Gtk2::ComboBox(3) User Contributed Perl Documentation Gtk2::ComboBox(3)

Gtk2::ComboBox - A widget used to choose from a list of items

# the easy way:
$combobox = Gtk2::ComboBox->new_text;
foreach (@strings) {
    $combobox->append_text ($_);
}
$combobox->prepend_text ($another_string);
$combobox->insert_text ($index, $yet_another_string);
$combobox->remove_text ($index);
$text = $combobox->get_active_text;
# the full-featured way.  
# a combo box that shows stock ids and their images:
use constant ID_COLUMN => 0;
$model = Gtk2::ListStore->new ('Glib::String');
foreach (qw(gtk-ok gtk-cancel gtk-yes gtk-no gtk-save gtk-open)) {
    $model->set ($model->append, ID_COLUMN, $_);
}
$combo_box = Gtk2::ComboBox->new ($model);
# to display anything, you must pack cell renderers into
# the combobox, which implements the Gtk2::CellLayout interface.
$renderer = Gtk2::CellRendererPixbuf->new;
$combo_box->pack_start ($renderer, FALSE);
$combo_box->add_attribute ($renderer, stock_id => ID_COLUMN);
$renderer = Gtk2::CellRendererText->new;
$combo_box->pack_start ($renderer, TRUE);
$combo_box->add_attribute ($renderer, text => ID_COLUMN);
# select by index
$combo_box->set_active ($index);
$active_index = $combo_box->get_active;
# or by iter
$combo_box->set_active_iter ($iter);
$active_iter = $combo_box->get_active_iter;

Gtk2::ComboBox is a widget that allows the user to choose from a list of valid choices. The ComboBox displays the selected choice. When activated, the ComboBox displays a popup which allows the user to make a new choice.

Unlike its predecessors Gtk2::Combo and Gtk2::OptionMenu, the Gtk2::ComboBox uses the model-view pattern; the list of valid choices is specified in the form of a tree model, and the display of the choices can be adapted to the data in the model by using cell renderers, as you would in a tree view. This is possible since ComboBox implements the Gtk2::CellLayout interface. The tree model holding the valid choices is not restricted to a flat list; it can be a real tree, and the popup will reflect the tree structure.

In addition to the model-view API, ComboBox offers a simple API which is suitable for text-only combo boxes, and hides the complexity of managing the data in a model. It consists of the methods "new_text", "append_text", "insert_text", "prepend_text", "remove_text" and "get_active_text".

Glib::Object
+----Glib::InitiallyUnowned
     +----Gtk2::Object
          +----Gtk2::Widget
               +----Gtk2::Container
                    +----Gtk2::Bin
                         +----Gtk2::ComboBox

Glib::Object::_Unregistered::AtkImplementorIface
Gtk2::Buildable
Gtk2::CellLayout
Gtk2::CellEditable

widget = Gtk2::ComboBox->new ($model=undef)

$model (Gtk2::TreeModel)

widget = Gtk2::ComboBox->new_text

widget = Gtk2::ComboBox->new_with_model ($model=undef)

$model (Gtk2::TreeModel)

integer = $combo_box->get_active

$combo_box->set_active_iter ($iter)

$iter (Gtk2::TreeIter or undef)

$combo_box->set_active ($index)

$index (integer)

string = $combo_box->get_active_text

Since: gtk+ 2.6

boolean = $combo_box->get_add_tearoffs

Since: gtk+ 2.6

$combo_box->set_add_tearoffs ($add_tearoffs)

$add_tearoffs (boolean)

Since: gtk+ 2.6

$combo_box->append_text ($text)

$text (string)

Since: gtk+ 2.14

$combo_box->set_button_sensitivity ($sensitivity)

$sensitivity (Gtk2::SensitivityType)

Since: gtk+ 2.14

integer = $combo_box->get_column_span_column

Since: gtk+ 2.6

$combo_box->set_column_span_column ($column_span)

$column_span (integer)

boolean = $combo_box->get_focus_on_click

Since: gtk+ 2.6

$combo_box->set_focus_on_click ($focus_on_click)

$focus_on_click (boolean)

Since: gtk+ 2.6

$combo_box->insert_text ($position, $text)

  • $position (integer)
  • $text (string)

$combo_box->set_model ($model)

$model (Gtk2::TreeModel or undef)

Note that setting "undef" for no model is new in Gtk 2.6. (Both here or via "set_property".)

