Arguments

 

display-id

   OpenVMS usage:identifier
   type:         longword (unsigned)
   access:       read only
   mechanism:    by reference

   Identifier of the virtual display associated with the viewport.
   The display-id argument is the address of an unsigned longword
   containing this identifier.
 

viewport-row-start

   OpenVMS usage:longword_signed
   type:         longword (signed)
   access:       write only
   mechanism:    by reference

   Optional argument that receives the starting row number of the
   viewport. The viewport-row-start argument is the address of a
   signed longword that receives this row number.
 

viewport-column-start

   OpenVMS usage:longword_signed
   type:         longword (signed)
   access:       write only
   mechanism:    by reference

   Optional argument that receives the starting column number of
   the specified viewport. The viewport-column-start argument is the
   address of a signed longword that receives this column number.
 

viewport-number-rows

   OpenVMS usage:longword_signed
   type:         longword (signed)
   access:       write only
   mechanism:    by reference

   Optional argument that receives the number of rows in the
   specified viewport. The viewport-number-rows argument is the
   address of a signed longword that receives this number.
 

viewport-number-columns

   OpenVMS usage:longword_signed
   type:         longword (signed)
   access:       write only
   mechanism:    by reference

   Optional argument that receives the number of columns in the
   specified viewport. The viewport-number-columns argument is the
   address of a signed longword that receives this number.