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Q214656: Absolute Horizontal Move Command Handled Incorrectly if PDT Used

Article: Q214656
Product(s): Microsoft SNA Server
Version(s): WINDOWS:3.0,3.0SP1,3.0SP2,3.0SP3,4.0,4.0SP1,4.0SP2
Operating System(s): 
Keyword(s): kbsna300sp4fix kbsna400sp3fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft SNA Server, versions 3.0, 3.0SP1, 3.0SP2, 3.0SP3, 4.0, 4.0SP1, 4.0SP2 
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SYMPTOMS
========

AS/400 print jobs that contain the Absolute Horizontal Move SCS command will
print with incorrect formatting if the AS/400 print session is configured to use
a Printer Definition Table (PDT) file. The incorrect formatting will cause data
to be printed farther from the left margin than was intended.

As an example, assume a print job that is supposed to generate the following
output:

  123456789
      AAAA

The second line of the print job is supposed to print 'AAAA' (without quotes)
starting at print position (column) 5. If this print job includes an Absolute
Horizontal Move command at the beginning of the second line that specifies that
the next position is column number 5, the following output will be generated if
the SNA Server print session is configured to use a PDT file:

  123456789
       AAAA

The second line will start printing at print position (column) 6 instead of print
position 5.

This does not occur if the AS/400 print session is not configured to use a PDT in
SNA Server Manager.

For additional information about a similar problem with the Absolute Vertical
Move Command, please see the following article in the Microsoft Knowledge Base:

Absolute Vertical Move Command Handled Incorrectly if PDT Used

CAUSE
=====

The virtual print driver used by SNA Server's host print service does not keep
track of the print job's current print position when a PDT file is used for a
print session. Consequently, the 5250 print provider always uses a current print
position of 1 when calculating the number of print positions to move across the
current print line when processing an Absolute Horizontal Move command. This
results in extra spaces being sent to the printer, which moves the print data
too far across the current print line.

The current print position is tracked when a PDT file is not used, which is why
this problem does not occur when a PDT file is not used for the AS/400 print
session.

RESOLUTION
==========

SNA Server 4.0
--------------

To resolve this problem, obtain the latest service pack for SNA Server version
4.0. For additional information, please see the following article in the
Microsoft Knowledge Base:

  Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack


SNA Server 3.0
--------------

To resolve this problem, obtain the latest service pack for SNA Server version
3.0. For additional information, please see the following article in the
Microsoft Knowledge Base:

  Q184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Microsoft SNA Server versions
3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, 4.0 SP1, and 4.0 SP2. This problem was
first corrected in SNA Server version 3.0 Service Pack 4 and SNA Server version
4.0 Service Pack 3.

MORE INFORMATION
================

After applying the update, the host print service keeps track of a print job's
current print position when a PDT file is used.

The SCS control code Presentation Position (PP) '0x34' is commonly used in AS/400
(APPC) printing. This control code allows the print position to be moved either
horizontally or vertically, relative to the previous position or to an absolute
position.

The following are the four forms of the Presentation Position SCS control code.

  Absolute Horizontal Presentation Position (AHPP) '0x34C0(nn)'
  Parameters: nn - The column number the print position is set to.
  Example: 34C00F
  34C0 - AHPP
  0F - column number 15

  Relative Horizontal Presentation Position (RHPP) '0x34C8(nn)'
  Parameters: nn - The number of columns to move from the current print
  position.
  Example: 34C80F
  34C8 - RHPP
  0F - 15 columns

  Absolute Vertical Presentation Position (AVPP) '0x34C4(nn)'
  Parameters: nn - The line number the print position is set to.
  Example: 34C40F
  34C4 - AVPP
  0F - line number 15

  Relative Vertical Presentation Position (RVPP) '0x344C(nn)'
  Parameters: nn - The number of lines to move from the current print position.
  Example: 344C0F
  344C - RVPP
  0F - 15 lines

Additional query words:

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Keywords          : kbsna300sp4fix kbsna400sp3fix 
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ400
Version           : WINDOWS:3.0,3.0SP1,3.0SP2,3.0SP3,4.0,4.0SP1,4.0SP2
Issue type        : kbbug
Solution Type     : kbfix

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