$CANEXH

   Deletes an exit control block from the list of control blocks for
   the calling access mode. Exit control blocks are declared by the
   Declare Exit Handler ($DCLEXH) service and are queued according
   to access mode in a last-in first-out order.

   Format

     SYS$CANEXH  [desblk]

   C Prototype

     int sys$canexh  (void *desblk);
 

Additional information available:

Argument