sample/examples/grid_packing.rb in gtk4-4.0.3 vs sample/examples/grid_packing.rb in gtk4-4.0.4

@@ -31,10 +31,10 @@
 
   # Here we construct the container that is going to pack our buttons.
   grid = Gtk::Grid.new
 
   # Pack the container in the window
-  win.add(grid)
+  win.set_child(grid)
 
   button = Gtk::Button.new(:label => "Button 1")
   button.signal_connect("clicked") { puts "Hello World!" }
 
   # Place the first button in the grid cell (0, 0), and make it fill