Index: trunk/src/libcschem/event.c
===================================================================
--- trunk/src/libcschem/event.c	(revision 4215)
+++ trunk/src/libcschem/event.c	(revision 4216)
@@ -44,6 +44,7 @@
 	"cschev_prj_view_activated",
 	"cschev_library_changed",
 
+	"cschev_buffer_copy_custom",
 	"cschev_buffer_paste_custom"
 };
 
Index: trunk/src/libcschem/event.h
===================================================================
--- trunk/src/libcschem/event.h	(revision 4215)
+++ trunk/src/libcschem/event.h	(revision 4216)
@@ -46,6 +46,7 @@
 	CSCH_EVENT_LIBRARY_CHANGED,                  /* called after a new entry is added to the library so that any open library window can be updated on the GUI; no args (sheet can be retrieved from hidlib) */
 
 	/* generated by the app, not libcschem */
+	CSCH_EVENT_BUFFER_COPY_CUSTOM,               /* called before an object is duplicated from sheet to buffer; args: (csch_chdr_t **obj, csch_sheet_t *buffer); *obj is the current object, initially the source object on the sheet; destination buffer the second arg */
 	CSCH_EVENT_BUFFER_PASTE_CUSTOM,              /* called before an object is duplicated from buffer to sheet; args: (csch_chdr_t **obj); *obj is the current object, initially the source object in the buffer; destination sheet is in the hidlib arg */
 
 	CSCH_EVENT_last                              /* not a real event */