Struct gtk4::ComboBox

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

Use DropDown instead A ComboBox is a widget that allows the user to choose from a list of valid choices.

An example GtkComboBox

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

The ComboBox 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 ComboBox 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 property::ComboBox::has-entry property allows the ComboBox to contain a Entry. This entry can be accessed by calling ComboBoxExt::child() on the combo box.

For a simple list of textual choices, the model-view API of ComboBox can be a bit overwhelming. In this case, ComboBoxText offers a simple alternative. Both ComboBox and 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.

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

A ComboBox 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

ComboBox uses the AccessibleRole::ComboBox role.

Implements

ComboBoxExt, WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, CellEditableExt, CellLayoutExt, ComboBoxExtManual, WidgetExtManual, AccessibleExtManual, CellLayoutExtManual

Implementations§

Creates a new empty ComboBox.

Deprecated since 4.10

Use DropDown

Returns

A new ComboBox

source

pub fn with_entry() -> ComboBox

Creates a new empty ComboBox with an entry.

In order to use a combo box with entry, you need to tell it which column of the model contains the text for the entry by calling ComboBoxExt::set_entry_text_column().

Deprecated since 4.10

Use DropDown

Returns

A new ComboBox

Creates a new ComboBox with a model.

Deprecated since 4.10

Use DropDown

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 a model.

See also with_entry().

Deprecated since 4.10

Use DropDown

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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