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Updated:
11 December 1998
|
OpenVMS RTL Screen Management (SMG$) Manual
The display-id argument must be specified when you use
the rendition-set argument.
rendition-complement
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Attribute complement specifier. The optional
rendition-complement argument is the address of a
longword bit mask in which each attribute set causes the corresponding
attribute to be complemented in the display. All attributes that can be
specified with the rendition-set argument can be
complemented with the rendition-complement argument.
The display-id argument must be specified when you use
the rendition-complement argument.
The optional arguments rendition-set and
rendition-complement let the user control the
attributes of the virtual display. The rendition-set
argument sets certain virtual display attributes, while
rendition-complement complements these attributes. If
the same bit is specified in both the rendition-set
and rendition-complement parameters,
rendition-set is evaluated first, followed by
rendition-complement. By using these two parameters
together, the user can control each virtual display attribute in a
single procedure call. On a single-attribute basis, the user can cause
the following transformations:
| Set |
Complement |
Action |
|
0
|
0
|
Attribute set to default
|
|
1
|
0
|
Attribute on
|
|
0
|
1
|
Attribute set to complement of default setting
|
|
1
|
1
|
Attribute off
|
character-set
| OpenVMS usage: |
longword_unsigned |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the default character set for all text in this virtual
display. The character-set argument is the address of
an unsigned longword that contains the character set code. Valid values
are SMG$C_ASCII (the default) and SMG$C_SPEC_GRAPHICS.
Description
SMG$PUT_CHARS writes text to the specified virtual display, possibly
overwriting any existing text. Use SMG$INSERT_CHARS to write new text
while preserving existing text.
By default, SMG$PUT_CHARS modifies only those character positions where
new text is written. However, you can erase the line before the new
text is written by specifying SMG$M_ERASE_LINE for the
flags argument, or you can erase the remainder of the
line after the text is written by specifying SMG$M_ERASE_TO_EOL for the
flags argument. The cursor remains at the character
position immediately following the last text written. Note that this
routine writes to a single line; excess characters at the end of the
line are discarded. However, if the display has the SMG$M_TRUNC_ICON
attribute, SMG$PUT_CHARS outputs the truncation icon when the line
overflows the display.
Condition Values Returned
|
SS$_NORMAL
|
Normal successful completion.
|
|
SMG$_INVCOL
|
Invalid column.
|
|
SMG$_INVDIS_ID
|
Invalid
display-id.
|
|
SMG$_INVROW
|
Invalid row.
|
|
SMG$_WILUSERMS
|
Pasteboard is not a video terminal.
|
|
SMG$_WRONUMARG
|
Wrong number of arguments.
|
|
LIB$_INVSTRDES
|
Invalid string descriptor.
|
Example
|
C+
C This Fortran example program demonstrates the use of
C SMG$PUT_CHARS.
C-
INTEGER SMG$CREATE_VIRTUAL_DISPLAY, SMG$CREATE_PASTEBOARD
INTEGER SMG$PASTE_VIRTUAL_DISPLAY, SMG$PUT_CHARS
INTEGER DISPLAY1, PASTE1, ROWS, COLUMNS, BORDER, STATUS
C+
C Create the virtual display. To give it a border, set BORDER = 1.
C No border would be BORDER = 0.
C-
ROWS = 7
COLUMNS = 50
BORDER = 1
STATUS = SMG$CREATE_VIRTUAL_DISPLAY
1 (ROWS, COLUMNS, DISPLAY1, BORDER)
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
C+
C Create the pasteboard.
C-
STATUS = SMG$CREATE_PASTEBOARD (PASTE1)
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
C+
C Put data in the virtual display.
C-
STATUS = SMG$PUT_CHARS ( DISPLAY1,
1 ' This virtual display has 7 rows and 50 columns.', 2, 1 )
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
STATUS = SMG$PUT_CHARS ( DISPLAY1,
1 ' This is a bordered virtual display.', 4, 1 )
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
STATUS = SMG$PUT_CHARS ( DISPLAY1,
1 ' SMG$PUT_CHARS puts data in this virtual display.', 6, 1 )
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
C+
C Paste the virtual display.
