Arguments

 

display-id

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

   Display identifier of the virtual display associated with the
   newly created 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:       read only
   mechanism:    by reference

   Row number in the virtual display that will become row 1 in the
   viewport. The viewport-row-start argument is the address of a
   signed longword containing the row number.
 

viewport-column-start

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

   Column number in the virtual display that will become column 1 in
   the viewport. The viewport-column-start argument is the address
   of a signed longword containing the column number.
 

viewport-number-rows

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

   Number of rows in the viewport. The viewport-number-rows argument
   is the address of a signed longword containing the number of rows
   in the newly created viewport.
 

viewport-number-columns

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

   Number of columns in the viewport. The viewport-number-columns
   argument is the address of a signed longword containing the
   number of columns in the newly created viewport.