Arguments

 

display-id

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

   Specifies the virtual display from which text is read. The
   display-id argument is the address of an unsigned longword that
   contains the display identifier.

   The display identifier is returned by SMG$CREATE_VIRTUAL_DISPLAY.
 

resultant-string

   OpenVMS usage:char_string
   type:         character string
   access:       write only
   mechanism:    by descriptor

   String into which SMG$READ_FROM_DISPLAY writes the information
   read from the virtual display. The resultant-string argument is
   the address of a descriptor pointing to the string into which the
   string is written.
 

terminator-string

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor

   String containing a terminator or terminators that end the
   backward search, thus determining the starting position of
   the returned string. The terminator-string argument is the
   address of a descriptor pointing to the string of terminators.
   If terminator-string is omitted, no back searching is performed;
   the returned string starts with the character at the current
   cursor position.
 

start-row

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

   The start-row argument is the address of a signed longword that
   contains the row of the virtual display to read from. This is an
   optional argument.
 

rendition-string

   OpenVMS usage:char_string
   type:         character string
   access:       write only
   mechanism:    by descriptor

   Optional bit mask string that controls the video attributes.
   The rendition-string argument is the address of a descriptor
   pointing to the bit mask string. Each attribute set causes the
   corresponding attribute to be set for the corresponding byte in
   the text string in the display. The following attributes can be
   specified for each byte using the rendition-string argument:

   SMG$M_BLINK     Displays blinking characters.
   SMG$M_BOLD      Displays characters in higher-than-normal
                   intensity.
   SMG$M_REVERSE   Displays characters in reverse video; that is,
                   using the opposite of the default rendition of
                   the virtual display.
   SMG$M_          Displays underlined characters.
   UNDERLINE
   SMG$M_          Specifies invisible characters; that is, the
   INVISIBLE       characters exist in the virtual display but do
                   not appear on the pasteboard.