ComboBox

A GtkComboBox is a widget that allows the user to choose from a list of valid choices. The GtkComboBox displays the selected choice. When activated, the GtkComboBox displays a popup which allows the user to make a new choice. The style in which the selected value is displayed, and the style of the popup is determined by the current theme. It may be similar to a Windows-style combo box.

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 “has-entry” property allows the GtkComboBox to contain a gtk.Entry This entry can be accessed by calling Bin.getChild 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, gtk.ComboBoxText offers a simple alternative. Both GtkComboBox and gtk.ComboBoxText 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.

|[<!-- language="plain" -->
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.

class ComboBox : Bin , CellEditableIF , CellLayoutIF {

GtkComboBox* gtkComboBox;

GtkComboBox* getComboBoxStruct(bool transferOwnership);

void* getStruct();

this(GtkComboBox* gtkComboBox, bool ownedRef);

this(bool entry);

this(TreeModelIF model, bool entry);

this(CellArea area, bool entry);

static GType getType();

int getActive();

string getActiveId();

bool getActiveIter(TreeIter iter);

bool getAddTearoffs();

GtkSensitivityType getButtonSensitivity();

int getColumnSpanColumn();

int getEntryTextColumn();

bool getFocusOnClick();

bool getHasEntry();

int getIdColumn();

TreeModelIF getModel();

ObjectAtk getPopupAccessible();

bool getPopupFixedWidth();

GtkTreeViewRowSeparatorFunc getRowSeparatorFunc();

int getRowSpanColumn();

string getTitle();

int getWrapWidth();

void popdown();

void popup();

void popupForDevice(Device device);

void setActive(int index);

bool setActiveId(string activeId);

void setActiveIter(TreeIter iter);

void setAddTearoffs(bool addTearoffs);

void setButtonSensitivity(GtkSensitivityType sensitivity);

void setColumnSpanColumn(int columnSpan);

void setEntryTextColumn(int textColumn);

void setFocusOnClick(bool focusOnClick);

void setIdColumn(int idColumn);

void setModel(TreeModelIF model);

void setPopupFixedWidth(bool fixed);

void setRowSeparatorFunc(GtkTreeViewRowSeparatorFunc func, void* data, GDestroyNotify destroy);

void setRowSpanColumn(int rowSpan);

void setTitle(string title);

void setWrapWidth(int width);

gulong addOnChanged(void delegate(ComboBox) dlg, ConnectFlags connectFlags);

gulong addOnFormatEntryText(string delegate(string, ComboBox) dlg, ConnectFlags connectFlags);

gulong addOnMoveActive(void delegate(GtkScrollType, ComboBox) dlg, ConnectFlags connectFlags);

gulong addOnPopdown(bool delegate(ComboBox) dlg, ConnectFlags connectFlags);

gulong addOnPopup(void delegate(ComboBox) dlg, ConnectFlags connectFlags);

}

Constructors

this this(GtkComboBox* gtkComboBox, bool ownedRef): Sets our main struct and passes it to the parent class.
this this(bool entry): Creates a new empty GtkComboBox.
this this(TreeModelIF model, bool entry): Creates a new GtkComboBox with the model initialized to model.
this this(CellArea area, bool entry): Creates a new empty GtkComboBox using area to layout cells.

