GTK+ Reference Manual | ||||
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#include <gtk/gtk.h> GtkComboBox; GtkWidget* gtk_combo_box_new (void); GtkWidget* gtk_combo_box_new_with_model (GtkTreeModel *model); gint gtk_combo_box_get_wrap_width (GtkComboBox *combo_box); void gtk_combo_box_set_wrap_width (GtkComboBox *combo_box, gint width); gint gtk_combo_box_get_row_span_column (GtkComboBox *combo_box); void gtk_combo_box_set_row_span_column (GtkComboBox *combo_box, gint row_span); gint gtk_combo_box_get_column_span_column (GtkComboBox *combo_box); void gtk_combo_box_set_column_span_column (GtkComboBox *combo_box, gint column_span); gint gtk_combo_box_get_active (GtkComboBox *combo_box); void gtk_combo_box_set_active (GtkComboBox *combo_box, gint index_); gboolean gtk_combo_box_get_active_iter (GtkComboBox *combo_box, GtkTreeIter *iter); void gtk_combo_box_set_active_iter (GtkComboBox *combo_box, GtkTreeIter *iter); GtkTreeModel* gtk_combo_box_get_model (GtkComboBox *combo_box); void gtk_combo_box_set_model (GtkComboBox *combo_box, GtkTreeModel *model); GtkWidget* gtk_combo_box_new_text (void); void gtk_combo_box_append_text (GtkComboBox *combo_box, const gchar *text); void gtk_combo_box_insert_text (GtkComboBox *combo_box, gint position, const gchar *text); void gtk_combo_box_prepend_text (GtkComboBox *combo_box, const gchar *text); void gtk_combo_box_remove_text (GtkComboBox *combo_box, gint position); gchar* gtk_combo_box_get_active_text (GtkComboBox *combo_box); void gtk_combo_box_popup (GtkComboBox *combo_box); void gtk_combo_box_popdown (GtkComboBox *combo_box); AtkObject* gtk_combo_box_get_popup_accessible (GtkComboBox *combo_box); GtkTreeViewRowSeparatorFunc gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box); void gtk_combo_box_set_row_separator_func (GtkComboBox *combo_box, GtkTreeViewRowSeparatorFunc func, gpointer data, GtkDestroyNotify destroy); void gtk_combo_box_set_add_tearoffs (GtkComboBox *combo_box, gboolean add_tearoffs); gboolean gtk_combo_box_get_add_tearoffs (GtkComboBox *combo_box); void gtk_combo_box_set_title (GtkComboBox *combo_box, const gchar *title); const gchar* gtk_combo_box_get_title (GtkComboBox *combo_box); void gtk_combo_box_set_focus_on_click (GtkComboBox *combo, gboolean focus_on_click); gboolean gtk_combo_box_get_focus_on_click (GtkComboBox *combo);
GObject +----GInitiallyUnowned +----GtkObject +----GtkWidget +----GtkContainer +----GtkBin +----GtkComboBox +----GtkComboBoxEntry
GtkComboBox implements AtkImplementorIface, GtkCellEditable and GtkCellLayout.
"active" gint : Read / Write "add-tearoffs" gboolean : Read / Write "column-span-column" gint : Read / Write "focus-on-click" gboolean : Read / Write "has-frame" gboolean : Read / Write "model" GtkTreeModel : Read / Write "popup-shown" gboolean : Read "row-span-column" gint : Read / Write "tearoff-title" gchararray : Read / Write "wrap-width" gint : Read / Write
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 GtkOptionMenu, or similar to a Windows-style combo box.
Unlike its predecessors GtkCombo and GtkOptionMenu, 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.
In addition to the model-view API, GtkComboBox 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 functions gtk_combo_box_new_text()
,
gtk_combo_box_append_text()
, gtk_combo_box_insert_text()
,
gtk_combo_box_prepend_text()
, gtk_combo_box_remove_text()
and
gtk_combo_box_get_active_text()
.
GtkWidget* gtk_combo_box_new (void);
Creates a new empty GtkComboBox.
