## Tcl8.6.15/Tk8.6.15 Documentation > Tk Commands, version 8.6.15 > ttk_treeview

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  NAME
    ttk::treeview — hierarchical multicolumn data display widget
  SYNOPSIS
  DESCRIPTION
  STANDARD OPTIONS
    -class, undefined, undefined
    -cursor, cursor, Cursor
    -padding, padding, Padding
    -style, style, Style
    -takefocus, takeFocus, TakeFocus
    -xscrollcommand, xScrollCommand, ScrollCommand
    -yscrollcommand, yScrollCommand, ScrollCommand
  WIDGET-SPECIFIC OPTIONS
    -columns, columns, Columns
    -displaycolumns, displayColumns, DisplayColumns
    -height, height, Height
    -selectmode, selectMode, SelectMode
    -show, show, Show
      tree
      headings
  WIDGET COMMAND
    pathname bbox item ?column?
    pathname cget option
    pathname children item ?newchildren?
    pathname column column ?-option ?value -option value...?
      -id name
      -anchor anchor
      -minwidth minwidth
      -stretch boolean
      -width width
    pathname configure ?option? ?value option value ...?
    pathname delete itemList
    pathname detach itemList
    pathname exists item
    pathname focus ?item?
    pathname heading column ?-option ?value -option value...?
      -text text
      -image imageName
      -anchor anchor
      -command script
    pathname identify component x y
      pathname identify region x y
        heading
        separator
        tree
        cell
      pathname identify column x y
      pathname identify element x y
      pathname identify row x y
    pathname index item
    pathname insert parent index ?-id id? options...
    pathname instate statespec ?script?
    pathname item item ?-option ?value -option value...?
    pathname move item parent index
    pathname next item
    pathname parent item
    pathname prev item
    pathname see item
    pathname selection ?selop itemList?
      pathname selection set itemList
      pathname selection add itemList
      pathname selection remove itemList
      pathname selection toggle itemList
    pathname set item ?column? ?value?
    pathname state ?stateSpec?
    pathName tag args...
      pathName tag bind tagName ?sequence? ?script?
      pathName tag configure tagName ?option? ?value option value...?
      pathName tag has tagName ?item?
      pathName tag names
      pathName tag add tag items
      pathName tag remove tag ?items?
  ITEM OPTIONS
    -text, text, Text
    -image, image, Image
    -values, values, Values
    -open, open, Open
    -tags, tags, Tags
  TAG OPTIONS
    -foreground
    -background
    -font
    -image
  COLUMN IDENTIFIERS
  VIRTUAL EVENTS
    <<TreeviewSelect>>
    <<TreeviewOpen>>
    <<TreeviewClose>>
  STYLING OPTIONS
  SEE ALSO

### NAME

ttk::treeview — hierarchical multicolumn data display widget

### SYNOPSIS

ttk::treeview pathname ?options?

### DESCRIPTION

The ttk::treeview widget displays a hierarchical collection of items. Each item has a textual label, an optional image, and an optional list of data values. The data values are displayed in successive columns after the tree label.

The order in which data values are displayed may be controlled by setting the -displaycolumns widget option. The tree widget can also display column headings. Columns may be accessed by number or by symbolic names listed in the -columns widget option; see COLUMN IDENTIFIERS.

Each item is identified by a unique name. The widget will generate item IDs if they are not supplied by the caller. There is a distinguished root item, named {}. The root item itself is not displayed; its children appear at the top level of the hierarchy.

Each item also has a list of tags, which can be used to associate event bindings with individual items and control the appearance of the item.

Treeview widgets support horizontal and vertical scrolling with the standard -[xy]scrollcommand options and [xy]view widget commands.

### STANDARD OPTIONS

-class, undefined, undefined
-cursor, cursor, Cursor
-padding, padding, Padding
-style, style, Style
-takefocus, takeFocus, TakeFocus
-xscrollcommand, xScrollCommand, ScrollCommand
-yscrollcommand, yScrollCommand, ScrollCommand

### WIDGET-SPECIFIC OPTIONS

Command-Line Name: -columns
Database Name: columns
Database Class: Columns
  A list of column identifiers, specifying the number of columns and their names.

