Sets the transformation for @widget.
This is a convenience function that retrieves the [class@Gtk.FixedLayoutChild] instance associated to @widget and calls [method@Gtk.FixedLayoutChild.set_transform].
a GtkWidget, child of @fixed
the transformation assigned to @widget or %NULL to reset @widget's transform
See Implementation
Sets the transformation for @widget.
This is a convenience function that retrieves the [class@Gtk.FixedLayoutChild] instance associated to @widget and calls [method@Gtk.FixedLayoutChild.set_transform].