Arguments

 

addres

   OpenVMS usage:address
   type:         longword (unsigned)
   access:       read only
   mechanism:    by reference
   Routine to receive control when a change mode trap or a
   compatibility mode fault occurs. The addres argument is the
   exception handling code in the address space of the calling
   process.

   If you specify the addres argument as 0, $DCLCMH clears the
   previously declared handler.
 

prvhnd

   OpenVMS usage:address
   type:         longword (unsigned)
   access:       write only
   mechanism:    by reference
   Address of a previously declared handler. The prvhnd argument
   is the address of a longword containing the address of the
   previously declared handler.
 

type

   OpenVMS usage:longword_unsigned
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   Handler type indicator. The type argument is a longword value.
   The value 0 (the default) indicates that a change mode handler
   is to be declared for the access mode at which the request is
   issued; the value 1 specifies that a compatibility mode handler
   is to be declared.