Arguments

 

display-id

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

   Specifies the virtual display whose attributes are to be changed.
   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.
 

number-of-rows

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

   Specifies the new number of rows for the virtual display. The
   number-of-rows argument is the address of a signed longword that
   contains the number of rows in the virtual display.
 

number-of-columns

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

   Specifies the new number of columns for the virtual display. The
   number-of-columns argument is the address of a signed longword
   that contains the number of columns in the virtual display.
 

display-attributes

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

   Specifies the attributes of the virtual display. The display-
   attributes argument is the address of a longword bit mask that
   contains the display attributes.

   Valid values for display-attributes are as follows:

   SMG$M_BORDER       Specifies a bordered display. If omitted, the
                      display is not bordered.
   SMG$M_BLOCK_       Specifies a block bordered display. If
   BORDER             omitted, the display is not bordered.
   SMG$M_DISPLAY_     Specifies that control characters such as
   CONTROLS           carriage return and line feed are displayed as
                      graphic characters, if your terminal supports
                      them.
   SMG$M_TRUNC_ICON   Specifies that an icon (generally a diamond
                      shape) is displayed where truncation of a line
                      exceeding the width of the virtual display has
                      occurred.
 

video-attributes

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

   Specifies the default rendition to be applied to all output in
   a virtual display, unless overridden by a call to a specific
   output routine. The video-attributes argument is the address of
   an unsigned longword that contains the video attributes mask.

   For example, a call to SMG$PUT_CHARS with an explicit rendition
   specified would override the default rendition.

   The bits that can be set for this argument are as follows:

   SMG$M_BLINK        Displays blinking characters.
   SMG$M_BOLD         Displays characters in higher-than-normal
                      intensity.
   SMG$M_REVERSE      Displays characters in reverse video; that
                      is, to the opposite of the current default
                      rendition of the virtual display.
   SMG$M_UNDERLINE    Displays underlined characters.
   SMG$M_INVISIBLE    Specifies invisible characters; that is, the
                      characters exist in the virtual display but do
                      not appear on the pasteboard.
   SMG$M_USER1        Displays user-defined attributes.
   through
   SMG$M_USER8

   You can specify any combination of attributes in a single call.
   All other bits are reserved for use by VSI and must be 0.
 

character-set

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

   Specifies the default character set for all text in this virtual
   display. The character-set argument is the address of an unsigned
   longword that contains the character set specifier. Valid values
   are SMG$C_ASCII (the default), and SMG$C_SPEC_GRAPHICS.