Class

GtkComboBox

Description [src]

class Gtk.ComboBox : Gtk.Widget {
  parent_instance: GtkWidget
}

A GtkComboBox is a widget that allows the user to choose from a list of valid choices.

An example GtkComboBox

The GtkComboBox displays the selected choice; when activated, the GtkComboBox displays a popup which allows the user to make a new choice.

The GtkComboBox 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 GtkComboBox implements the GtkCellLayout 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.

To allow the user to enter values not in the model, the GtkComboBox:has-entry property allows the GtkComboBox to contain a GtkEntry. This entry can be accessed by calling gtk_combo_box_get_child()() on the combo box.

For a simple list of textual choices, the model-view API of GtkComboBox can be a bit overwhelming. In this case, GtkComboBoxText offers a simple alternative. Both GtkComboBox and GtkComboBoxText can contain an entry.

CSS nodes

combobox
├── box.linked
│   ╰── button.combo
│       ╰── box
│           ├── cellview
│           ╰── arrow
╰── window.popup

A normal combobox contains a box with the .linked class, a button with the .combo class and inside those buttons, there are a cellview and an arrow.

combobox
├── box.linked
│   ├── entry.combo
│   ╰── button.combo
│       ╰── box
│           ╰── arrow
╰── window.popup

A GtkComboBox with an entry has a single CSS node with name combobox. It contains a box with the .linked class. That box contains an entry and a button, both with the .combo class added. The button also contains another node with name arrow.

Accessibility

GtkComboBox uses the GTK_ACCESSIBLE_ROLE_COMBO_BOX role.

Hierarchy

Ancestors

Implements

Constructors

gtk_combo_box_new

Creates a new empty GtkComboBox.

gtk_combo_box_new_with_entry

Creates a new empty GtkComboBox with an entry.

gtk_combo_box_new_with_model

Creates a new GtkComboBox with a model.

gtk_combo_box_new_with_model_and_entry

Creates a new empty GtkComboBox with an entry and a model.

Instance methods

gtk_combo_box_get_active

Returns the index of the currently active item.

gtk_combo_box_get_active_id

Returns the ID of the active row of combo_box.

gtk_combo_box_get_active_iter

Sets iter to point to the currently active item.

gtk_combo_box_get_button_sensitivity

Returns whether the combo box sets the dropdown button sensitive or not when there are no items in the model.

gtk_combo_box_get_child

Gets the child widget of combo_box.

gtk_combo_box_get_entry_text_column

Returns the column which combo_box is using to get the strings from to display in the internal entry.

gtk_combo_box_get_has_entry

Returns whether the combo box has an entry.

gtk_combo_box_get_id_column

Returns the column which combo_box is using to get string IDs for values from.

gtk_combo_box_get_model

Returns the GtkTreeModel of combo_box.

gtk_combo_box_get_popup_fixed_width

Gets whether the popup uses a fixed width.

gtk_combo_box_get_row_separator_func

Returns the current row separator function.

gtk_combo_box_popdown

Hides the menu or dropdown list of combo_box.

gtk_combo_box_popup

Pops up the menu or dropdown list of combo_box.

gtk_combo_box_popup_for_device

Pops up the menu of combo_box.

gtk_combo_box_set_active

Sets the active item of combo_box to be the item at index.

gtk_combo_box_set_active_id

Changes the active row of combo_box to the one that has an ID equal to active_id.

gtk_combo_box_set_active_iter

Sets the current active item to be the one referenced by iter.

gtk_combo_box_set_button_sensitivity

Sets whether the dropdown button of the combo box should update its sensitivity depending on the model contents.

gtk_combo_box_set_child

Sets the child widget of combo_box.

gtk_combo_box_set_entry_text_column

Sets the model column which combo_box should use to get strings from to be text_column.

gtk_combo_box_set_id_column

Sets the model column which combo_box should use to get string IDs for values from.

gtk_combo_box_set_model

Sets the model used by combo_box to be model.

gtk_combo_box_set_popup_fixed_width

Specifies whether the popup’s width should be a fixed width.

gtk_combo_box_set_row_separator_func

Sets the row separator function, which is used to determine whether a row should be drawn as a separator.

Methods inherited from GtkWidget (159)

gtk_widget_action_set_enabled

Enable or disable an action installed with gtk_widget_class_install_action().

gtk_widget_activate

For widgets that can be “activated” (buttons, menu items, etc.), this function activates them.

gtk_widget_activate_action

Looks up the action in the action groups associated with widget and its ancestors, and activates it.

gtk_widget_activate_action_variant

Looks up the action in the action groups associated with widget and its ancestors, and activates it.

gtk_widget_activate_default

Activates the default.activate action from widget.

gtk_widget_add_controller

Adds controller to widget so that it will receive events.

gtk_widget_add_css_class

Adds a style class to widget.

gtk_widget_add_mnemonic_label

Adds a widget to the list of mnemonic labels for this widget.

gtk_widget_add_tick_callback

Queues an animation frame update and adds a callback to be called before each frame.

gtk_widget_allocate

This function is only used by GtkWidget subclasses, to assign a size, position and (optionally) baseline to their child widgets.

gtk_widget_child_focus

Called by widgets as the user moves around the window using keyboard shortcuts.

gtk_widget_compute_bounds

Computes the bounds for widget in the coordinate space of target.

gtk_widget_compute_expand

Computes whether a container should give this widget extra space when possible.

gtk_widget_compute_point

Translates the given point in widget‘s coordinates to coordinates relative to target’s coordinate system.

