Document revision date: 19 July 1999
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OpenVMS RTL Screen Management (SMG$) Manual
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off-characteristics3


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

Bit mask that specifies the terminal characteristics to be reset from $TT3DEF. The off-characteristics3 argument is the address of an unsigned longword that contains the bit mask.

old-characteristics3


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

Retrieves the current terminal characteristics in the third group. The old-characteristics3 argument is the address of an unsigned longword that contains the bit mask.

Description

SMG$SET_TERM_CHARACTERISTICS changes or retrieves the terminal characteristics for a given pasteboard. The characteristics are defined by the $TTDEF and $TT2DEF macro modules in Digital-supplied system symbol libraries. A benefit of using this routine is that it allows you to control multiple terminal characteristics in a single routine call.

Condition Values Returned

SS$_NORMAL Normal successful completion.
SMG$_NOT_A_TRM Pasteboard is not a terminal.
SS$_xyz Errors from LIB$QIOW.

Example


10      !+ 
        ! This VAX BASIC program demonstrates the use of the 
        ! SMG$SET_TERM_CHARACTERISTICS routine. 
        !- 
 
        OPTION TYPE = EXPLICIT 
        OPTION CONSTANT TYPE = INTEGER 
 
        %INCLUDE "$SSDEF"  %FROM %LIBRARY "SYS$LIBRARY:BASIC$STARLET" 
        %INCLUDE "$TTDEF"  %FROM %LIBRARY "SYS$LIBRARY:BASIC$STARLET" 
        %INCLUDE "$TT2DEF" %FROM %LIBRARY "SYS$LIBRARY:BASIC$STARLET" 
 
        DECLARE LONG S, PASTEBOARD_ID, ON_1, ON_2, OFF_1, OFF_2, OLD_1, OLD_2 
 
        EXTERNAL LONG FUNCTION LIB$SIGNAL( LONG BY VALUE ),     & 
                               SMG$CREATE_PASTEBOARD( LONG ),   & 
                               SMG$SET_TERM_CHARACTERISTICS( LONG, LONG, & 
                                LONG, LONG, LONG, LONG, LONG ) 
        !+ 
        ! Create the pasteboard 
        !- 
 
        S = SMG$CREATE_PASTEBOARD( PASTEBOARD_ID ) 
        IF S <> SS$_NORMAL THEN CALL LIB$SIGNAL( S ) END IF 
 
        !+ 
        ! Terminal characteristics to be set 
        !- 
 
        ON_1 = TT$M_LOWER 
        ON_2 = TT2$M_EDITING + TT2$M_EDIT 
 
        !+ 
        ! Terminal characteristics to be reset 
        !- 
 
        OFF_1 = TT$M_WRAP + TT$M_MECHTAB 
        OFF_2 = TT2$M_PASTHRU + TT2$M_INSERT 
 
        !+ 
        ! Change the characteristics of the terminal line associated 
        ! with the pasteboard.  They will be reset at image exit or when 
        ! SMG$DELETE_PASTEBOARD is called. The previous characteristics 
        ! are returned in OLD_1 and OLD_2. 
        !- 
 
        S = SMG$SET_TERM_CHARACTERISTICS( PASTEBOARD_ID, ON_1, ON_2, & 
                                          OFF_1, OFF_2, OLD_1, OLD_2 ) 
        IF S <> SS$_NORMAL THEN CALL LIB$SIGNAL( S ) END IF 
 
        IF (OLD_1 AND TT$M_WRAP) <> 0 
        THEN 
            PRINT "WRAP was set" 
        ELSE 
            PRINT "NOWRAP was set" 
        END IF 
 
        IF (OLD_2 AND TT2$M_ANSICRT) <> 0 
        THEN 
            PRINT "Pasteboard is an ANSI terminal" 
        ELSE 
            PRINT "Pasteboard is not an ANSI terminal" 
        END IF 
 
        END

SMG$SNAPSHOT

The Write Snapshot routine writes the current pasteboard buffer to the file or hardcopy terminal specified by the pasteboard identifier.

Format

SMG$SNAPSHOT pasteboard-id [,flags]

RETURNS


OpenVMS usage: cond_value
type: longword (unsigned)
access: write only
mechanism: by value

Arguments

pasteboard-id


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

Specifies the file or hardcopy terminal to receive the contents of the pasteboard buffer. The pasteboard-id argument is the address of an unsigned longword that contains the pasteboard identifier. The output device associated with pasteboard-id is specified by the output-device argument of SMG$CREATE_PASTEBOARD.

flags


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

Optional bit mask that specifies whether a form feed is passed. The flags argument is the address of an unsigned longword containing the flag. Valid values for flags are as follows:
0 No form feed is passed.
SMG$M_FORM_FEED The first line passed is a form feed.

