snapshotChild
Snapshot the a child of @widget.
When a widget receives a call to the snapshot function, it must send synthetic vfunc@Gtk.Widget.snapshot calls to all children. This function provides a convenient way of doing this. A widget, when it receives a call to its vfunc@Gtk.Widget.snapshot function, calls gtk_widget_snapshot_child() once for each child, passing in the @snapshot the widget received.
gtk_widget_snapshot_child() takes care of translating the origin of
Parameters
child
a child of @widget
snapshot
GtkSnapshot as passed to the widget. In particular, no calls to gtk_snapshot_translate() or other transform calls should have been made.