combobox3tcl

Usage

Options

[-exportselection exportSelection ExportSelection] Boolean value. If set, the widget selection is linked to the X selection. [-justify justify Justify] Specifies how the text is aligned within the widget. One of left, center, or right. [-height height Height] Specifies the height of the pop-down listbox, in rows. [-postcommand postCommand PostCommand] A Tcl script to evaluate immediately before displaying the listbox. The -postcommand script may specify the -values to display. [-state state State] One of normal, readonly, or disabled. In the readonly state, the value may not be edited directly, and the user can only select one of the -values from the dropdown list. In the normal state, the text field is directly editable. In the disabled state, no interaction is possible. [-textvariable textVariable TextVariable] Specifies the name of a variable whose value is linked to the widget value. Whenever the variable changes value the widget value is updated, and vice versa. [-values values Values] Specifies the list of values to display in the drop-down listbox. [-width width Width] Specifies an integer value indicating the desired width of the entry window, in average-size characters of the widget's font.

Overview

A combobox combines a text field with a pop-down list of values; the user may select the value of the text field from among the values in the list.

Widget command

pathName cget option

Returns the current value of the specified option. See widget(n).

pathName configure ?option? ?value option value ...?

Modify or query widget options. See widget(n).

pathName current ?newIndex?

If newIndex is supplied, sets the combobox value to the element at position newIndex in the list of -values. Otherwise, returns the index of the current value in the list of -values or -1 if the current value does not appear in the list.

pathName get

Returns the current value of the combobox.

pathName identify x y

Returns the name of the element at position x, y, or the empty string if the coordinates are outside the window.

pathName instate statespec ?script?

Test the widget state. See widget(n).

pathName set value

Sets the value of the combobox to value.

pathName state ?stateSpec?

Modify or query the widget state. See widget(n).

The combobox widget also supports the following entry widget commands (see entry(n) for details): bbox delete icursor index insert selection xview

Virtual events

The combobox widget generates a <<ComboboxSelected>> virtual event when the user selects an element from the list of values. This event is generated after the listbox is unposted.