Sets @widget as the widget that @entry will capture key
events from.
Key events are consumed by the search entry to start or
continue a search.
If the entry is part of a GtkSearchBar, it is preferable
to call [method@Gtk.SearchBar.set_key_capture_widget] instead,
which will reveal the entry in addition to triggering the
search entry.
Note that despite the name of this function, the events
are only 'captured' in the bubble phase, which means that
editable child widgets of @widget will receive text input
before it gets captured. If that is not desired, you can
capture and forward the events yourself with
[method@Gtk.EventControllerKey.forward].
Sets @widget as the widget that @entry will capture key events from.
Key events are consumed by the search entry to start or continue a search.
If the entry is part of a GtkSearchBar, it is preferable to call [method@Gtk.SearchBar.set_key_capture_widget] instead, which will reveal the entry in addition to triggering the search entry.
Note that despite the name of this function, the events are only 'captured' in the bubble phase, which means that editable child widgets of @widget will receive text input before it gets captured. If that is not desired, you can capture and forward the events yourself with [method@Gtk.EventControllerKey.forward].