Description

SMG$SNAPSHOT is meant to be used when output to the pasteboard is controlled by OpenVMS RMS --- that is, when the output device is a file, a hardcopy terminal, or a terminal of unknown type. In this case, the pasteboard information is stored internally and is sent to either the file, hardcopy terminal, or the terminal of unknown type whenever SMG$SNAPSHOT is called. This allows you to capture pasteboard images in a file.

Pasteboard batching does not affect the SMG$SNAPSHOT routine. If you enable pasteboard batching with the SMG$BEGIN_PASTEBOARD_UPDATE routine, a buffer is created that saves all output to a pasteboard until you disable batching with a call to SMG$END_PASTEBOARD_UPDATE. When you call SMG$SNAPSHOT, you get a snapshot of that current pasteboard buffer --- not what is possibly a stale screen image.

This routine must be used if the SMG$_WILUSERMS error is returned by other SMG$ routines.

Condition Values Returned

SS$_NORMAL Normal successful completion.
SMG$_NOTRMSOUT Successful completion. No action was taken because output is not controlled by RMS.

Any condition value returned by RMS.

SMG$SNAPSHOT_TO_PRINTER

The Write Snapshot to Printer routine writes the current pasteboard buffer to the printer attached to the terminal.

Format

SMG$SNAPSHOT_TO_PRINTER pasteboard-id ,device-type [,flags]

RETURNS


OpenVMS usage: cond_value
type: longword (unsigned)
access: write only
mechanism: by value

Arguments

pasteboard-id


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

Identifier of the pasteboard whose snapshot will be sent to a printer. The pasteboard-id argument is the address of an unsigned longword that contains the pasteboard identifier.

device-type


OpenVMS usage: device_name
type: character string
access: read only
mechanism: by descriptor

Specifies the type of printer to which the output associated with this pasteboard will be written. The device-type argument is the address of a descriptor that points to the name of the output device. Valid values for this argument (for example, LA50) are defined in SYS$SYSTEM:TERMTABLE.TXT.

flags


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

Optional bit mask that specifies whether a form feed is passed. The flags argument is the address of an unsigned longword containing the flag. The valid value for the flags argument is as follows:
SMG$M_FORM_FEED Output a form feed as the first record.

Description

SMG$SNAPSHOT_TO_PRINTER writes the current pasteboard buffer to the specified printer. This routine returns SMG$_OPNOTSUP if the output device (terminal) does not have a printer attached to its printer port.

Pasteboard batching does not affect the SMG$SNAPSHOT_TO_PRINTER routine. If you enable pasteboard batching with the SMG$BEGIN_PASTEBOARD_UPDATE routine, a buffer is created that saves all output to a pasteboard until you disable batching with a call to SMG$END_PASTEBOARD_UPDATE. When you call SMG$SNAPSHOT_TO_PRINTER, you get a snapshot of that current pasteboard buffer --- not what is possibly a stale screen image.

Condition Values Returned

SS$_NORMAL Normal successful completion.
SMG$_OPNOTSUP Operation not supported.

Any condition value returned by LIB$GET_VM, LIB$FREE_VM, or $QIOW.

SMG$UNPASTE_VIRTUAL_DISPLAY

The Remove Virtual Display routine removes a virtual display from a pasteboard.

Format

SMG$UNPASTE_VIRTUAL_DISPLAY display-id ,pasteboard-id

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 to be removed from a pasteboard. 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.

pasteboard-id


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

Specifies the pasteboard from which the virtual display is removed. The pasteboard-id argument is the address of an unsigned longword that contains the pasteboard identifier.

Description

SMG$UNPASTE_VIRTUAL_DISPLAY removes the specified display from the specified pasteboard, and thus from the screen associated with the pasteboard. This routine does not destroy the virtual display or its contents; it only removes its association with a particular pasteboard and its visibility on the screen. Any text occluded by the specified virtual display becomes visible again.

Condition Values Returned

SS$_NORMAL Normal successful completion.
SMG$_INVARG Invalid argument. The specified virtual display is not pasted to the specified pasteboard.
SMG$_INVDIS_ID Invalid display-id.
SMG$_INVPAS_ID Invalid pasteboard-id.
SMG$_NOTPASTED The specified virtual display is not pasted to the specified pasteboard.
SMG$_WRONUMARG Wrong number of arguments.

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