C-
STATUS = SMG$PASTE_VIRTUAL_DISPLAY ( DISPLAY1, PASTE1, 4, 15 )
IF (.NOT. STATUS) CALL LIB$SIGNAL(%VAL(STATUS))
END
|
The output generated by this Fortran program is shown in Figure SMG-33.
Figure SMG-33 Output of Fortran Program Calling
SMG$PUT_CHARS
SMG$PUT_CHARS_HIGHWIDE
The Write Double-Height Double-Width Characters routine writes
double-height, double-width (highwide) characters to a virtual display.
Format
SMG$PUT_CHARS_HIGHWIDE display-id ,text [,start-row]
[,start-column] [,rendition-set] [,rendition-complement]
[,character-set]
RETURNS
| OpenVMS usage: |
cond_value |
| type: |
longword (unsigned) |
| access: |
write only |
| mechanism: |
by value |
Arguments
display-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the virtual display affected. The display-id
argument is the address of an unsigned longword that contains the
display identifier.
The display identifier is returned by SMG$CREATE_VIRTUAL_DISPLAY.
text
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
Characters to be written to the virtual display. The
text argument is the address of a descriptor pointing
to the text.
start-row
| OpenVMS usage: |
longword_signed |
| type: |
longword (signed) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the line at which output begins. The
start-row argument is the address of a signed longword
that contains the line number. If start-row is omitted
or if it is equal to zero, output begins on the current line.
start-column
| OpenVMS usage: |
longword_signed |
| type: |
longword (signed) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the column at which output begins. The
start-column argument is the address of a signed
longword that contains the column number. If
start-column is omitted or if it is equal to zero,
output begins on the current column.
rendition-set
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Attribute specifier. The optional rendition-set
argument is the address of a longword bit mask in which each attribute
set causes the corresponding attribute to be set in the display. The
following attributes can be specified using the
rendition-set argument:
|
SMG$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$M_UNDERLINE
|
Displays underlined characters.
|
|
SMG$M_INVISIBLE
|
Specifies invisible characters; that is, the characters exist in the
virtual display but do not appear on the pasteboard.
|
SMG$M_USER1 through
SMG$M_USER8
|
Displays user-defined attributes.
|
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 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
|
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 code. Valid values
are SMG$C_ASCII (the default) and SMG$C_SPEC_GRAPHICS.
Description
SMG$PUT_CHARS_HIGHWIDE writes double-height, double-width characters to
the specified virtual display. The corresponding pasteboard line cannot
contain a mixture of single-height/width and double-height/width
characters; if the line contains any single-height/width characters,
those characters will be replaced with blanks. If the text does not
span the line, it is padded with blanks. The virtual cursor remains at
the character position immediately following the last text written.
Note that if the terminal does not support double-height characters,
the same characters will be displayed on two successive lines.
If the display has the SMG$M_TRUNC_ICON attribute,
SMG$PUT_CHAR_HIGHWIDE outputs the truncation icon when the line
overflows the display.
Condition Values Returned
|
SS$_NORMAL
|
Normal successful completion.
|
|
SMG$_INVCOL
|
Invalid column.
|
|
SMG$_INVDIS_ID
|
Invalid
display-id.
|
|
SMG$_INVROW
|
Invalid row.
|
|
SMG$_WILUSERMS
|
Pasteboard is not a video terminal.
|
|
SMG$_WRONUMARG
|
Wrong number of arguments.
|
|
LIB$_INVSTRDES
|
Invalid string descriptor.
|
SMG$PUT_CHARS_MULTI
The Put Text with Multiple Renditions to Display routine writes text
with multiple renditions to the virtual display.
