#[repr(transparent)]
pub struct ComboBox { /* private fields */ }
Expand description

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 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.

To allow the user to enter values not in the model, the “has-entry” property allows the GtkComboBox to contain a Entry. This entry can be accessed by calling BinExt::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, ComboBoxText offers a simple alternative. Both GtkComboBox and ComboBoxText can contain an entry.

CSS nodes

⚠️ The following code is in plain ⚠️

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.

⚠️ The following code is in 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.

Implements

ComboBoxExt, BinExt, ContainerExt, WidgetExt, glib::ObjectExt, BuildableExt, CellEditableExt, CellLayoutExt, ComboBoxExtManual, ContainerExtManual, WidgetExtManual, BuildableExtManual

Implementations

Creates a new empty ComboBox.

Returns

A new ComboBox.

Creates a new empty ComboBox using area to layout cells.

area

the CellArea to use to layout cell renderers

Returns

A new ComboBox.

source

pub fn with_area_and_entry(area: &impl IsA<CellArea>) -> ComboBox

Creates a new empty ComboBox with an entry.

The new combo box will use area to layout cells.

area

the CellArea to use to layout cell renderers

Returns

A new ComboBox.

source

pub fn with_entry() -> ComboBox

Creates a new empty ComboBox with an entry.

Returns

A new ComboBox.

Creates a new ComboBox with the model initialized to model.

model

A TreeModel.

Returns

A new ComboBox.

source

pub fn with_model_and_entry(model: &impl IsA<TreeModel>) -> ComboBox

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

model

A TreeModel

Returns

A new ComboBox

Creates a new builder-pattern struct instance to construct ComboBox objects.

This method returns an instance of ComboBoxBuilder which can be used to create ComboBox objects.

Trait Implementations

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This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more
This method returns an ordering between self and other values if one exists. Read more
This method tests less than (for self and other) and is used by the < operator. Read more
This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
This method tests greater than (for self and other) and is used by the > operator. Read more
This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
Returns the type identifier of Self.

Auto Trait Implementations

Blanket Implementations

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