Trait RootExt

pub trait RootExt:
    IsA<Root>
    + Sealed
    + 'static {
    // Provided methods
    fn display(&self) -> Display { ... }
    fn focus(&self) -> Option<Widget> { ... }
    fn set_focus(&self, focus: Option<&impl IsA<Widget>>) { ... }
}

Trait containing all Root methods.

Implementors

AboutDialog, AppChooserDialog, ApplicationWindow, Assistant, ColorChooserDialog, Dialog, DragIcon, FileChooserDialog, FontChooserDialog, MessageDialog, PageSetupUnixDialog, PrintUnixDialog, Root, ShortcutsWindow, Window

Provided Methods

fn display(&self) -> Display

Returns the display that this Root is on.

Returns

the display of @root

fn focus(&self) -> Option<Widget>

Retrieves the current focused widget within the root.

Note that this is the widget that would have the focus if the root is active; if the root is not focused then gtk_widget_has_focus (widget) will be false for the widget.

Returns

the currently focused widget

fn set_focus(&self, focus: Option<&impl IsA<Widget>>)

If @focus is not the current focus widget, and is focusable, sets it as the focus widget for the root.

If @focus is None, unsets the focus widget for the root.

To set the focus to a particular widget in the root, it is usually more convenient to use WidgetExt::grab_focus() instead of this function.

focus

widget to be the new focus widget, or None to unset the focus widget

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<O: IsA<Root>> RootExt for O