tixTree(n) Tix Built-In Commands tixTree(n)
tixTree - Create and manipulate tixTree widgets
tixTree pathName ?options?
The TixTree class is derived from the TixScrolledHList class and inherits all the com-
mands, options and subwidgets of its super-class.
TixTree supports all the standard options of a frame widget. See the options(n) manual
entry for details on the standard options.
[-browsecmd browseCmd] Specifies a command to call whenever the user browses on an entry
(usually by single-clicking on the entry). The command is called with one argument, the
pathname of the entry. [-closecmd closeCmd] Specifies a command to call whenever an entry
needs to be closed (See the BINDINGS section below). This command is called with one argu-
ment, the pathname of the entry. This command should perform appropriate actions to close
the specified entry. If the -closecmd option is not specified, the default closing action
is to hide all child entries of the specified entry. [-command command] Specifies a com-
mand to call whenever the user activates an entry (usually by double-clicking on the
entry). The command is called with one argument, the pathname of the entry. [-ignorein-
voke ignoreInvoke] A Boolean value that specifies when a branch should be opened or
closed. A branch will always be opened or closed when the user presses the (+) and (-)
indicators. However, when the user invokes a branch (by doublc-clicking or pressing
<Return>), the branch will be opened or closed only if -ignoreinvoke is set to false (the
[-opencmd openCmd] Specifies a command to call whenever an entry needs to be opened (See
the BINDINGS section below). This command is called with one argument, the pathname of the
entry. This command should perform appropriate actions to open the specified entry. If the
-opencmd option is not specified, the default opening action is to show all the child
entries of the specified entry.
The hierarchical listbox that displays the tree.
The horizontal scrollbar subwidget.
The vertical scrollbar subwidget.
The tixTree command creates a new window (given by the pathName argument) and makes it
into a Tree widget. Additional options, described above, may be specified on the command
line or in the option database to configure aspects of the Tree widget such as its cursor
The Tree widget can be used to display hierachical data in a tree form. The user can
adjust the view of the tree by opening or closing parts of the tree.
To display a static tree structure, you can add the entries into the hlist subwidget and
hide any entries as desired. Then you can call the autosetmode method. This will set up
the Tree widget so that it handles all the open and close events automatically.
The above method is not applicable if you want to maintain a dynamic tree structure, i.e,
you do not know all the entries in the tree and you need to add or delete entries subse-
quently. To do this, you should first create the entries in the hlist subwidget. Then, use
the setmode method to indicate the entries that can be opened or closed, and use the
-opencmd and -closecmd options to handle the opening and closing events.
The tixTree command creates a new Tcl command whose name is the same as the path name of
the Tree'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 Tree widget's path name.
Option and the args determine the exact behavior of the command. The following commands
are possible for Tree widgets:
This command calls the setmode method for all the entries in this Tree widget: if
an entry has no child entries, its mode is set to none. Otherwise, if the entry has
any hidden child entries, its mode is set to open; otherwise its mode is set to
pathName cget option
Returns the current value of the configuration option given by option. Option may
have any of the values accepted by the tixTree command.
pathName close entryPath
Close the entry given by entryPath if its mode is close.
pathName configure ?option? ?value option value ...?
Query or modify the configuration options of the widget. If no option is speci-
fied, returns a list describing all of the available options for pathName (see
Tk_ConfigureInfo for information on the format of this list). If option is speci-
fied 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 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 tixTree command.
pathName getmode entryPath
Returns the current mode of the entry given by entryPath.
pathName open entryPath
Open the entry givaen by entryPath if its mode is open.
pathName setmode entryPath mode
This command is used to indicate whether the entry given by entryPath has children
entries and whether the children are visible. mode must be one of open, close or
none. If mode is set to open, a (+) indicator is drawn next the the entry. If mode
is set to close, a (-) indicator is drawn next the the entry. If mode is set to
none, no indicators will be drawn for this entry. The default mode is none. The
open mode indicates the entry has hidden children and this entry can be opened by
the user. The close mode indicates that all the children of the entry are now visi-
ble and the entry can be closed by the user.
pathName subwidget name ?args?
When no options are given, this command returns the pathname of the subwidget of
the specified name.
When options are given, the widget command of the specified subwidget will be
called with these options.
The basic mouse and keyboard bindings of the Tree widget are the same as the bindings of
the HList widget.
In addition, the entries can be opened or closed under the following conditions:
 If the mode of the entry is open, it can be opened by clicking on its (+) indicator
or double-clicking on the entry.
 If the mode of the entry is close, it can be closed by clicking on its (-) indica-
tor or double-clicking on the entry.
Tix 4.0 tixTree(n)