Provided by: libgtk2-perl-doc_1.2498-1_all 
NAME
Gtk2::ComboBox - A widget used to choose from a list of items
SYNOPSIS
# 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 = $combo_box->get_active_iter;
DESCRIPTION
Gtk2::ComboBox is a widget that allows the user to choose from a list of valid choices.
The ComboBox displays the selected choice. When activated, the ComboBox displays a popup
which allows the user to make a new choice.
Unlike its predecessors Gtk2::Combo and Gtk2::OptionMenu, the Gtk2::ComboBox uses the
model-view pattern; the list of valid choices is specified in the form of a tree model,
and the display of the choices can be adapted to the data in the model by using cell
renderers, as you would in a tree view. This is possible since ComboBox implements the
Gtk2::CellLayout interface. The tree model holding the valid choices is not restricted to
a flat list; it can be a real tree, and the popup will reflect the tree structure.
In addition to the model-view API, ComboBox offers a simple API which is suitable for
text-only combo boxes, and hides the complexity of managing the data in a model. It
consists of the methods "new_text", "append_text", "insert_text", "prepend_text",
"remove_text" and "get_active_text".
HIERARCHY
Glib::Object
+----Glib::InitiallyUnowned
+----Gtk2::Object
+----Gtk2::Widget
+----Gtk2::Container
+----Gtk2::Bin
+----Gtk2::ComboBox
INTERFACES
Glib::Object::_Unregistered::AtkImplementorIface
Gtk2::Buildable
Gtk2::CellLayout
Gtk2::CellEditable
METHODS
widget = Gtk2::ComboBox->new ($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
treeiter = $combo_box->get_active_iter
$combo_box->set_active_iter ($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)
sensitivitytype = $combo_box->get_button_sensitivity
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)
treemodel = $combo_box->get_model
$combo_box->set_model ($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->popdown
$combo_box->popup
$combo_box->prepend_text ($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)
PROPERTIES
'active' (integer : default -1 : readable / writable / private)
The item which is currently active
'add-tearoffs' (boolean : default false : readable / writable / private)
Whether dropdowns should have a tearoff menu item
'button-sensitivity' (Gtk2::SensitivityType : default "auto" : readable / writable /
private)
Whether the dropdown button is sensitive when the model is empty
'column-span-column' (integer : default -1 : readable / writable / private)
TreeModel column containing the column span values
'entry-text-column' (integer : default -1 : readable / writable / private)
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)
Whether the combo box grabs focus when it is clicked with the mouse
'has-entry' (boolean : default false : readable / writable / construct-only / private)
Whether combo box has an entry
'has-frame' (boolean : default true : readable / writable / private)
Whether the combo box draws a frame around the child
'model' (Gtk2::TreeModel : default undef : readable / writable / private)
The model for the combo box
'popup-shown' (boolean : default false : readable / private)
Whether the combo's dropdown is shown
'row-span-column' (integer : default -1 : readable / writable / private)
TreeModel column containing the row span values
'tearoff-title' (string : default undef : readable / writable / private)
A title that may be displayed by the window manager when the popup is torn-off
'wrap-width' (integer : default 0 : readable / writable / private)
Wrap width for laying out the items in a grid
STYLE PROPERTIES
'appears-as-list' (boolean : default false : readable / private)
Whether dropdowns should look like lists rather than menus
'arrow-size' (integer : default 15 : readable / private)
The minimum size of the arrow in the combo box
'shadow-type' (Gtk2::ShadowType : default "none" : readable / private)
Which kind of shadow to draw around the combo box
SIGNALS
changed (Gtk2::ComboBox)
move-active (Gtk2::ComboBox, Gtk2::ScrollType)
boolean = popdown (Gtk2::ComboBox)
popup (Gtk2::ComboBox)
ENUMS AND FLAGS
enum Gtk2::ScrollType
• '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'
enum Gtk2::SensitivityType
• 'auto' / 'GTK_SENSITIVITY_AUTO'
• 'on' / 'GTK_SENSITIVITY_ON'
• 'off' / 'GTK_SENSITIVITY_OFF'
SEE ALSO
Gtk2, Glib::Object, Glib::InitiallyUnowned, Gtk2::Object, Gtk2::Widget, Gtk2::Container,
Gtk2::Bin
COPYRIGHT
Copyright (C) 2003-2011 by the gtk2-perl team.
This software is licensed under the LGPL. See Gtk2 for a full notice.