Index: trunk/src/layer_grp.c
===================================================================
--- trunk/src/layer_grp.c	(revision 33759)
+++ trunk/src/layer_grp.c	(revision 33760)
@@ -69,6 +69,11 @@
 	inhibit_notify--;
 }
 
+int pcb_layergrp_is_inhibited(void)
+{
+	return inhibit_notify > 0;
+}
+
 void pcb_layergrp_notify(pcb_board_t *pcb)
 {
 	NOTIFY(pcb);
Index: trunk/src/layer_grp.h
===================================================================
--- trunk/src/layer_grp.h	(revision 33759)
+++ trunk/src/layer_grp.h	(revision 33760)
@@ -160,6 +160,7 @@
 /* Enable/disable inhibition of layer changed events during layer group updates */
 void pcb_layergrp_inhibit_inc(void);
 void pcb_layergrp_inhibit_dec(void);
+int pcb_layergrp_is_inhibited(void);
 
 /* send out a layers changed notification, respecting the inhibit flag */
 void pcb_layergrp_notify_chg(pcb_board_t *pcb);