CSS nodes

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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.

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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.

gtk_combo_box_new ()

GtkWidget *
gtk_combo_box_new (void);

Creates a new empty GtkComboBox.

Since: 2.4

gtk_combo_box_new_with_entry ()

GtkWidget *
gtk_combo_box_new_with_entry (void);

Creates a new empty GtkComboBox with an entry.

Since: 2.24

gtk_combo_box_new_with_model ()

GtkWidget *
gtk_combo_box_new_with_model (GtkTreeModel *model);

Creates a new GtkComboBox with the model initialized to model .

Since: 2.4

gtk_combo_box_new_with_model_and_entry ()

GtkWidget *
gtk_combo_box_new_with_model_and_entry
                               (GtkTreeModel *model);

Creates a new empty GtkComboBox with an entry and with the model initialized to model .

Since: 2.24

gtk_combo_box_new_with_area ()

GtkWidget *
gtk_combo_box_new_with_area (GtkCellArea *area);

Creates a new empty GtkComboBox using area to layout cells.

gtk_combo_box_new_with_area_and_entry ()

GtkWidget *
gtk_combo_box_new_with_area_and_entry (GtkCellArea *area);

Creates a new empty GtkComboBox with an entry.

The new combo box will use area to layout cells.

gtk_combo_box_get_wrap_width ()

gint
gtk_combo_box_get_wrap_width (GtkComboBox *combo_box);

Returns the wrap width which is used to determine the number of columns for the popup menu. If the wrap width is larger than 1, the combo box is in table mode.

Since: 2.6

gtk_combo_box_set_wrap_width ()

void
gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
                              gint width);

Sets the wrap width of combo_box to be width . The wrap width is basically the preferred number of columns when you want the popup to be layed out in a table.

Since: 2.4

gtk_combo_box_get_row_span_column ()

gint
gtk_combo_box_get_row_span_column (GtkComboBox *combo_box);

Returns the column with row span information for combo_box .

Since: 2.6

gtk_combo_box_set_row_span_column ()

void
gtk_combo_box_set_row_span_column (GtkComboBox *combo_box,
                                   gint row_span);

Sets the column with row span information for combo_box to be row_span . The row span column contains integers which indicate how many rows an item should span.

Since: 2.4

gtk_combo_box_get_column_span_column ()

gint
gtk_combo_box_get_column_span_column (GtkComboBox *combo_box);

Returns the column with column span information for combo_box .

Since: 2.6

gtk_combo_box_set_column_span_column ()

void
gtk_combo_box_set_column_span_column (GtkComboBox *combo_box,
                                      gint column_span);

Sets the column with column span information for combo_box to be column_span . The column span column contains integers which indicate how many columns an item should span.

Since: 2.4

gtk_combo_box_get_active ()

gint
gtk_combo_box_get_active (GtkComboBox *combo_box);

Returns the index of the currently active item, or -1 if there’s no active item. If the model is a non-flat treemodel, and the active item is not an immediate child of the root of the tree, this function returns gtk_tree_path_get_indices (path)[0], where path is the GtkTreePath of the active item.

Since: 2.4

gtk_combo_box_set_active ()

void
gtk_combo_box_set_active (GtkComboBox *combo_box,
                          gint index_);

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

Since: 2.4

gtk_combo_box_get_active_iter ()

gboolean
gtk_combo_box_get_active_iter (GtkComboBox *combo_box,
                               GtkTreeIter *iter);

Sets iter to point to the currently active item, if any item is active. Otherwise, iter is left unchanged.

Since: 2.4

gtk_combo_box_set_active_iter ()

void
gtk_combo_box_set_active_iter (GtkComboBox *combo_box,
                               GtkTreeIter *iter);

Sets the current active item to be the one referenced by iter , or unsets the active item if iter is NULL.

Since: 2.4

gtk_combo_box_get_id_column ()

gint
gtk_combo_box_get_id_column (GtkComboBox *combo_box);

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

Since: 3.0

gtk_combo_box_set_id_column ()

void
gtk_combo_box_set_id_column (GtkComboBox *combo_box,
                             gint id_column);

Sets the model column which combo_box should use to get string IDs for values from. The column id_column in the model of combo_box must be of type G_TYPE_STRING.

Since: 3.0

gtk_combo_box_get_active_id ()

const gchar *
gtk_combo_box_get_active_id (GtkComboBox *combo_box);

Returns the ID of the active row of combo_box . This value is taken from the active row and the column specified by the “id-column” property of combo_box (see gtk_combo_box_set_id_column()).

