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Member "SAOImageDS9/tk8.6/doc/ttk_combobox.n" (13 Nov 2019, 6192 Bytes) of package /linux/misc/ds9.8.1.tar.gz:


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ttk::combobox

NAME
SYNOPSIS
DESCRIPTION
WIDGET-SPECIFIC OPTIONS
WIDGET COMMAND
VIRTUAL EVENTS
STYLING OPTIONS
SEE ALSO
KEYWORDS

NAME

ttk::combobox − text field with popdown selection list

SYNOPSIS

ttk::combobox pathName ?options?

DESCRIPTION

A ttk::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. −class

−cursor

−takefocus −style

WIDGET-SPECIFIC OPTIONS

[−exportselection exportSelection] Boolean value. If set, the widget selection is linked to the X selection. [−justify justify] Specifies how the text is aligned within the widget. Must be one of left, center, or right. [−height height] Specifies the height of the pop-down listbox, in rows. [−postcommand postCommand] A Tcl script to evaluate immediately before displaying the listbox. The −postcommand script may specify the −values to display. [−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] Specifies the name of a global variable whose value is linked to the widget value. Whenever the variable changes value the widget value is updated, and vice versa. [−values values] Specifies the list of values to display in the drop-down listbox. [−width width] Specifies an integer value indicating the desired width of the entry window, in average-size characters of the widget’s font.

WIDGET COMMAND

The following subcommands are possible for combobox widgets:
pathName
current ?newIndex?

If newIndex is supplied, sets the combobox value to the element at position newIndex in the list of −values (in addition to integers, the end index is supported and indicates the last element of the list). 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 set value

Sets the value of the combobox to value.

The combobox widget also supports the following ttk::entry widget subcommands (see ttk::entry(n) for details):

bbox delete icursor index insert selection xview The combobox widget also supports the following generic ttk::widget widget subcommands (see ttk::widget(n) for details): cget configure identify instate state

VIRTUAL EVENTS

The combobox widget generates a <<ComboboxSelected>> virtual event when the user selects an element from the list of values. If the selection action unposts the listbox, this event is delivered after the listbox is unposted.

STYLING OPTIONS

The class name for a ttk::combobox is TCombobox. The ttk::combobox uses the entry and listbox widgets internally. The listbox frame has a class name of ComboboxPopdownFrame.

Dynamic states: disabled, focus, pressed, readonly.

TCombobox styling options configurable with ttk::style are:

−arrowcolor color
−arrowsize
amount
−background
color
−bordercolor
color
−darkcolor
color
−focusfill
color
−foreground
color
−fieldbackground
color

Can only be changed when using non-native and non-graphical themes.

−insertwidth amount
−lightcolor
color
−padding
padding
−postoffset
padding
−selectbackground
color

Text entry select background.

−selectforeground color

Text entry select foreground.

The ttk::combobox popdown listbox cannot be configured using ttk::style nor via the widget configure command. The listbox can be configured using the option database.

option add *TCombobox*Listbox.background color
option add *TCombobox*Listbox.font font
option add *TCombobox*Listbox.foreground color
option add *TCombobox*Listbox.selectBackground color
option add *TCombobox*Listbox.selectForeground color

To configure a specific listbox (subject to future change): set popdown [ttk::combobox::PopdownWindow .mycombobox] $popdown.f.l configure −font font

ComboboxPopdownFrame styling options configurable with ttk::style are:

−borderwidth amount
−relief
relief

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(n), ttk::entry(n)

KEYWORDS

choice, entry, list box, text box, widget