Format
SMG$PUT_CHARS_MULTI display-id ,text [,start-row] [,start-column]
[,flags] [,rendition-string] [,rendition-complement] [,character-set]
RETURNS
| OpenVMS usage: |
cond_value |
| type: |
longword (unsigned) |
| access: |
write only |
| mechanism: |
by value |
Arguments
display-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Identifier of the virtual display to be affected. The
display-id argument is the address of an unsigned
longword that contains this identifier.
text
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
Text to be output. The text argument is the address of
a descriptor pointing to the output string.
start-row
| OpenVMS usage: |
longword_signed |
| type: |
longword (signed) |
| access: |
read only |
| mechanism: |
by reference |
Optional row number at which to start output. The
start-row argument is the address of a signed longword
containing this number. If omitted, the current row number is used.
start-column
| OpenVMS usage: |
longword_signed |
| type: |
longword (signed) |
| access: |
read only |
| mechanism: |
by reference |
Optional column number at which to start output. The
start-column argument is the address of a signed
longword containing this number. If omitted, the current column number
is used.
flags
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Optional bit mask that specifies the action to take before the
specified text is output. The flags argument is the
address of an unsigned longword that contains the flag. The
flags argument accepts the following values:
|
0
|
Does not erase line (the default).
|
|
SMG$M_ERASE_TO_EOL
|
Erases the remaining part of the line.
|
|
SMG$M_ERASE_LINE
|
Erases the entire line.
|
rendition-string
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read 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_UNDERLINE
|
Displays underlined characters.
|
|
SMG$M_INVISIBLE
|
Specifies invisible characters; that is, the characters exist in the
virtual display but do not appear on the pasteboard.
|
rendition-complement
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
Optional bit mask string that controls the video attributes. The
rendition-complement is the address of a descriptor
pointing to the bit mask string. Each attribute set causes the
corresponding attribute to be complemented for the corresponding byte
in the text string in the display.
If the same bit in the same byte is specified in both the
rendition-string and
rendition-complement arguments,
rendition-string is evaluated first, followed by
rendition-complement. By using these two parameters
together, you can independently control each attribute in a single
routine call. On a single-attribute basis, you can cause the following
transformations:
| Set |
Complement |
Action |
|
0
|
0
|
Attribute set to default
|
|
1
|
0
|
Attribute on
|
|
0
|
1
|
Attribute set to complement of default setting
|
|
1
|
1
|
Attribute off
|
character-set
| OpenVMS usage: |
longword_unsigned |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the default character set for all text in this virtual
display. The character-set argument is the address of
an unsigned longword that contains the character set code. Valid values
are SMG$C_ASCII (the default) and SMG$C_SPEC_GRAPHICS.
Description
SMG$PUT_CHARS_MULTI lets you write text with multiple renditions to the
virtual display. No additional cursor movement sequences are added.
SMG$PUT_CHARS_MULTI overwrites any existing text in the positions you
specify. Use SMG$INSERT_CHARS to write new text while preserving
existing text.
By default, SMG$PUT_CHARS_MULTI modifies only those character positions
where new text is written. However, you can erase the line before the
new text is written by specifying SMG$M_ERASE_LINE for the
flags argument, or you can erase the remainder of the
line after the text is written by specifying SMG$M_ERASE_TO_EOL for the
flags argument. The cursor remains at the character
position immediately following the last text written. Note that this
routine writes to a single line; excess characters at the end of the
line are discarded. However, if the display has the SMG$M_TRUNC_ICON
attribute, SMG$PUT_CHARS_MULTI outputs the truncation icon when the
line overflows the display.
Condition Values Returned
|
SS$_NORMAL
|
Normal successful completion.
|
|
SMG$_INVCOL
|
Invalid column specification.
|
|
SMG$_INVROW
|
Invalid row specification.
|
|
SMG$_WILUSERMS
|
Pasteboard is not a video terminal.
|
|
SMG$_WRONUMARG
|
Wrong number (or combination of) arguments.
|
|
LIB$_INVSTRDES
|
Invalid string descriptor.
|
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