The returned value is an interned string which means that you can compare the pointer by value to other interned strings and that you must not free it.

If the “id-column” property of combo_box is not set, or if no row is active, or if the active row has a NULL ID value, then NULL is returned.

Since: 3.0

gtk_combo_box_set_active_id ()

gboolean
gtk_combo_box_set_active_id (GtkComboBox *combo_box,
                             const gchar *active_id);

Changes the active row of combo_box to the one that has an ID equal to active_id , or unsets the active row if active_id is NULL. Rows having a NULL ID string cannot be made active by this function.

If the “id-column” property of combo_box is unset or if no row has the given ID then the function does nothing and returns FALSE.

Since: 3.0

gtk_combo_box_get_model ()

GtkTreeModel *
gtk_combo_box_get_model (GtkComboBox *combo_box);

Returns the GtkTreeModel which is acting as data source for combo_box .

Since: 2.4

gtk_combo_box_set_model ()

void
gtk_combo_box_set_model (GtkComboBox *combo_box,
                         GtkTreeModel *model);

Sets the model used by combo_box to be model . Will unset a previously set model (if applicable). If model is NULL, then it will unset the model.

Note that this function does not clear the cell renderers, you have to call gtk_cell_layout_clear() yourself if you need to set up different cell renderers for the new model.

Since: 2.4

gtk_combo_box_popup_for_device ()

void
gtk_combo_box_popup_for_device (GtkComboBox *combo_box,
                                GdkDevice *device);

Pops up the menu or dropdown list of combo_box , the popup window will be grabbed so only device and its associated pointer/keyboard are the only GdkDevices able to send events to it.

Since: 3.0

gtk_combo_box_popup ()

void
gtk_combo_box_popup (GtkComboBox *combo_box);

Pops up the menu or dropdown list of combo_box .

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

Before calling this, combo_box must be mapped, or nothing will happen.

Since: 2.4

gtk_combo_box_popdown ()

void
gtk_combo_box_popdown (GtkComboBox *combo_box);

Hides the menu or dropdown list of combo_box .

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

Since: 2.4

gtk_combo_box_get_popup_accessible ()

AtkObject *
gtk_combo_box_get_popup_accessible (GtkComboBox *combo_box);

Gets the accessible object corresponding to the combo box’s popup.

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

Since: 2.6

gtk_combo_box_get_row_separator_func ()

GtkTreeViewRowSeparatorFunc
gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box);

Returns the current row separator function.

[skip]

Since: 2.6

gtk_combo_box_set_row_separator_func ()

void
gtk_combo_box_set_row_separator_func (GtkComboBox *combo_box,
                                      GtkTreeViewRowSeparatorFunc func,
                                      gpointer data,
                                      GDestroyNotify destroy);

Sets the row separator function, which is used to determine whether a row should be drawn as a separator. If the row separator function is NULL, no separators are drawn. This is the default value.

Since: 2.6

gtk_combo_box_set_add_tearoffs ()

void
gtk_combo_box_set_add_tearoffs (GtkComboBox *combo_box,
                                gboolean add_tearoffs);

Sets whether the popup menu should have a tearoff menu item.

Since: 2.6

gtk_combo_box_get_add_tearoffs ()

gboolean
gtk_combo_box_get_add_tearoffs (GtkComboBox *combo_box);

Gets the current value of the :add-tearoffs property.

gtk_combo_box_set_title ()

void
gtk_combo_box_set_title (GtkComboBox *combo_box,
                         const gchar *title);

Sets the menu’s title in tearoff mode.

Since: 2.10

gtk_combo_box_get_title ()

const gchar *
gtk_combo_box_get_title (GtkComboBox *combo_box);

Gets the current title of the menu in tearoff mode. See gtk_combo_box_set_add_tearoffs().

Since: 2.10

gtk_combo_box_set_focus_on_click ()

void
gtk_combo_box_set_focus_on_click (GtkComboBox *combo,
                                  gboolean focus_on_click);

Sets whether the combo box will grab focus when it is clicked with the mouse. Making mouse clicks not grab focus is useful in places like toolbars where you don’t want the keyboard focus removed from the main area of the application.

Since: 2.6

gtk_combo_box_get_focus_on_click ()

gboolean
gtk_combo_box_get_focus_on_click (GtkComboBox *combo);

Returns whether the combo box grabs focus when it is clicked with the mouse. See gtk_combo_box_set_focus_on_click().

