Copyright Digital Equipment Corp. All rights reserved.
Arguments
display-id
OpenVMS usage:identifier
type: longword (unsigned)
access: read only
mechanism: by reference
Identifier of the virtual display. The display-id argument is the
address of an unsigned longword containing this identifier.
flags
OpenVMS usage:mask_longword
type: longword (unsigned)
access: read only
mechanism: by reference
Optional bit mask indicating the character to be drawn. The flags
argument is the address of an unsigned longword that contains the
flag. The flags argument accepts the following character values:
o SMG$M_UP
o SMG$M_DOWN
o SMG$M_LEFT
o SMG$M_RIGHT
Note that you may perform a logical OR operation to draw T
characters, corner characters, cross characters, and so forth.
A value of 0 draws a diamond character.
row
OpenVMS usage:longword_signed
type: longword (signed)
access: read only
mechanism: by reference
Optional row number specifying the row position at which the
specified character is drawn. The row argument is the address of
a signed longword containing the row number. If row is omitted,
the character is drawn at the row position of the current virtual
cursor.
column
OpenVMS usage:longword_signed
type: longword (signed)
access: read only
mechanism: by reference
Optional column number specifying the column position at which
the specified character is drawn. The column argument is the
address of a signed longword containing the column number. If
column is omitted, the character is drawn at the column position
of the current virtual cursor.
rendition-set
OpenVMS usage:mask_longword
type: longword (unsigned)
access: read only
mechanism: by reference
Attribute specifier. The optional rendition-set argument is
the address of a longword bit mask in which each attribute set
causes the corresponding attribute to be set in the display. The
following attributes can be specified using the rendition-set
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$M_ Specifies invisible characters; that is, the
INVISIBLE characters exist in the virtual display but do
not appear on the pasteboard.
SMG$M_USER1 Displays user-defined attributes.
through
SMG$M_USER8
The display-id argument must be specified when you use the
rendition-set argument.
rendition-complement
OpenVMS usage:mask_longword
type: longword (unsigned)
access: read only
mechanism: by reference
Attribute complement specifier. The optional rendition-
complement argument is the address of a longword bit mask in
which each attribute set causes the corresponding attribute to
be complemented in the display. All of the attributes that can
be specified with the rendition-set argument can be complemented
with the rendition-complement argument. The display-id argument
must be specified when you use the rendition-complement argument.
The optional arguments rendition-set and rendition-complement
let the user control the attributes of the virtual display. The
rendition-set argument sets certain virtual display attributes,
while rendition-complement complements these attributes. If the
same bit is specified in both the rendition-set and rendition-
complement parameters, rendition-set is evaluated first, followed
by rendition-complement. By using these two parameters together,
the user can control each virtual display attribute in a single
procedure call. On a single-attribute basis, the user can cause
the following transformations:
Set Complement Action
0 0 Attribute set to default
1 0 Attribute on
0 1 Attribute set to complement of default setting
1 1 Attribute off