hlist(3)

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 -high lightthickness -relief -selectbackground -selectfore ground -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. Nor
mally 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 argu ments, the entryPath of the entry whose indicator has
been triggered and additional information about the
event. The additional information is one of the fol
lowing 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_Get
Pixels.
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 sin
gle, 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 char
acter 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 charac
ters.

DESCRIPTION

The HList method creates a new window (given by the $wid
get argument) and makes it into a HList widget. Addi
tional 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 direc
tory trees. The list entries are indented and connected by
branch lines according to their places in the hierachy.

Each list entry is identified by an entryPath. The entry Path is a sequence of entry names separated by the separa tor 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 con
tains 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 meth ods. 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 wid
gets:

$hlist->add($entryPath ?,option=>value, ...?): Creates a new list entry with the pathname $entryPath. A list entry must be created after its parent is cre
ated (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 dis
play for the new list entry. type must be a
valid display item type. Currently the avail
able 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 dis
play 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 $parent_ Path 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 entry Path 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 selec
tion 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 pix
els). 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 dis
play 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_GetPix els.
$hlist->columnWidth($col, -char, nChars): The width is set to be the average width occu
pied 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-anddrop functionality has not been implemented in Tix
yet.
$hlist->dragsiteClear: Remove the dragsite, if any, from the this HList wid
get. 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 tar get 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 wid
get. 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 $entry_ Path. 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 speci fied, returns a list describing all of the available
options for $entryPath (see Tk::options for informa tion on the format of this list.) If option is speci
fied 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 mod ifies 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 dis
play 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 other
wise.
$hlist->header(size, $entryPath): 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 speci
fied 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 dis
play item (see Tk::options for information on
the format of this list). If option is speci
fied 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 dis
play 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. If no entries are selected,
returns an empty string.
$hlist->item(option, ?args, ...?): Creates and configures the display items at individual
columns the entries. The form of additional of argu
ments 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 des
ignated 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 speci
fied 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 des
ignated 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 speci
fied by this HList widget's -itemtype option is used. Additional parameters, in optionvalue pairs, can be passed to configure the
appearance of the display item. Each optionvalue pair must be a valid option for this
type of display item.
$hlist->itemDelete($entryPath, $col): Deletes the display item at the column desig
nated 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 speci
fied 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 vis ible 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 wid
get. 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 out
side 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 ele
ment is .6, 20% of the HList entry is offscreen to the left, the middle 40% is visible
in the window, and 40% of the entry is offscreen 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 frac_
tion of the total width of the HList is offscreen to the left. fraction must be a frac tion 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 screen fuls. 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, rela
tive 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 onethird 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 call back 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. How
ever, 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 <Con
trol-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 high lighted 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->config

ure(-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

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