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Document revision date: 19 July 1999
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OpenVMS RTL Screen Management (SMG$) Manual
SMG$PUT_CHARS_WIDE
The Write Double-Width Characters routine writes double-width
characters to a virtual display.
Format
SMG$PUT_CHARS_WIDE display-id ,text [,start-row] [,start-column]
[,rendition-set] [,rendition-complement] [,character-set]
RETURNS
| OpenVMS usage: |
cond_value |
| type: |
longword (unsigned) |
| access: |
write only |
| mechanism: |
by value |
Arguments
display-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the virtual display affected. The display-id
argument is the address of an unsigned longword that contains the
display identifier.
The display identifier is returned by SMG$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, 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. If
start-column is omitted, output begins on the current
column. The start-column argument is the address of a
signed longword that contains the column number.
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$M_USER8
|
Displays user-defined attributes.
|
The display-id argument must be specified when you use
the rendition-set argument.
rendition-complement
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Attribute complement specifier. The optional
rendition-complement argument is the address of a
longword bit mask in which each attribute set causes the corresponding
attribute to be complemented in the display. All attributes that can be
specified with the rendition-set argument can be
complemented with the rendition-complement argument.
The display-id argument must be specified when you use
the rendition-complement argument.
The optional arguments rendition-set and
rendition-complement let the user control the
attributes of the virtual display. The rendition-set
argument sets certain virtual display attributes, while
rendition-complement complements these attributes. If
the same bit is specified in both the rendition-set
and rendition-complement parameters,
rendition-set is evaluated first, followed by
rendition-complement. By using these two parameters
together, the user can control each virtual display attribute in a
single procedure call. On a single-attribute basis, the user can cause
the following transformations:
| Set |
Complement |
Action |
|
0
|
0
|
Attribute set to default
|
|
1
|
0
|
Attribute on
|
|
0
|
1
|
Attribute set to complement of default setting
|
|
1
|
1
|
Attribute off
|
character-set
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the default character set for all text in this virtual
display. The character-set argument is the address of
an unsigned longword that contains the character set code. Valid values
are SMG$C_ASCII (the default) and SMG$C_SPEC_GRAPHICS.
Description
SMG$PUT_CHARS_WIDE writes double-width text to the specified virtual
display, possibly overwriting any existing text. The line cannot
contain a mixture of single- and double-width characters; if the line
previously contained any single-width characters, those characters are
replaced with blanks. The virtual cursor is left at the first character
position following the text written.
If the display has the SMG$M_TRUNC_ICON attribute, SMG$PUT_CHARS_WIDE
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_HELP_TEXT
The Output Help Text to the Display routine retrieves and outputs the
help text for the specified topic in the virtual display provided.
Format
SMG$PUT_HELP_TEXT display-id [,keyboard-id] [,help-topic]
[,help-library] [,rendition-set] [,rendition-complement]
RETURNS
| OpenVMS usage: |
cond_value |
| type: |
longword (unsigned) |
| access: |
write only |
| mechanism: |
by value |
Arguments
display-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Display identifier of the virtual display to which the help text is
written. The display-id argument is the address of an
unsigned longword that contains this virtual display identifier. Note
that this display must be pasted and cannot be occluded or batched.
keyboard-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Optional keyboard identifier of the virtual keyboard used for input.
The keyboard-id argument is the address of an unsigned
longword that contains this virtual keyboard identifier. If the
keyboard-id parameter is not specified, prompting is
disabled.
help-topic
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
Optional help topic. The help-topic argument is the
address of a descriptor pointing to the help topic string.
help-library
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
Optional help library name. The help-library argument
is the address of a descriptor pointing to the help library name. The
default is SYS$HELP:HELPLIB.HLB.
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$M_USER8
|
Displays user-defined attributes.
|
The display-id argument must be specified when you use
the rendition-set argument.
rendition-complement
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Attribute complement specifier. The optional
rendition-complement argument is the address of a
longword bit mask in which each attribute set causes the corresponding
attribute to be complemented in the display. All attributes that can be
specified with the rendition-set argument can be
complemented with the rendition-complement argument.
The display-id argument must be specified when you use
the rendition-complement argument.