$combo_box->prepend_text ($text)

$text (string)

$combo_box->remove_text ($position)

$position (integer)

$combo_box->set_row_separator_func ($func, $data=undef)

  • $func (scalar)
  • $data (scalar)

Since: gtk+ 2.6

integer = $combo_box->get_row_span_column

Since: gtk+ 2.6

$combo_box->set_row_span_column ($row_span)

$row_span (integer)

string = $combo_box->get_title

Since: gtk+ 2.10

$combo_box->set_title ($title)

$title (string)

Since: gtk+ 2.10

integer = $combo_box->get_wrap_width

Since: gtk+ 2.6

$combo_box->set_wrap_width ($width)

$width (integer)

'active' (integer : default -1 : readable / writable / private / static-nick / static-blurb)
The item which is currently active
'add-tearoffs' (boolean : default false : readable / writable / private / static-nick / static-blurb)
Whether dropdowns should have a tearoff menu item
'button-sensitivity' (Gtk2::SensitivityType : default "auto" : readable / writable / private / static-nick / static-blurb)
Whether the dropdown button is sensitive when the model is empty
'column-span-column' (integer : default -1 : readable / writable / private / static-nick / static-blurb)
TreeModel column containing the column span values
'entry-text-column' (integer : default -1 : readable / writable / private / static-nick / static-blurb)
The column in the combo box's model to associate with strings from the entry if the combo was created with #GtkComboBox:has-entry = %TRUE
'focus-on-click' (boolean : default true : readable / writable / private / static-nick / static-blurb)
Whether the combo box grabs focus when it is clicked with the mouse
'has-entry' (boolean : default false : readable / writable / construct-only / private / static-nick / static-blurb)
Whether combo box has an entry
'has-frame' (boolean : default true : readable / writable / private / static-nick / static-blurb)
Whether the combo box draws a frame around the child
'model' (Gtk2::TreeModel : default undef : readable / writable / private / static-nick / static-blurb)
The model for the combo box
'popup-shown' (boolean : default false : readable / private / static-nick / static-blurb)
Whether the combo's dropdown is shown
'row-span-column' (integer : default -1 : readable / writable / private / static-nick / static-blurb)
TreeModel column containing the row span values
'tearoff-title' (string : default undef : readable / writable / private / static-nick / static-blurb)
A title that may be displayed by the window manager when the popup is torn-off
'wrap-width' (integer : default 0 : readable / writable / private / static-nick / static-blurb)
Wrap width for laying out the items in a grid

'appears-as-list' (boolean : default false : readable / private / static-nick / static-blurb)
Whether dropdowns should look like lists rather than menus
'arrow-size' (integer : default 15 : readable / private / static-nick / static-blurb)
The minimum size of the arrow in the combo box
'shadow-type' (Gtk2::ShadowType : default "none" : readable / private / static-nick / static-blurb)
Which kind of shadow to draw around the combo box

  • 'none' / 'GTK_SCROLL_NONE'
  • 'jump' / 'GTK_SCROLL_JUMP'
  • 'step-backward' / 'GTK_SCROLL_STEP_BACKWARD'
  • 'step-forward' / 'GTK_SCROLL_STEP_FORWARD'
  • 'page-backward' / 'GTK_SCROLL_PAGE_BACKWARD'
  • 'page-forward' / 'GTK_SCROLL_PAGE_FORWARD'
  • 'step-up' / 'GTK_SCROLL_STEP_UP'
  • 'step-down' / 'GTK_SCROLL_STEP_DOWN'
  • 'page-up' / 'GTK_SCROLL_PAGE_UP'
  • 'page-down' / 'GTK_SCROLL_PAGE_DOWN'
  • 'step-left' / 'GTK_SCROLL_STEP_LEFT'
  • 'step-right' / 'GTK_SCROLL_STEP_RIGHT'
  • 'page-left' / 'GTK_SCROLL_PAGE_LEFT'
  • 'page-right' / 'GTK_SCROLL_PAGE_RIGHT'
  • 'start' / 'GTK_SCROLL_START'
  • 'end' / 'GTK_SCROLL_END'

  • 'auto' / 'GTK_SENSITIVITY_AUTO'
  • 'on' / 'GTK_SENSITIVITY_ON'
  • 'off' / 'GTK_SENSITIVITY_OFF'

Gtk2, Glib::Object, Glib::InitiallyUnowned, Gtk2::Object, Gtk2::Widget, Gtk2::Container, Gtk2::Bin

Copyright (C) 2003-2011 by the gtk2-perl team.

This software is licensed under the LGPL. See Gtk2 for a full notice.

2022-05-29 perl v5.36.0