Returns : | A new GtkComboBox. |
Since 2.4
GtkWidget* gtk_combo_box_new_with_model (GtkTreeModel *model);
Creates a new GtkComboBox with the model initialized to model
.
model : |
A GtkTreeModel. |
Returns : | A new GtkComboBox. |
Since 2.4
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.
combo_box : |
A GtkComboBox. |
Returns : | the wrap width. |
Since 2.6
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.
combo_box : |
A GtkComboBox. |
width : |
Preferred number of columns. |
Since 2.4
gint gtk_combo_box_get_row_span_column (GtkComboBox *combo_box);
Returns the column with row span information for combo_box
.
combo_box : |
A GtkComboBox. |
Returns : | the row span column. |
Since 2.6
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.
combo_box : |
A GtkComboBox. |
row_span : |
A column in the model passed during construction. |
Since 2.4
gint gtk_combo_box_get_column_span_column (GtkComboBox *combo_box);
Returns the column with column span information for combo_box
.
combo_box : |
A GtkComboBox. |
Returns : | the column span column. |
Since 2.6
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.
combo_box : |
A GtkComboBox. |
column_span : |
A column in the model passed during construction. |
Since 2.4
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.
combo_box : |
A GtkComboBox. |
Returns : | An integer which is the index of the currently active item, or -1 if there's no active item. |
Since 2.4
void gtk_combo_box_set_active (GtkComboBox *combo_box, gint index_);
Sets the active item of combo_box
to be the item at index
.
combo_box : |
A GtkComboBox. |
index_ : |
An index in the model passed during construction, or -1 to have no active item. |
Since 2.4
gboolean gtk_combo_box_get_active_iter (GtkComboBox *combo_box, GtkTreeIter *iter);
Sets iter
to point to the current active item, if it exists.
combo_box : |
A GtkComboBox |
iter : |
The uninitialized GtkTreeIter. |
Returns : | TRUE , if iter was set
|
Since 2.4
void gtk_combo_box_set_active_iter (GtkComboBox *combo_box, GtkTreeIter *iter);
Sets the current active item to be the one referenced by iter
.
iter
must correspond to a path of depth one.
combo_box : |
A GtkComboBox |
iter : |
The GtkTreeIter. |
Since 2.4
GtkTreeModel* gtk_combo_box_get_model (GtkComboBox *combo_box);
Returns the GtkTreeModel which is acting as data source for combo_box
.
combo_box : |
A GtkComboBox. |
Returns : | A GtkTreeModel which was passed during construction. |
Since 2.4
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_combo_box_cell_layout_clear()
yourself if you need to set up
different cell renderers for the new model.
combo_box : |
A GtkComboBox. |
model : |
A GtkTreeModel. |
Since 2.4
GtkWidget* gtk_combo_box_new_text (void);
Convenience function which constructs a new text combo box, which is a
GtkComboBox just displaying strings. If you use this function to create
a text combo box, you should only manipulate its data source with the
following convenience functions: gtk_combo_box_append_text()
,
gtk_combo_box_insert_text()
, gtk_combo_box_prepend_text()
and
gtk_combo_box_remove_text()
.
Returns : | A new text combo box. |
Since 2.4
void gtk_combo_box_append_text (GtkComboBox *combo_box, const gchar *text);
Appends string
to the list of strings stored in combo_box
. Note that
you can only use this function with combo boxes constructed with
gtk_combo_box_new_text()
.
combo_box : |
A GtkComboBox constructed using gtk_combo_box_new_text() .
|
text : |
A string. |
Since 2.4
void gtk_combo_box_insert_text (GtkComboBox *combo_box, gint position, const gchar *text);
Inserts string
at position
in the list of strings stored in combo_box
.
Note that you can only use this function with combo boxes constructed
with gtk_combo_box_new_text()
.
combo_box : |
A GtkComboBox constructed using gtk_combo_box_new_text() .
|
position : |
An index to insert text .
|
text : |
A string. |
Since 2.4
void gtk_combo_box_prepend_text (GtkComboBox *combo_box, const gchar *text);
Prepends string
to the list of strings stored in combo_box
. Note that
you can only use this function with combo boxes constructed with
gtk_combo_box_new_text()
.
combo_box : |
A GtkComboBox constructed with gtk_combo_box_new_text() .
|
text : |
A string. |
Since 2.4
void gtk_combo_box_remove_text (GtkComboBox *combo_box, gint position);
Removes the string at position
from combo_box
. Note that you can only use
this function with combo boxes constructed with gtk_combo_box_new_text()
.
combo_box : |
A GtkComboBox constructed with gtk_combo_box_new_text() .