gtk_widget_compute_transform

Computes a matrix suitable to describe a transformation from widget‘s coordinate system into target‘s coordinate system.

gtk_widget_contains

Tests if the point at (x, y) is contained in widget.

gtk_widget_create_pango_context

Creates a new PangoContext with the appropriate font map, font options, font description, and base direction for drawing text for this widget.

gtk_widget_create_pango_layout

Creates a new PangoLayout with the appropriate font map, font description, and base direction for drawing text for this widget.

gtk_drag_check_threshold

Checks to see if a drag movement has passed the GTK drag threshold.

gtk_widget_error_bell

Notifies the user about an input-related error on this widget.

gtk_widget_get_allocated_baseline

Returns the baseline that has currently been allocated to widget.

gtk_widget_get_allocated_height

Returns the height that has currently been allocated to widget.

gtk_widget_get_allocated_width

Returns the width that has currently been allocated to widget.

Methods inherited from GObject (42)

Methods inherited from GtkAccessible (10)

gtk_accessible_get_accessible_role

Retrieves the GtkAccessibleRole for the given GtkAccessible.

gtk_accessible_reset_property

Resets the accessible property to its default value.

gtk_accessible_reset_relation

Resets the accessible relation to its default value.

gtk_accessible_reset_state

Resets the accessible state to its default value.

gtk_accessible_update_property

Updates a list of accessible properties.

gtk_accessible_update_property_value

Updates an array of accessible properties.

gtk_accessible_update_relation

Updates a list of accessible relations.

gtk_accessible_update_relation_value

Updates an array of accessible relations.

gtk_accessible_update_state

Updates a list of accessible states. See the GtkAccessibleState documentation for the value types of accessible states.

gtk_accessible_update_state_value

Updates an array of accessible states.

Methods inherited from GtkBuildable (1)

gtk_buildable_get_buildable_id

Gets the ID of the buildable object.

Methods inherited from GtkCellEditable (3)

gtk_cell_editable_editing_done

Emits the GtkCellEditable::editing-done signal.

gtk_cell_editable_remove_widget

Emits the GtkCellEditable::remove-widget signal.

gtk_cell_editable_start_editing

Begins editing on a cell_editable.

Methods inherited from GtkCellLayout (10)

gtk_cell_layout_add_attribute

Adds an attribute mapping to the list in cell_layout.

gtk_cell_layout_clear

Unsets all the mappings on all renderers on cell_layout and removes all renderers from cell_layout.

gtk_cell_layout_clear_attributes

Clears all existing attributes previously set with gtk_cell_layout_set_attributes().

gtk_cell_layout_get_area

Returns the underlying GtkCellArea which might be cell_layout if called on a GtkCellArea or might be NULL if no GtkCellArea is used by cell_layout.

gtk_cell_layout_get_cells

Returns the cell renderers which have been added to cell_layout.

gtk_cell_layout_pack_end

Adds the cell to the end of cell_layout. If expand is FALSE, then the cell is allocated no more space than it needs. Any unused space is divided evenly between cells for which expand is TRUE.

gtk_cell_layout_pack_start

Packs the cell into the beginning of cell_layout. If expand is FALSE, then the cell is allocated no more space than it needs. Any unused space is divided evenly between cells for which expand is TRUE.

gtk_cell_layout_reorder

Re-inserts cell at position.

gtk_cell_layout_set_attributes

Sets the attributes in the parameter list as the attributes of cell_layout.

gtk_cell_layout_set_cell_data_func

Sets the GtkCellLayoutDataFunc to use for cell_layout.

Properties

Gtk.ComboBox:active

The item which is currently active.

Gtk.ComboBox:active-id

The value of the ID column of the active row.

Gtk.ComboBox:button-sensitivity

Whether the dropdown button is sensitive when the model is empty.

Gtk.ComboBox:child

The child widget.

Gtk.ComboBox:entry-text-column

The model column to associate with strings from the entry.

Gtk.ComboBox:has-entry

Whether the combo box has an entry.

Gtk.ComboBox:has-frame

The has-frame property controls whether a frame is drawn around the entry.

Gtk.ComboBox:id-column

The model column that provides string IDs for the values in the model, if != -1.

Gtk.ComboBox:model

The model from which the combo box takes its values.

Gtk.ComboBox:popup-fixed-width

Whether the popup’s width should be a fixed width matching the allocated width of the combo box.

Gtk.ComboBox:popup-shown

Whether the combo boxes dropdown is popped up.

Properties inherited from GtkAccessible (1)

Gtk.Accessible:accessible-role

The accessible role of the given GtkAccessible implementation.

Properties inherited from GtkCellEditable (1)

Gtk.CellEditable:editing-canceled

Indicates whether editing on the cell has been canceled.

Signals inherited from GObject (1)

Signals inherited from GtkCellEditable (2)

Gtk.CellEditable::editing-done

This signal is a sign for the cell renderer to update its value from the cell_editable.

Gtk.CellEditable::remove-widget

This signal is meant to indicate that the cell is finished editing, and the cell_editable widget is being removed and may subsequently be destroyed.

Class structure

struct GtkComboBoxClass {
  GtkWidgetClass parent_class;
  void (* changed) (
    GtkComboBox* combo_box
  );
  char* (* format_entry_text) (
    GtkComboBox* combo_box,
    const char* path
  );
  
}

Class members

`parent_class`	`GtkWidgetClass`
	The parent class.
`changed`	`void (* changed) ( GtkComboBox* combo_box )`
	No description available.
`format_entry_text`	`char* (* format_entry_text) ( GtkComboBox* combo_box, const char* path )`
	No description available.