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-rw-r--r--spectro/inst.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/spectro/inst.h b/spectro/inst.h
index d47f7ea..736a879 100644
--- a/spectro/inst.h
+++ b/spectro/inst.h
@@ -643,6 +643,10 @@ typedef enum {
void (*eventcallback)(void *cntx, inst_event_type event); \
void *event_cntx; /* Event callback function */ \
\
+ /* Virtual delete. Cleans up things done by new_inst(). */ \
+ inst_code (*vdel)( \
+ struct _inst *p); \
+ \
/* Establish communications at the indicated baud rate. */ \
/* (Serial parameters are ignored for USB instrument) */ \
/* Timout in to seconds, and return non-zero error code */ \