|
position : |
Index of the item to remove. |
Since 2.4
gchar* gtk_combo_box_get_active_text (GtkComboBox *combo_box);
Returns the currently active string in combo_box
or NULL
if none
is selected. Note that you can only use this function with combo
boxes constructed with gtk_combo_box_new_text()
and with
GtkComboBoxEntrys.
combo_box : |
A GtkComboBox constructed with gtk_combo_box_new_text() .
|
Returns : | a newly allocated string containing the currently active text. |
Since 2.6
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.
combo_box : |
a GtkComboBox |
Since 2.4
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.
combo_box : |
a GtkComboBox |
Since 2.4
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.
combo_box : |
a GtkComboBox |
Returns : | the accessible object corresponding to the combo box's popup. |
Since 2.6
GtkTreeViewRowSeparatorFunc gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box);
Returns the current row separator function.
combo_box : |
a GtkComboBox |
Returns : | the current row separator function. |
Since 2.6
void gtk_combo_box_set_row_separator_func (GtkComboBox *combo_box, GtkTreeViewRowSeparatorFunc func, gpointer data, GtkDestroyNotify 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.
combo_box : |
a GtkComboBox |
func : |
a GtkTreeViewRowSeparatorFunc |
data : |
user data to pass to func , or NULL
|
destroy : |
destroy notifier for data , or NULL
|
Since 2.6
void gtk_combo_box_set_add_tearoffs (GtkComboBox *combo_box, gboolean add_tearoffs);
Sets whether the popup menu should have a tearoff menu item.
combo_box : |
a GtkComboBox |
add_tearoffs : |
TRUE to add tearoff menu items
|
Since 2.6
gboolean gtk_combo_box_get_add_tearoffs (GtkComboBox *combo_box);
Gets the current value of the :add-tearoffs property.
combo_box : |
a GtkComboBox |
Returns : | the current value of the :add-tearoffs property. |
void gtk_combo_box_set_title (GtkComboBox *combo_box, const gchar *title);
Sets the menu's title in tearoff mode.
combo_box : |
a GtkComboBox |
title : |
a title for the menu in tearoff mode. |
Since 2.10
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()
.
combo_box : |
a GtkComboBox |
Returns : | the menu's title in tearoff mode. This is an internal copy of the string which must not be freed. |
Since 2.10
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.
combo : |
a GtkComboBox |
focus_on_click : |
whether the combo box grabs focus when clicked with the mouse |
Since 2.6
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()
.
combo : |
a GtkComboBox |
Returns : | TRUE if the combo box grabs focus when it is
clicked with the mouse.
|
Since 2.6
active
" property"active" gint : Read / Write
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.
Allowed values: >= -1
Default value: -1
Since 2.4
add-tearoffs
" property"add-tearoffs" gboolean : Read / Write
The add-tearoffs property controls whether generated menus have tearoff menu items.
Note that this only affects menu style combo boxes.
Default value: FALSE
Since 2.6
column-span-column
" property"column-span-column" gint : Read / Write
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 values of that column are used to determine how many columns a value in the list will span.
Allowed values: >= -1
Default value: -1
Since 2.4
focus-on-click
" property"focus-on-click" gboolean : Read / Write
Whether the combo box grabs focus when it is clicked with the mouse.
Default value: TRUE
has-frame
" property"has-frame" gboolean : Read / Write
The has-frame property controls whether a frame is drawn around the entry.
Default value: TRUE
Since 2.6
model
" property"model" GtkTreeModel : Read / Write
The model from which the combo box takes the values shown in the list.
Since 2.4
popup-shown
" property"popup-shown" gboolean : Read
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.
Default value: FALSE
Since 2.10
row-span-column
" property"row-span-column" gint : Read / Write
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 values of that column are used to determine how many rows a value in the list will span. Therefore, the values in the model column pointed to by this property must be greater than zero and not larger than wrap-width.
Allowed values: >= -1
Default value: -1
Since 2.4
tearoff-title
" property"tearoff-title" gchararray : Read / Write
A title that may be displayed by the window manager when the popup is torn-off.
Default value: ""
Since 2.10
void user_function (GtkComboBox *widget, gpointer user_data) : Run Last
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 a GtkComboBoxEntry,
as well as when selecting an item from the GtkComboBoxEntry's list.
widget : |
the object which received the signal |
user_data : |
user data set when the signal handler was connected. |
Since 2.4