Index: work/gtk/layersel/layersel.c
===================================================================
--- work/gtk/layersel/layersel.c	(revision 8482)
+++ work/gtk/layersel/layersel.c	(revision 8483)
@@ -49,8 +49,19 @@
 	return ls->grp_row;
 }
 
+/** Main widget building function */
+GtkWidget *pcb_gtk_layersel_build(GtkWidget * mainwin)
+{
+	GtkWidget *box;
+	GtkWidget *label;
 
-GtkWidget *pcb_gtk_layersel_build(void)
-{
-	return NULL;
+	box = gtkc_hbox_new(FALSE, 0);
+	label = gtk_label_new("group1");
+	gtk_label_set_angle(GTK_LABEL(label), 90);
+	gtk_box_pack_start(GTK_BOX(box), label, FALSE, FALSE, 0);
+
+	gtk_container_add(GTK_CONTAINER(mainwin), box);
+	gtk_widget_show_all(mainwin);
+
+	return box;
 }
Index: work/gtk/layersel/layersel.h
===================================================================
--- work/gtk/layersel/layersel.h	(revision 8482)
+++ work/gtk/layersel/layersel.h	(revision 8483)
@@ -1,5 +1,4 @@
 #include <gtk/gtk.h>
 
 
-GtkWidget *pcb_gtk_layersel_build(void);
-
+GtkWidget *pcb_gtk_layersel_build(GtkWidget * mainwin);
Index: work/gtk/layersel/layersel_demo.c
===================================================================
--- work/gtk/layersel/layersel_demo.c	(revision 8482)
+++ work/gtk/layersel/layersel_demo.c	(revision 8483)
@@ -2,23 +2,25 @@
 
 #include "layersel.h"
 
-int main (int argc, char **argv)
+int main(int argc, char **argv)
 {
-  GtkWidget *mainwin;
+	GtkWidget *mainwin;
+	GtkWidget *box;
 
-  /* Initialize the widget set */
-  gtk_init (&argc, &argv);
-  /* Create the main window */
-  mainwin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-  gtk_window_set_default_size(GTK_WINDOW(mainwin), 400, 300);
-  g_signal_connect(G_OBJECT(mainwin), "destroy", G_CALLBACK(gtk_main_quit), NULL);
+	/* Initialize the widget set */
+	gtk_init(&argc, &argv);
+	/* Create the main window */
+	mainwin = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	gtk_window_set_default_size(GTK_WINDOW(mainwin), 400, 300);
+	g_signal_connect(G_OBJECT(mainwin), "destroy", G_CALLBACK(gtk_main_quit), NULL);
 
-  /* Set up GUI elements */
+	/* Set up GUI elements */
+	box = pcb_gtk_layersel_build(mainwin);
 
-  /* Show the application window */
-  gtk_widget_show_all (mainwin);
-  /* Enter the main event loop, and wait for user interaction */
-  gtk_main ();
+	/* Show the application window */
+	gtk_widget_show_all(mainwin);
+	/* Enter the main event loop, and wait for user interaction */
+	gtk_main();
 
-  return 0;
-}
\ No newline at end of file
+	return 0;
+}