Move -[show] and -[hide] from OGWidget to OGWindow.

gtk/OGWidget.m

@@ -44,14 +44,4 @@ void og_destroy(GtkWidget *widget, OGWidget *object)
 
 	return self;
 }
-
-- (void)show
-{
-	gtk_widget_show_all(widget);
-}
-
-- (void)hide
-{
-	gtk_widget_hide(widget);
-}
 @end

gtk/OGWindow.m

@@ -100,6 +100,16 @@ willClose(GtkWidget *widget, GdkEvent *event, gpointer data)
 	gtk_container_add(GTK_CONTAINER(widget), child->widget);
 }
 
+- (void)show
+{
+	gtk_widget_show_all(widget);
+}
+
+- (void)hide
+{
+	gtk_widget_hide(widget);
+}
+
 - (BOOL)OG_willClose
 {
 	OFAutoreleasePool *pool = [OFAutoreleasePool new];