add_child

Description:

public bool add_child (Widget child, string id)

Adds a custom widget to a generated menubar.

For this to work, the menu model of this must have an item with a `custom` attribute that matches id .

Parameters:

this

a `GtkPopoverMenuBar`
child

the `GtkWidget` to add
id

the ID to insert child at

Returns:

true if id was found and the widget added