Index: layersel/layersel.c
===================================================================
--- layersel/layersel.c	(revision 8543)
+++ layersel/layersel.c	(revision 8544)
@@ -107,6 +107,19 @@
 
 /*** Event handling ***/
 
+static gboolean group_vis_press_cb(GtkWidget *widget, GdkEvent *event, layersel_grp_t *lsg)
+{
+	switch(event->button.button) {
+		case 1:
+			printf("TODO: group vis change\n");
+			break;
+		case 3:
+			pcb_hid_actionl("Popup", "group", NULL);
+			break;
+	}
+	return TRUE;
+}
+
 static gboolean layer_vis_press_cb(GtkWidget *widget, GdkEvent *event, gpointer user_data)
 {
 	layersel_layer_t *lsl = user_data;
@@ -206,7 +219,7 @@
 	return lsl->box;
 }
 
-static GtkWidget *build_group_start(pcb_gtk_layersel_t *ls, layersel_grp_t *lsg, const char *gname)
+static GtkWidget *build_group_start(pcb_gtk_layersel_t *ls, layersel_grp_t *lsg, const char *gname, int has_group_vis)
 {
 	GtkWidget *gn_vert, *vlabel, *opn, *cld;
 
@@ -242,6 +255,11 @@
 	gtk_misc_set_alignment(GTK_MISC(vlabel), 0, 1);
 	gtk_widget_set_size_request(vlabel, 32, 1);
 
+	if (has_group_vis) {
+		GtkWidget *vis;
+		vis = wrap_bind_click(layer_vis_box(0, "#ff0000"), G_CALLBACK(group_vis_press_cb), lsg);
+		gtk_box_pack_start(GTK_BOX(lsg->grp_closed), vis, FALSE, FALSE, 0);
+	}
 	cld = wrap_bind_click(gtk_label_new(gname), G_CALLBACK(group_open_press_cb), lsg);
 	gtk_box_pack_start(GTK_BOX(lsg->grp_closed), cld, FALSE, FALSE, 0);
 
@@ -259,7 +277,7 @@
 static GtkWidget *build_group_real(pcb_gtk_layersel_t *ls, layersel_grp_t *lsg, const char *gname)
 {
 	int n;
-	GtkWidget *wg = build_group_start(ls, lsg, gname);
+	GtkWidget *wg = build_group_start(ls, lsg, gname, 1);
 
 	/* install layers */
 	for(n = 0; n < 4; n++) {
@@ -290,7 +308,7 @@
 
 	{ /* build hardwired virtual layers */
 		layersel_grp_t *lsg = &ls->grp[3];
-		gtk_box_pack_start(GTK_BOX(main_box), build_group_start(ls, lsg, "Virtual"), FALSE, FALSE, 0);
+		gtk_box_pack_start(GTK_BOX(main_box), build_group_start(ls, lsg, "Virtual", 0), FALSE, FALSE, 0);
 		gtk_box_pack_start(GTK_BOX(lsg->layers), build_layer(lsg, &lsg->layer[0], "Pins/Pads"), FALSE, FALSE, 1);
 		gtk_box_pack_start(GTK_BOX(lsg->layers), build_layer(lsg, &lsg->layer[1], "Vias"), FALSE, FALSE, 1);
 		gtk_box_pack_start(GTK_BOX(lsg->layers), build_layer(lsg, &lsg->layer[2], "Far side"), FALSE, FALSE, 1);