Since: 2.6

gtk_combo_box_set_button_sensitivity ()

void
gtk_combo_box_set_button_sensitivity (GtkComboBox *combo_box,
                                      GtkSensitivityType sensitivity);

Sets whether the dropdown button of the combo box should be always sensitive (GTK_SENSITIVITY_ON), never sensitive (GTK_SENSITIVITY_OFF) or only if there is at least one item to display (GTK_SENSITIVITY_AUTO).

Since: 2.14

gtk_combo_box_get_button_sensitivity ()

GtkSensitivityType
gtk_combo_box_get_button_sensitivity (GtkComboBox *combo_box);

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

Since: 2.14

gtk_combo_box_get_has_entry ()

gboolean
gtk_combo_box_get_has_entry (GtkComboBox *combo_box);

Returns whether the combo box has an entry.

Since: 2.24

gtk_combo_box_set_entry_text_column ()

void
gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
                                     gint text_column);

Sets the model column which combo_box should use to get strings from to be text_column . The column text_column in the model of combo_box must be of type G_TYPE_STRING.

This is only relevant if combo_box has been created with “has-entry” as TRUE.

Since: 2.24

gtk_combo_box_get_entry_text_column ()

gint
gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box);

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

Since: 2.24

gtk_combo_box_set_popup_fixed_width ()

void
gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
                                     gboolean fixed);

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

Since: 3.0

gtk_combo_box_get_popup_fixed_width ()

gboolean
gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box);

Gets whether the popup uses a fixed width matching the allocated width of the combo box.

Since: 3.0

struct GtkComboBox

struct GtkComboBox;

struct GtkComboBoxClass

struct GtkComboBoxClass {
  GtkBinClass parent_class;

  /* signals */
  void     (* changed)           (GtkComboBox *combo_box);
  gchar   *(* format_entry_text) (GtkComboBox *combo_box,
                                  const gchar *path);
};

The “active” property

  “active”                   int

The item which is currently active. If the model is a non-flat treemodel, and the active item is not an immediate child of the root of the tree, this property has the value gtk_tree_path_get_indices (path)[0], where path is the GtkTreePath of the active item.

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= -1

Default value: -1

Since: 2.4

The “active-id” property

  “active-id”                char *

The value of the ID column of the active row.

Owner: GtkComboBox

Flags: Read / Write

Default value: NULL

Since: 3.0

The “add-tearoffs” property

  “add-tearoffs”             gboolean

The add-tearoffs property controls whether generated menus have tearoff menu items.

Note that this only affects menu style combo boxes.

Owner: GtkComboBox

Flags: Read / Write

Default value: FALSE

Since: 2.6

The “button-sensitivity” property

  “button-sensitivity”       GtkSensitivityType

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

Owner: GtkComboBox

Flags: Read / Write

Default value: GTK_SENSITIVITY_AUTO

Since: 2.14

The “cell-area” property

  “cell-area”                GtkCellArea *

The GtkCellArea used to layout cell renderers for this combo box.

If no area is specified when creating the combo box with gtk_combo_box_new_with_area() a horizontally oriented GtkCellAreaBox will be used.

Owner: GtkComboBox

Flags: Read / Write / Construct Only

Since: 3.0

The “column-span-column” property

  “column-span-column”       int

If this is set to a non-negative value, it must be the index of a column of type G_TYPE_INT in the model. The value in that column for each item will determine how many columns that item will span in the popup. Therefore, values in this column must be greater than zero, and the sum of an item’s column position + span should not exceed “wrap-width”.

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= -1

Default value: -1

Since: 2.4

The “entry-text-column” property

  “entry-text-column”        int

The column in the combo box's model to associate with strings from the entry if the combo was created with “has-entry” = TRUE.

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= -1

Default value: -1

Since: 2.24

The “has-entry” property

  “has-entry”                gboolean

Whether the combo box has an entry.

Owner: GtkComboBox

Flags: Read / Write / Construct Only

Default value: FALSE

Since: 2.24

The “has-frame” property

  “has-frame”                gboolean

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

Owner: GtkComboBox

Flags: Read / Write

Default value: TRUE

Since: 2.6

The “id-column” property

  “id-column”                int

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

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= -1

Default value: -1

Since: 3.0

The “model” property

  “model”                    GtkTreeModel *

The model from which the combo box takes the values shown in the list.