The optional arguments rendition-set and
rendition-complement let the user control the
attributes of the virtual display. The rendition-set
argument sets certain virtual display attributes, while
rendition-complement complements these attributes. If
the same bit is specified in both the rendition-set
and rendition-complement parameters,
rendition-set is evaluated first, followed by
rendition-complement. By using these two parameters
together, the user can control each virtual display attribute in a
single procedure call. On a single-attribute basis, the user can cause
the following transformations:
| Set |
Complement |
Action |
|
0
|
0
|
Attribute set to default
|
|
1
|
0
|
Attribute on
|
|
0
|
1
|
Attribute set to complement of default setting
|
|
1
|
1
|
Attribute off
|
Description
SMG$PUT_HELP_TEXT lets you retrieve and output help text for a
specified topic in the virtual display specified. The text is output to
the virtual display's scrolling region. If you specify the
keyboard-id argument, you are prompted for input when
the last line of the virtual scrolling region is reached. In response
to this prompt you can either press the Return key to continue the
display, or enter a new topic to receive help on. Note that the virtual
display specified by display-id cannot be batched or
contain a viewport. If the keyboard-id argument is
specified, the virtual display cannot be occluded and must contain at
least three rows.
Condition Values Returned
|
SS$_NORMAL
|
Normal successful completion.
|
|
SMG$_ILLBATFNC
|
The virtual display or pasteboard was batched.
|
|
SMG$_INVDIS_ID
|
The
display-id is illegal, has an associated viewport, or
is occluded.
|
|
SMG$_NOTPASTED
|
The virtual display specified by
display-id is not pasted.
|
|
SMG$_
xxxx
|
Any condition value returned by SMG$SET_CURSOR_ABS or
SMG$CHECK_FOR_OCCLUSION.
|
|
LIB$_
xxxx
|
Any condition value returned by LIB$FIND_IMAGE_SYMBOL.
|
|
LBR$_
xxxx
|
Any condition value returned by LBR$OUTPUT_HELP.
|
SMG$PUT_LINE
The Write Line to Virtual Display routine writes a line of text to a
virtual display, beginning at the current virtual cursor position.
Format
SMG$PUT_LINE display-id ,text [,line-advance] [,rendition-set]
[,rendition-complement] [,flags] [,character-set] [,direction]
RETURNS
| OpenVMS usage: |
cond_value |
| type: |
longword (unsigned) |
| access: |
write only |
| mechanism: |
by value |
Arguments
display-id
| OpenVMS usage: |
identifier |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the virtual display affected. The display-id
argument is the address of an unsigned longword that contains the
display identifier.
The display identifier is returned by SMG$CREATE_VIRTUAL_DISPLAY.
text
| OpenVMS usage: |
char_string |
| type: |
character string |
| access: |
read only |
| mechanism: |
by descriptor |
The characters to be written to the virtual display. The
text argument is the address of a descriptor pointing
to the text.
line-advance
| OpenVMS usage: |
longword_signed |
| type: |
longword (signed) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the number of lines to advance after output. The
line-advance argument is the address of a signed
longword that contains the number of lines to advance. The default is
1. If you specify 0 for line-advance, SMG$PUT_LINE
overwrites any existing text.
rendition-set
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Attribute specifier. The optional rendition-set
argument is the address of a longword bit mask in which each attribute
set causes the corresponding attribute to be set in the display. The
following attributes can be specified using the
rendition-set argument:
|
SMG$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
|
flags
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Optional bit mask that specifies the action to be taken if the text
does not fit on the line. The flags argument is the
address of an unsigned longword that contains the flag. The
flags argument accepts the following values:
|
0
|
Does not wrap (default).
|
|
SMG$M_WRAP_CHAR
|
Wraps at the last character on the line.
|
|
SMG$M_WRAP_WORD
|
Wraps at the last space on the line.
|
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$C_ASCII (default) and SMG$C_SPEC_GRAPHICS.
direction
| OpenVMS usage: |
mask_longword |
| type: |
longword (unsigned) |
| access: |
read only |
| mechanism: |
by reference |
Specifies the direction to scroll, if scrolling is necessary. The
direction argument is the address of a longword bit
mask that contains the direction code. Valid values are SMG$M_UP
(default) and SMG$M_DOWN.
Description
SMG$PUT_LINE writes lines of text to the virtual display, beginning at
the current line. Once text reaches the bottom or top line (depending
on the scrolling direction), subsequent calls to this routine cause the
display to scroll. SMG$PUT_LINE writes out the entire line, starting at
the current virtual cursor position. If the caller's text does not span
the entire line, the line is padded with blanks.
If flags specifies wrapping, lines are scrolled
line-advance times to make room for the overflow
characters in the "next" line. The "next" line is
determined by the scrolling direction. If
flags does not specify wrapping, excess characters are
discarded.