NAME
tixHList - Create and manipulate Tix Hierarchial List wid
gets
SYNOPSIS
tixHList pathName ?options?
STANDARD OPTIONS
-background -borderWidth -cursor -foreground
-font -height -highlightColor -highlightThickness
-relief -selectBackground -selectForeground
-xScrollCommand -yScrollCommand -width
See the options manual entry for details on the standard
options.
WIDGET-SPECIFIC OPTIONS
Command-Line Name:-browsecmd
Database Name: browsecmd
Database Class: BrowseCmd
Specifies a TCL command to be executed when the
user browses through the entries in the HList wid
get.
Command-Line Name:-columns
Database Name: columns
Database Class: Columns
Specifies the number of columns in this HList wid
get. This option can only be set during the cre
ation of the HList widget and cannot be changed
subsequently.
Command-Line Name:-command
Database Name: command
Database Class: Command
Specifies the TCL command 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.
Command-Line Name:-drawbranch
Database Name: drawBranch
Database Class: DrawBranch
A Boolean value to specify whether branch line
should be drawn to connect list entries to their
parents.
Command-Line Name:-foreground or -fg
Database Class: Foreground
[OBSOLETE] Specifies the default foreground color
for the list entries.
Command-Line Name:-gap
Database Name: gap
Database Class: Gap
[OBSOLETE] The default distance between the
bitmap/image and the text in list entries.
Command-Line Name:-header
Database Name: header
Database Class: Header
A Boolean value specifying whether headers should
be displayed for this HList widget (see the header
widget command below).
Command-Line Name:-height
Database Name: height
Database Class: Height
Specifies the desired height for the window in num
ber of characters.
Command-Line Name:-indent
Database Name: indent
Database Class: Indent
Specifies the amount of horizontal indentation
between a list entry and its children. Must be a
valid screen distance value.
Command-Line Name:-indicator
Database Name: indicator
Database Class: Indicator
Specifies whether the indicators should be dis
played inside the HList widget. See the indicator
widget command below.
Command-Line Name:-indicatorcmd
Database Name: indicatorCmd
Database Class: IndicatorCmd
Specifies a TCL command 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 TCL command speci
fied by -indicatorcmd is executed with one
whose indicator has been triggered. Additional
information about the event can be obtained by the
tixEvent command.
Command-Line Name:-itemtype
Database Name: itemType
Database Class: ItemType
Specifies the default type of display item for this
HList widget. When you call the add and addchild
widget commands, display items of this type will be
created if the -itemtype option is not specified .
Command-Line Name:-padx
Database Name: padX
Database Class: Pad
[OBSOLETE] The default horizontal padding for list
entries.
Command-Line Name:-padx
Database Name: padY
Database Class: Pad
[OBSOLETE] The default vertical padding for list
entries.
Command-Line Name:-selectbackground
Database Name: selectBackground
Database Class: SelectBackground
Specifies the background color for the selected
list entries.
Command-Line Name:-selectborderwidth
Database Name: selectBorderWidth
Database Class: BorderWidth
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.
Command-Line Name:-selectforeground
Database Name: selectForeground
Database Class: SelectForeground
Specifies the foreground color for the selected
list entries.
Command-Line Name:-selectmode
Database Name: selectMode
Database Class: SelectMode
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.
Command-Line Name:-sizecmd
Database Name: sizeCmd
Database Class: SizeCmd
Specifies a TCL script to be called whenever the
HList widget changes its size. This command can be
useful to implement "user scroll bars when needed"
features.
Command-Line Name:-separator
Database Name: separator
Database Class: Separator
Specifies the character to used as the separator
character when intepreting the path-names of list
entries. By default the character "." is used.
Command-Line Name:-width
Database Name: width
Database Class: Width
Specifies the desired width for the window in char
acters.
_________________________________________________________________
DESCRIPTION
The tixHList command creates a new window (given by the
pathName 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 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).
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 the tixDisplayStyle manual page for a list of
all display items.
When a list entry is created by the add or addchild widget
commands, the type of its display item is determined by
the -itemtype option passed to these commands. If the
-itemtype is omitted, then by default the type specified
by this HList widget's -itemtype option is used.
WIDGET COMMAND
The tixHList command creates a new Tcl command whose name
is the same as the path name of the HList widget's window.
This command may be used to invoke various operations on
the widget. It has the following general form:
pathName option ?arg arg ...?
PathName is the name of the command, which is the same as
the HList widget's path name. Option and the args deter
mine the exact behavior of the command. The following
commands are possible for HList widgets:
pathName add entryPath ?option value ...?
Creates a new list entry with the pathname entry
Path. A list entry must be created after its parent
is created (unless this entry is a top-level entry,
which has no parent). This command returns the
entryPath of the newly created list entry. The fol
lowing configuration options can be given to con
figure 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
Specifies a string to associate with this
list entry. This string can be queried by
the info widget command. The application
programmer can use the -data option to asso
ciate the list entry with the data it repre
sents.