Owner: GtkComboBox

Flags: Read / Write

Since: 2.4

The “popup-fixed-width” property

  “popup-fixed-width”        gboolean

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

Owner: GtkComboBox

Flags: Read / Write

Default value: TRUE

Since: 3.0

The “popup-shown” property

  “popup-shown”              gboolean

Whether the combo boxes dropdown is popped up. Note that this property is mainly useful, because it allows you to connect to notify::popup-shown.

Owner: GtkComboBox

Flags: Read

Default value: FALSE

Since: 2.10

The “row-span-column” property

  “row-span-column”          int

If this is set to a non-negative value, it must be the index of a column of type G_TYPE_INT in the model. The value in that column for each item will determine how many rows that item will span in the popup. Therefore, values in this column must be greater than zero.

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= -1

Default value: -1

Since: 2.4

The “tearoff-title” property

  “tearoff-title”            char *

A title that may be displayed by the window manager when the popup is torn-off.

Owner: GtkComboBox

Flags: Read / Write

Default value: NULL

Since: 2.10

The “wrap-width” property

  “wrap-width”               int

If wrap-width is set to a positive value, items in the popup will be laid out along multiple columns, starting a new row on reaching the wrap width.

Owner: GtkComboBox

Flags: Read / Write

Allowed values: >= 0

Default value: 0

Since: 2.4

The “appears-as-list” style property

  “appears-as-list”          gboolean

Whether dropdowns should look like lists rather than menus.

Owner: GtkComboBox

Flags: Read

Default value: FALSE

The “arrow-scaling” style property

  “arrow-scaling”            float

Sets the amount of space used up by the combobox arrow, proportional to the font size.

Owner: GtkComboBox

Flags: Read

Allowed values: [0,2]

Default value: 1

The “arrow-size” style property

  “arrow-size”               int

Sets the minimum size of the arrow in the combo box. Note that the arrow size is coupled to the font size, so in case a larger font is used, the arrow will be larger than set by arrow size.

Owner: GtkComboBox

Flags: Read

Allowed values: >= 0

Default value: 15

Since: 2.12

The “shadow-type” style property

  “shadow-type”              GtkShadowType

Which kind of shadow to draw around the combo box.

Owner: GtkComboBox

Flags: Read

Default value: GTK_SHADOW_NONE

Since: 2.12

The “changed” signal

void
user_function (GtkComboBox *widget,
               gpointer     user_data)

The changed signal is emitted when the active item is changed. The can be due to the user selecting a different item from the list, or due to a call to gtk_combo_box_set_active_iter(). It will also be emitted while typing into the entry of a combo box with an entry.

Flags: Run Last

Since: 2.4

The “format-entry-text” signal

char*
user_function (GtkComboBox *combo,
               char        *path,
               gpointer     user_data)

For combo boxes that are created with an entry (See GtkComboBox:has-entry).

A signal which allows you to change how the text displayed in a combo box's entry is displayed.

Connect a signal handler which returns an allocated string representing path . That string will then be used to set the text in the combo box's entry. The default signal handler uses the text from the GtkComboBox::entry-text-column model column.

Here's an example signal handler which fetches data from the model and displays it in the entry.

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static gchar*
format_entry_text_callback (GtkComboBox *combo,
                            const gchar *path,
                            gpointer     user_data)
{
  GtkTreeIter iter;
  GtkTreeModel model;
  gdouble      value;

  model = gtk_combo_box_get_model (combo);

  gtk_tree_model_get_iter_from_string (model, &iter, path);
  gtk_tree_model_get (model, &iter,
                      THE_DOUBLE_VALUE_COLUMN, &value,
                      -1);

  return g_strdup_printf ("%g", value);
}

Flags: Run Last

Since: 3.4

The “move-active” signal

void
user_function (GtkComboBox  *widget,
               GtkScrollType scroll_type,
               gpointer      user_data)

The ::move-active signal is a keybinding signal which gets emitted to move the active selection.

Flags: Action

Since: 2.12

The “popdown” signal

gboolean
user_function (GtkComboBox *button,
               gpointer     user_data)

The ::popdown signal is a keybinding signal which gets emitted to popdown the combo box list.

The default bindings for this signal are Alt+Up and Escape.

Flags: Action

Since: 2.12

The “popup” signal

void
user_function (GtkComboBox *widget,
               gpointer     user_data)

The ::popup signal is a keybinding signal which gets emitted to popup the combo box list.

The default binding for this signal is Alt+Down.

Flags: Action

Since: 2.12