Command-Line Name: -displaycolumns
Database Name: displayColumns
Database Class: DisplayColumns
  A list of column identifiers (either symbolic names or integer indices) specifying which data columns are displayed and the order in which they appear, or the string #all. If set to #all (the default), all columns are shown in the order given.

Command-Line Name: -height
Database Name: height
Database Class: Height
  Specifies the number of rows which should be visible. Note: the requested width is determined from the sum of the column widths.

Command-Line Name: -selectmode
Database Name: selectMode
Database Class: SelectMode
  Controls how the built-in class bindings manage the selection. One of extended, browse, or none.

  If set to extended (the default), multiple items may be selected. If browse, only a single item will be selected at a time. If none, the selection will not be changed.

  Note that application code and tag bindings can set the selection however they wish, regardless of the value of -selectmode.

Command-Line Name: -show
Database Name: show
Database Class: Show
  A list containing zero or more of the following values, specifying which elements of the tree to display.

  tree
    Display tree labels in column #0.

  headings
    Display the heading row.

  The default is tree headings, i.e., show all elements.

  NOTE: Column #0 always refers to the tree column, even if -show tree is not specified.

### WIDGET COMMAND

pathname bbox item ?column?
  Returns the bounding box (relative to the treeview widget's window) of the specified item in the form x y width height. If column is specified, returns the bounding box of that cell. If the item is not visible (i.e., if it is a descendant of a closed item or is scrolled offscreen), returns the empty list. If the element is partially visible, the result gives the full area of the element, including any parts that are not visible.

pathname cget option
  Returns the current value of the specified option; see ttk::widget(n).

pathname children item ?newchildren?
  If newchildren is not specified, returns the list of children belonging to item.

  If newchildren is specified, replaces item's child list with newchildren. Items in the old child list not present in the new child list are detached from the tree. None of the items in newchildren may be an ancestor of item.

pathname column column ?-option ?value -option value...?
  Query or modify the options for the specified column. If no -option is specified, returns a dictionary of option/value pairs. If a single -option is specified, returns the value of that option. Otherwise, the options are updated with the specified values. The following options may be set on each column:

  -id name
    The column name. This is a read-only option. For example, [$pathname column #n -id] returns the data column associated with display column #n.

  -anchor anchor
    Specifies how the text in this column should be aligned with respect to the cell. Anchor is one of n, ne, e, se, s, sw, w, nw, or center.

  -minwidth minwidth
    The minimum width of the column in pixels. The treeview widget will not make the column any smaller than -minwidth when the widget is resized or the user drags a column separator. Default is 20 pixels.

  -stretch boolean
    Specifies whether or not the column width should be adjusted when the widget is resized or the user drags a column separator. Boolean may have any of the forms accepted by Tcl_GetBoolean. By default columns are stretchable.

  -width width
    The width of the column in pixels. Default is 200 pixels. The specified column width may be changed by Tk in order to honor -stretch and/or -minwidth, or when the widget is resized or the user drags a column separator.

  Use pathname column #0 to configure the tree column.

pathname configure ?option? ?value option value ...?
  Modify or query widget options; see ttk::widget(n).

pathname delete itemList
  Deletes each of the items in itemList and all of their descendants. The root item may not be deleted. See also: detach.

pathname detach itemList
  Unlinks all of the specified items in itemList from the tree. The items and all of their descendants are still present and may be reinserted at another point in the tree with the move operation, but will not be displayed until that is done. The root item may not be detached. See also: delete.

pathname exists item
  Returns 1 if the specified item is present in the tree, 0 otherwise.

pathname focus ?item?
  If item is specified, sets the focus item to item. Otherwise, returns the current focus item, or {} if there is none.

pathname heading column ?-option ?value -option value...?
  Query or modify the heading options for the specified column. Valid options are:

  -text text
    The text to display in the column heading.

  -image imageName
    Specifies an image to display to the right of the column heading.

  -anchor anchor
    Specifies how the heading text should be aligned. One of the standard Tk anchor values.

  -command script
    A script to evaluate when the heading label is pressed.

