deselects all of the list entrie(s) in this
HList widget. When only from is given, only the list entry identified by from
is deselected. When both from and to are given, deselects all of the list
entrie(s) between between from and to, inclusive, without affecting the
selection state of elements outside that range.

$hlist->selectionGet
This is an alias for the infoSelection method.

$hlist->selectionIncludes($entryPath)
Returns 1 if the list entry indicated by $entryPath is currently selected;
returns 0 otherwise.

$hlist->selectionSet(from?, to?)
Selects all of the list entrie(s) between between from and to, inclusive,
without affecting the selection state of entries outside that range. When only
from is given, only the list entry identified by from is selected.

$hlist->show(option ?,$entryPath?)
Show the entries that are hidden by the hide method, option can be one of the
following:

entry Shows the list entry identified by $entryPath.

Currently only the entry option is supported. Other options will be added in future
releases.

$hlist->xview(args)
This method is used to query and change the horizontal position of the information in
the widget's window. It can take any of the following forms:

$hlist->xview
Returns a list containing two elements. Each element is a real fraction
between 0 and 1; together they describe the horizontal span that is visible in
the window. For example, if the first element is .2 and the second element is
.6, 20% of the HList entry is off-screen to the left, the middle 40% is
visible in the window, and 40% of the entry is off-screen to the right. These
are the same values passed to scrollbars via the -xscrollcommand option.

$hlist->xview($entryPath)
Adjusts the view in the window so that the list entry identified by $entryPath
is aligned to the left edge of the window.

$hlist->xview(moveto => fraction)
Adjusts the view in the window so that fraction of the total width of the
HList is off-screen to the left. fraction must be a fraction between 0 and 1.

$hlist->xview(scroll => number, what)
This method shifts the view in the window left or right according to number
and what. Number must be an integer. What must be either units or pages or an
abbreviation of one of these. If what is units, the view adjusts left or right
by number character units (the width of the 0 character) on the display; if it
is pages then the view adjusts by number screenfuls. If number is negative
then characters farther to the left become visible; if it is positive then
characters farther to the right become visible.

$hlist->yview(?args?)
This method is used to query and change the vertical position of the entries in the
widget's window. It can take any of the following forms:

$hlist->yview
Returns a list containing two elements, both of which are real fractions
between 0 and 1. The first element gives the position of the list element at
the top of the window, relative to the HList as a whole (0.5 means it is
halfway through the HList, for example). The second element gives the
position of the list entry just after the last one in the window, relative to
the HList as a whole. These are the same values passed to scrollbars via the
-yscrollcommand option.

$hlist->yview($entryPath)
Adjusts the view in the window so that the list entry given by $entryPath is
displayed at the top of the window.

$hlist->yview(moveto => fraction)
Adjusts the view in the window so that the list entry given by fraction
appears at the top of the window. Fraction is a fraction between 0 and 1; 0
indicates the first entry in the HList, 0.33 indicates the entry one-third the
way through the HList, and so on.

$hlist->yview(scroll => number, what)
This method adjust the view in the window up or down according to number and
what. Number must be an integer. What must be either units or pages. If
what is units, the view adjusts up or down by number lines; if it is pages
then the view adjusts by number screenfuls. If number is negative then
earlier entries become visible; if it is positive then later entries become
visible.

BINDINGS

[1] If the -selectmode is "browse", when the user drags the mouse pointer over the list
entries, the entry under the pointer will be highlighted and the -browsecmd callback
will be called with one parameter, the entryPath of the highlighted entry. Only one
entry can be highlighted at a time. The -command callback will be called when the user
double-clicks on a list entry.

[2] If the -selectmode is "single", the entries will only be highlighted by mouse
<ButtonRelease-1> events. When a new list entry is highlighted, the -browsecmd
callback will be called with one parameter indicating the highlighted list entry. The
-command callback will be called when the user double-clicks on a list entry.

[3] If the -selectmode is "multiple", when the user drags the mouse pointer over the list
entries, all the entries under the pointer will be highlighted. However, only a
contiguous region of list entries can be selected. When the highlighted area is
changed, the -browsecmd callback will be called with an undefined parameter. It is the
responsibility of the -browsecmd callback to find out the exact highlighted selection
in the HList. The -command callback will be called when the user double-clicks on a
list entry.

[4] If the -selectmode is "extended", when the user drags the mouse pointer over the list
entries, all the entries under the pointer will be highlighted. The user can also make
disjointed selections using <Control-ButtonPress-1>. When the highlighted area is
changed, the -browsecmd callback will be called with an undefined parameter. It is the
responsibility of the -browsecmd callback to find out the exact highlighted selection
in the HList. The -command callback will be called when the user double-clicks on a
list entry.

[5] Arrow key bindings: <Up> arrow key moves the anchor point to the item right on top of
the current anchor item. <Down> arrow key moves the anchor point to the item right
below the current anchor item. <Left> arrow key moves the anchor to the parent item
of the current anchor item. <Right> moves the anchor to the first child of the current
anchor item. If the current anchor item does not have any children, moves the anchor
to the item right below the current anchor item.

EXAMPLE

       This example demonstrates how to use an HList to store a file directory structure and
       respond to the user's browse events:

          use strict;
          use Tk;
          use Tk::Label;
          use Tk::HList;

          my $mw = MainWindow->new();
          my $label = $mw->Label(-width=>15);
          my $hlist = $mw->HList(
                              -itemtype   => 'text',
                              -separator  => '/',
                              -selectmode => 'single',
                              -browsecmd  => sub {
                                        my $file = shift;
                                        $label->configure(-text=>$file);
                                     }
                              );

          foreach ( qw(/ /home /home/ioi /home/foo /usr /usr/lib) ) {
              $hlist->add($_, -text=>$_);
          }

          $hlist->pack;
          $label->pack;

          MainLoop;

BUGS

       The fact that the display item at column 0 is implicitly associated with the whole entry
       is probably a design bug. This was done for backward compatibility purposes. The result is
       that there is a large overlap between the item method and the add, addchild, entrycget and
       entryconfigure methods.  Whenever multiple columns exist, the programmer should use ONLY
       the item method to create and configure the display items in each column; the add,
       addchild, entrycget and entryconfigure should be used ONLY to create and configure
       entries.

KEYWORDS

       Hierarchical Listbox