-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 window. If this option is not
specified, then by default the type speci
fied by this HList widget's -itemtype option
is used.
-state Specifies whether this entry can be selected
or invoked by the user. Must be either nor
mal or disabled.
The add widget command 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 the tixDisplayStyle manual
page for a list of the configuration options for each of
the display item types.
pathName 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 entryPath of the new entry will be foo.1,
foo.2, ... etc. This command returns the entryPath
of the newly created list entry. option can be any
option for the add widget command.
pathName anchor set 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.
pathName anchor clear
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 sta
tus.
Returns the current value of the configuration
option given by option. Option may have any of the
values accepted by the tixHList command.
pathName column width 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 sec
ond, 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:
pathName column width 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.
pathName column width col width
width must be in a form accepted by Tk_Get
Pixels(3).
pathName column width 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.
pathName configure ?option? ?value option value ...?
Query or modify the configuration options of the
widget. If no option is specified, returns a list
describing all of the available options for path
Name (see Tk_ConfigureInfo for information on the
format of this list). If option is specified with
no value, then the command returns a list describ
ing the one named option (this list will be identi
cal to the corresponding sublist of the value
returned if no option is specified). If one or
more option-value pairs are specified, then the
command modifies the given widget option(s) to have
the given value(s); in this case the command
returns an empty string. Option may have any of
the values accepted by the tixHList command.
pathName 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
ified.
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.
pathName dragsite set 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.
pathName dragsite clear
Remove the dragsite, if any, from the this HList
widget. This only removes the surrounding high
lights of the dragsite entry and does not affect
its selection status.
pathName dropsite set entryPath
Sets the dropsite to the list entry identified by
entryPath. The dropsite is used to indicate the
target of a grag-and-drop action. Currently drag-
and-drop functionality has not been implemented in
Tix yet.
pathName dropsite clear
Remove the dropsite, if any, from the this HList
widget. This only removes the surrounding high
lights of the dropsite entry and does not affect
its selection status.
pathName 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 widget command.
pathName entryconfigure entryPath ?option? ?value
option value ...?
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
Info for information on the format of this list.)
If option is specified with no value, then the com
mand 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 spec
ified). If one or more option-value pairs are spec
ified, then the command modifies the given
option(s) to have the given value(s); in this case
the command returns an empty string. Option may
have any of the values accepted by the add or add
child widget command. The exact set of options
depends on the value of the -itemtype option passed
to the the add or addchild widget command when this
list entry is created.
pathName 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 command
must be a valid integer. 0 indicates the first col
umn, 1 the second column, ... and so on. This com
mand supports the following options:
pathName 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.
pathName header configure col ?option? ?value
option value ...?
Query or modify the configuration options of
the header display item of the col-th col
umn. The header item must exist, or an error
will result. If no option is specified,
returns a list describing all of the avail
able options for the header display item
(see Tk_ConfigureInfo(3) for information on
the format of this list.) If option is spec
ified with no value, then the command
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
command modifies the given option(s) to have
the given value(s); in this case the command
returns an empty string. Option may have any
of the values accepted by the header create
widget command. The exact set of options
depends on the value of the -itemtype option
passed to the the header create widget
pathName header create col ?-itemtype type? ?option
value ...?
Creates a new display item as the header for
the col-th column. 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. Addi
tional 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 dis
play item or one of the following:
-borderwidth
Specifies the border width of this
header item.
-headerbackground
Specifies the background color of
this header item.
-relief
Specifies the relief type of the
border of this header item.
pathName header delete col
Deletes the header display item for the col-
th column.
pathName header exists col
Return true if an header display item exists
for the col-th column; return false other
wise.
pathName header size entryPath
If an header display item exists for the
col-th column , returns its size in a two
element list of the form {width height};
returns an error if the header display item
does not exist.
pathName hide option ?entryPath?
Makes some of entries invisible invisible without
deleting them. Option can be one of the following:
entry Hides the list entry identified by entry
Path.
options will be added in the next release.
pathName 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 indicator whether a directory is
opened or closed. option can be one of the follow
ing:
pathName indicator cget entryPath option
If the list entry given by entryPath has an
indicator, returns the value of the speci
fied option of the indicator. If the indica
tor doesn't exist, returns an error.
pathName 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 describ
ing all of the available options for the
indicator display item (see Tk_Configure
Info(3) for information on the format of
this list). If option is specified with no
value, then the command returns a list
describing the one named option (this list
will be identical to the corresponding sub
list of the value returned if no option is
specified). If one or more option-value
pairs are specified, then the command modi
fies the given option(s) to have the given
value(s); in this case the command returns
an empty string. Option may have any of the
values accepted by the indicator create wid
get command. The exact set of options
depends on the value of the -itemtype option
passed to the the indicator create widget
command when this display item was created.
pathName 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
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.
pathName indicator delete entryPath
Deletes the indicator display item for the
entry given by entryPath.
pathName indicator exists entryPath
Return true if an indicator display item
exists for the entry given by entryPath;
return false otherwise.
pathName 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.
pathName info option arg ...