  Use pathname heading #0 to configure the tree column heading.

pathname identify component x y
  Returns a description of the specified component under the point given by x and y, or the empty string if no such component is present at that position. The values x and y may have any of the forms acceptable to Tk_GetPixels. The following subcommands are supported:

  pathname identify region x y
      Returns one of:

      heading
        Tree heading area; use [pathname identify column x y] to determine the heading number.

      separator
        Space between two column headings; [pathname identify column x y] will return the display column identifier of the heading to left of the separator.

      tree
        The tree area.

      cell
        A data cell.

    pathname identify item x y Returns the item ID of the item at position y.

  pathname identify column x y
    Returns the display column identifier of the cell at position x. The tree column has ID #0.

  pathname identify element x y
    The element at position x,y.

  pathname identify row x y
    Obsolescent synonym for pathname identify item.

  See COLUMN IDENTIFIERS for a discussion of display columns and data columns.

pathname index item
  Returns the integer index of item within its parent's list of children.

pathname insert parent index ?-id id? options...
  Creates a new item. parent is the item ID of the parent item, or the empty string {} to create a new top-level item. index is an integer, or the value end, specifying where in the list of parent's children to insert the new item. If index is less than or equal to zero, the new node is inserted at the beginning; if index is greater than or equal to the current number of children, it is inserted at the end. If -id is specified, it is used as the item identifier; id must not already exist in the tree. Otherwise, a new unique identifier is generated.

  pathname insert returns the item identifier of the newly created item. See ITEM OPTIONS for the list of available options.

pathname instate statespec ?script?
  Test the widget state; see ttk::widget(n).

pathname item item ?-option ?value -option value...?
  Query or modify the options for the specified item. If no -option is specified, returns a dictionary of option/value pairs. If a single -option is specified, returns the value of that option. Otherwise, the item's options are updated with the specified values. See ITEM OPTIONS for the list of available options.

pathname move item parent index
  Moves item to position index in parent's list of children. It is illegal to move an item under one of its descendants.

  If index is less than or equal to zero, item is moved to the beginning; if greater than or equal to the number of children, it is moved to the end.

pathname next item
  Returns the identifier of item's next sibling, or {} if item is the last child of its parent.

pathname parent item
  Returns the ID of the parent of item, or {} if item is at the top level of the hierarchy.

pathname prev item
  Returns the identifier of item's previous sibling, or {} if item is the first child of its parent.

pathname see item
  Ensure that item is visible: sets all of item's ancestors to -open true, and scrolls the widget if necessary so that item is within the visible portion of the tree.

pathname selection ?selop itemList?
  If selop is not specified, returns the list of selected items. Otherwise, selop is one of the following:

  pathname selection set itemList
    itemList becomes the new selection.

  pathname selection add itemList
    Add itemList to the selection

  pathname selection remove itemList
    Remove itemList from the selection

  pathname selection toggle itemList
    Toggle the selection state of each item in itemList.

pathname set item ?column? ?value?
  With one argument, returns a dictionary of column/value pairs for the specified item. With two arguments, returns the current value of the specified column. With three arguments, sets the value of column column in item item to the specified value. See also COLUMN IDENTIFIERS.

pathname state ?stateSpec?
  Modify or query the widget state; see ttk::widget(n).

pathName tag args...

  pathName tag bind tagName ?sequence? ?script?
    Add a Tk binding script for the event sequence sequence to the tag tagName. When an X event is delivered to an item, binding scripts for each of the item's -tags are evaluated in order as per bindtags(n).

    <KeyPress>, <KeyRelease>, and virtual events are sent to the focus item. <ButtonPress>, <ButtonRelease>, and <Motion> events are sent to the item under the mouse pointer. No other event types are supported.

    The binding script undergoes %-substitutions before evaluation; see bind(n) for details.

  pathName tag configure tagName ?option? ?value option value...?
    Query or modify the options for the specified tagName. If one or more option/value pairs are specified, sets the value of those options for the specified tag. If a single option is specified, returns the value of that option (or the empty string if the option has not been specified for tagName). With no additional arguments, returns a dictionary of the option settings for tagName. See TAG OPTIONS for the list of available options.

  pathName tag has tagName ?item?
    If item is specified, returns 1 or 0 depending on whether the specified item has the named tag. Otherwise, returns a list of all items which have the specified tag.

  pathName tag names
    Returns a list of all tags used by the widget.

  pathName tag add tag items
    Adds the specified tag to each of the listed items. If tag is already present for a particular item, then the -tags for that item are unchanged.

  pathName tag remove tag ?items?
    Removes the specified tag from each of the listed items. If items is omitted, removes tag from each item in the tree. If tag is not present for a particular item, then the -tags for that item are unchanged.

