VMS Help
RTL Routines, SMG$, SMG$PUT_HELP_TEXT
*Conan The Librarian (sorry for the slow response - running on an old VAX)
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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$PUT_HELP_TEXT display-id [,keyboard-id] [,help-topic]
[,help-library] [,rendition-set]
[,rendition-complement]
OpenVMS usage:cond_value
type: longword (unsigned)
access: write only
mechanism: by value
display-id
OpenVMS usage:identifier
type: longword (unsigned)
access: read only
mechanism: by reference
Display identifier of the virtual display to which the help text
is written. The display-id argument is the address of an unsigned
longword that contains this virtual display identifier. Note that
this display must be pasted and cannot be occluded or batched.
keyboard-id
OpenVMS usage:identifier
type: longword (unsigned)
access: read only
mechanism: by reference
Optional keyboard identifier of the virtual keyboard used for
input. The keyboard-id argument is the address of an unsigned
longword that contains this virtual keyboard identifier. If the
keyboard-id parameter is not specified, prompting is disabled.
help-topic
OpenVMS usage:char_string
type: character string
access: read only
mechanism: by descriptor
Optional help topic. The help-topic argument is the address of a
descriptor pointing to the help topic string.
help-library
OpenVMS usage:char_string
type: character string
access: read only
mechanism: by descriptor
Optional help library name. The help-library argument is the
address of a descriptor pointing to the help library name. The
default is SYS$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_ 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 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
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