Members

Functions

addOnChanged gulong addOnChanged(void delegate(ComboBox) dlg, ConnectFlags connectFlags): 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 ComboBox.setActiveIter. It will also be emitted while typing into the entry of a combo box with an entry.
addOnFormatEntryText gulong addOnFormatEntryText(string delegate(string, ComboBox) dlg, ConnectFlags connectFlags): For combo boxes that are created with an entry (See GtkComboBox:has-entry).
addOnMoveActive gulong addOnMoveActive(void delegate(GtkScrollType, ComboBox) dlg, ConnectFlags connectFlags): The ::move-active signal is a [keybinding signal]GtkBindingSignal which gets emitted to move the active selection.
addOnPopdown gulong addOnPopdown(bool delegate(ComboBox) dlg, ConnectFlags connectFlags): The ::popdown signal is a [keybinding signal]GtkBindingSignal which gets emitted to popdown the combo box list.
addOnPopup gulong addOnPopup(void delegate(ComboBox) dlg, ConnectFlags connectFlags): The ::popup signal is a [keybinding signal]GtkBindingSignal which gets emitted to popup the combo box list.
getActive int getActive(): 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 gtk.TreePath of the active item.
getActiveId string getActiveId(): 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 ComboBox.setIdColumn).
getActiveIter bool getActiveIter(TreeIter iter): Sets iter to point to the currently active item, if any item is active. Otherwise, iter is left unchanged.
getAddTearoffs bool getAddTearoffs(): Gets the current value of the :add-tearoffs property.
getButtonSensitivity GtkSensitivityType getButtonSensitivity(): Returns whether the combo box sets the dropdown button sensitive or not when there are no items in the model.
getColumnSpanColumn int getColumnSpanColumn(): Returns the column with column span information for combo_box.
getComboBoxStruct GtkComboBox* getComboBoxStruct(bool transferOwnership): Get the main Gtk struct
getEntryTextColumn int getEntryTextColumn(): Returns the column which combo_box is using to get the strings from to display in the internal entry.
getFocusOnClick bool getFocusOnClick(): Returns whether the combo box grabs focus when it is clicked with the mouse. See ComboBox.setFocusOnClick.
getHasEntry bool getHasEntry(): Returns whether the combo box has an entry.
getIdColumn int getIdColumn(): Returns the column which combo_box is using to get string IDs for values from.
getModel TreeModelIF getModel(): Returns the gtk.TreeModel which is acting as data source for combo_box.
getPopupAccessible ObjectAtk getPopupAccessible(): Gets the accessible object corresponding to the combo box’s popup.
getPopupFixedWidth bool getPopupFixedWidth(): Gets whether the popup uses a fixed width matching the allocated width of the combo box.
getRowSeparatorFunc GtkTreeViewRowSeparatorFunc getRowSeparatorFunc(): Returns the current row separator function.
getRowSpanColumn int getRowSpanColumn(): Returns the column with row span information for combo_box.
getStruct void* getStruct(): the main Gtk struct as a void*
getTitle string getTitle(): Gets the current title of the menu in tearoff mode. See ComboBox.setAddTearoffs.
getWrapWidth int getWrapWidth(): 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.
popdown void popdown(): Hides the menu or dropdown list of combo_box.
popup void popup(): Pops up the menu or dropdown list of combo_box.
popupForDevice void popupForDevice(Device 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 gdk.Devices able to send events to it.
setActive void setActive(int index): Sets the active item of combo_box to be the item at index.
setActiveId bool setActiveId(string activeId): 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.
setActiveIter void setActiveIter(TreeIter iter): Sets the current active item to be the one referenced by iter, or unsets the active item if iter is NULL.
setAddTearoffs void setAddTearoffs(bool addTearoffs): Sets whether the popup menu should have a tearoff menu item.
setButtonSensitivity void setButtonSensitivity(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).
setColumnSpanColumn void setColumnSpanColumn(int columnSpan): 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.
setEntryTextColumn void setEntryTextColumn(int textColumn): 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.
setFocusOnClick void setFocusOnClick(bool focusOnClick): 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.
setIdColumn void setIdColumn(int idColumn): 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.
setModel void setModel(TreeModelIF 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.
setPopupFixedWidth void setPopupFixedWidth(bool fixed): Specifies whether the popup’s width should be a fixed width matching the allocated width of the combo box.
setRowSeparatorFunc void setRowSeparatorFunc(GtkTreeViewRowSeparatorFunc func, void* 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.
setRowSpanColumn void setRowSpanColumn(int rowSpan): 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.
setTitle void setTitle(string title): Sets the menu’s title in tearoff mode.
setWrapWidth void setWrapWidth(int 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.

Static functions

getType GType getType()

Variables

gtkComboBox GtkComboBox* gtkComboBox;: the main Gtk struct

Inherited Members

From Bin

gtkBin GtkBin* gtkBin;: the main Gtk struct
getBinStruct GtkBin* getBinStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
getChild Widget getChild(): Gets the child of the gtk.Bin, or NULL if the bin contains no child widget. The returned widget does not have a reference added, so you do not need to unref it.

From CellEditableIF

getCellEditableStruct GtkCellEditable* getCellEditableStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
editingDone void editingDone(): Emits the editing-done signal.
removeWidget void removeWidget(): Emits the remove-widget signal.
startEditing void startEditing(Event event): Begins editing on a cell_editable.
addOnEditingDone gulong addOnEditingDone(void delegate(CellEditableIF) dlg, ConnectFlags connectFlags): This signal is a sign for the cell renderer to update its value from the cell_editable.
addOnRemoveWidget gulong addOnRemoveWidget(void delegate(CellEditableIF) dlg, ConnectFlags connectFlags): 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.

From CellLayoutIF

getCellLayoutStruct GtkCellLayout* getCellLayoutStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
addAttribute void addAttribute(CellRenderer cell, string attribute, int column): Adds an attribute mapping to the list in cell_layout.
clear void clear(): Unsets all the mappings on all renderers on cell_layout and removes all renderers from cell_layout.
clearAttributes void clearAttributes(CellRenderer cell): Clears all existing attributes previously set with gtk_cell_layout_set_attributes().
getArea CellArea getArea(): Returns the underlying gtk.CellArea which might be cell_layout if called on a gtk.CellArea or might be NULL if no gtk.CellArea is used by cell_layout.
getCells ListG getCells(): Returns the cell renderers which have been added to cell_layout.
packEnd void packEnd(CellRenderer cell, bool expand): 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.
packStart void packStart(CellRenderer cell, bool expand): 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.
reorder void reorder(CellRenderer cell, int position): Re-inserts cell at position.
setCellDataFunc void setCellDataFunc(CellRenderer cell, GtkCellLayoutDataFunc func, void* funcData, GDestroyNotify destroy): Sets the GtkCellLayoutDataFunc to use for cell_layout.

gtk ComboBox classes

ComboBox