The treeview widget also supports the following generic ttk::widget widget subcommands (see ttk::widget(n) for details):

  xview | yview

### ITEM OPTIONS

The following item options may be specified for items in the insert and item widget commands.

Command-Line Name: -text
Database Name: text
Database Class: Text
  The textual label to display for the item.

Command-Line Name: -image
Database Name: image
Database Class: Image
  A Tk image, displayed to the left of the label.

Command-Line Name: -values
Database Name: values
Database Class: Values
  The list of values associated with the item.

  Each item should have the same number of values as the -columns widget option. If there are fewer values than columns, the remaining values are assumed empty. If there are more values than columns, the extra values are ignored.

Command-Line Name: -open
Database Name: open
Database Class: Open
  A boolean value indicating whether the item's children should be displayed (-open true) or hidden (-open false).

Command-Line Name: -tags
Database Name: tags
Database Class: Tags
  A list of tags associated with this item.

### TAG OPTIONS

The following options may be specified on tags:

-foreground
  Specifies the text foreground color.

-background
  Specifies the cell or item background color.

-font
  Specifies the font to use when drawing text.

-image
  Specifies the item image, in case the item's -image option is empty.

Tag priority is decided by the creation order: tags created first receive higher priority.

### COLUMN IDENTIFIERS

Column identifiers take any of the following forms:

- A symbolic name from the list of -columns.

- An integer n, specifying the nth data column.

- A string of the form #n, where n is an integer, specifying the nth display column.

NOTE: Item -values may be displayed in a different order than the order in which they are stored.

NOTE: Column #0 always refers to the tree column, even if -show tree is not specified.

A data column number is an index into an item's -values list; a display column number is the column number in the tree where the values are displayed. Tree labels are displayed in column #0. If -displaycolumns is not set, then data column n is displayed in display column #n+1. Again, column #0 always refers to the tree column.

### VIRTUAL EVENTS

The treeview widget generates the following virtual events.

<<TreeviewSelect>>
  Generated whenever the selection changes. It might also be generated when selection is affected but not actually changed. Further, multiple selection changes could happen before events can be processed leading to multiple events with the same visible selection.

<<TreeviewOpen>>
  Generated just before setting the focus item to -open true.

<<TreeviewClose>>
  Generated just after setting the focus item to -open false.

The focus and selection widget commands can be used to determine the affected item or items.

### STYLING OPTIONS

The class name for a ttk::treeview is Treeview. The treeview header class name is Heading. The treeview item class name is Item. The treeview cell class name is Cell.

Dynamic states: disabled, selected.

Treeview styling options configurable with ttk::style are:

-background color
-fieldbackground color
-font font
-foreground color
-indent amount

  Specifies how far items are indented from their parents. Defaults to 20 pixels. The value may have any of the forms acceptable to Tk_GetPixels.

-rowheight amount

  This is the standard height for an item. Defaults to 20 pixels. The value may have any of the forms acceptable to Tk_GetPixels. If -rowheight is not set by the style, it is set by measuring an item and a cell layout with the style's settings. This thus picks up the font and any focus ring or padding from the theme's layout. The -rowheight may need to be set to make sure that a row is large enough to contain any images.

  To adjust the -rowheight for the Treeview style, use the following code after tk scaling has been applied. Note that even if you do not support or change tk scaling in your program, your users may have it set in their .wishrc.

    ttk::style configure Treeview \
         -rowheight [expr {[font metrics font -linespace] + 2}]

Heading styling options configurable with ttk::style are:

-background color
-font font
-relief relief

Item styling options configurable with ttk::style are:

-foreground color
-indicatormargins padding
-indicatorsize amount
-padding padding

Cell styling options configurable with ttk::style are:

-padding padding

Some options are only available for specific themes.

See the ttk::style manual page for information on how to configure ttk styles.

### SEE ALSO

ttk::widget, listbox, image, bind
Copyright © 2004 Joe English