Query information about the HList widget. option
can be one of the following:
pathName 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.
pathName info bbox 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.
pathName info children ?entryPath?
If entrpyPath is given, returns a list of
the entryPath's of its children entries.
Otherwise returns a list of the toplevel
entryPath's.
Returns the data associated with entryPath.
pathName 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.
pathName info dropsite
Returns the entryPath of the current drop
site, if any, of the HList widget. If the
dropsite is not set, returns the empty
string.
pathName info exists entryPath
Returns a boolean value indicating whether
the list entry entrpyPath exists.
pathName info hidden entryPath
Returns a boolean value indicating whether
the list entry entrpyPath is hidden or not.
pathName 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.
pathName info parent entryPath
Returns the name of the parent of the list
entry identified by entrpyPath. If entrpy
Path is a toplevel list entry, returns the
empty string.
pathName 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.
pathName info selection
Returns a list of selected entries in the
HList widget. If no entries are selectd,
returns an empty string.
pathName item option ?args ...?
Creates and configures the display items at indi
vidual columns the entries. The form of additional
of arguments depends on the choice of option:
pathName item cget entryPath col option
Returns the current value of the configure
option of the display item at the column
entryPath.
pathName item configure 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_ConfigureInfo(3) for
information on the format of this list). If
option is specified with no value, then the
command 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 command modifies the given
option(s) to have the given value(s); in
this case the command returns an empty
string. Option may have any of the values
accepted by the item create widget command.
The exact set of options depends on the
value of the -itemtype option passed to the
the item create widget command when this
display item was created.
pathName item create 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 config
ure the appearance of the display item. Each
option- value pair must be a valid option
for this type of display item.
pathName item delete entryPath col
Deletes the display item at the column des
ignated by col of the entry specified by
entryPath.
pathName item exists entryPath col
Returns true if there is a display item at
the column designated by col of the entry
specified by entryPath; returns false other
wise.
Given a y-coordinate within the HList window, this
command returns the entryPath of the (visible)
HList element nearest to that y-coordinate.
pathName 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 command 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.
pathName selection option arg ...
This command is used to adjust the selection within
a HList widget. It has several forms, depending on
option:
pathName selection clear ?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 selec
tion state of entries outside that range.
pathName selection get
This is an alias for the info selection wid
get command. ,
pathName selection includes entryPath
Returns 1 if the list entry indicated by
entryPath is currently selected; returns 0
otherwise.
pathName selection set 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.
pathName show option ?entryPath?
Show the entries that are hidden by the hide com
mand, option can be one of the following:
entry Shows the list entry identified by entry
Path.
Currently only the entry option is supported. Other
pathName xview args
This command is used to query and change the hori
zontal position of the information in the widget's
window. It can take any of the following forms:
pathName 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.
pathName 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.
pathName xview moveto fraction
Adjusts the view in the window so that frac
tion of the total width of the HList is off-
screen to the left. fraction must be a frac
tion between 0 and 1.
pathName xview scroll number what
This command 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 char
acters farther to the right become visible.
pathName yview ?args?
This command is used to query and change the verti
cal position of the entries in the widget's window.
It can take any of the following forms:
pathName 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
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 scroll
bars via the -yscrollcommand option.
pathName yview entryPath
Adjusts the view in the window so that the
list entry given by entryPath is displayed
at the top of the window.
pathName 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.
pathName yview scroll number what
This command 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 num
ber 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 procedure will be called with one param
eter, the entryPath of the highlighted entry. Only
one entry can be highlighted at a time. The -com
mand procedure 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 procedure will be called with one param
eter indicating the highlighted list entry. The
-command procedure 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.
can be selected. When the highlighted area is
changed, the -browsecmd procedure will be called
with an undefined parameter. It is the responsibil
ity of the -browsecmd procedure to find out the
exact highlighted selection in the HList. The -com
mand procedure 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 procedure will be called
with an undefined parameter. It is the responsibil
ity of the -browsecmd procedure to find out the
exact highlighted selection in the HList. The -com
mand procedure 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:
set h [tixHList .h -separator "/" -browsecmd browse \
-selectmode single -itemtype text]
$h add / -text /
$h add /home -text /home
$h add /home/ioi -text /home/ioi
$h add /home/foo -text /home/foo
$h add /usr -text /usr
$h add /usr/lib -text /usr/lib
pack $h
proc browse {file} {
puts "$file browsed"
}
BUGS
The fact that the display item at column 0 is implicitly
associated with the whole entry is probably a design bug.
result is that there is a large overlap between the item
command and the add, addchild, entrycget and entryconfig
ure commands. Whenever multiple columns exist, the pro
grammer should use ONLY the item command to create and
configure the display items in each column; the add, add
child, entrycget and entryconfigure should be used ONLY to
create and configure entries.
KEYWORDS
hierarchical listbox, widget
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