examples/lib use the new wrappers

examples/gtk/ex2.nim

@@ -2,20 +2,21 @@
 import 
   glib2, gtk2
 
-proc destroy(widget: pGtkWidget, data: pgpointer){.cdecl.} = 
-  gtk_main_quit()
+proc destroy(widget: pWidget, data: pgpointer){.cdecl.} = 
+  main_quit()
 
 var 
-  window: PGtkWidget
-  button: PGtkWidget
+  window: PWidget
+  button: PWidget
+
+nimrod_init()
+window = window_new(WINDOW_TOPLEVEL)
+button = button_new_with_label("Click me")
+set_border_width(PContainer(Window), 5)
+add(PContainer(window), button)
+discard signal_connect(window, "destroy", 
+                           SIGNAL_FUNC(ex2.destroy), nil)
+show(button)
+show(window)
+main()
 
-gtk_nimrod_init()
-window = gtk_window_new(GTK_WINDOW_TOPLEVEL)
-button = gtk_button_new_with_label("Click me")
-gtk_container_set_border_width(GTK_CONTAINER(Window), 5)
-gtk_container_add(GTK_Container(window), button)
-discard gtk_signal_connect(GTKOBJECT(window), "destroy", 
-                           GTK_SIGNAL_FUNC(destroy), nil)
-gtk_widget_show(button)
-gtk_widget_show(window)
-gtk_main()