DP4 Knowledge Base


Find answers to questions about DP4 here. Most recent articles come first. Don't miss the Tips section!

Article Summary Description Date Updated
A4000038 Running DP4 on 64-bit versions of Windows 14 Oct 2009
A4000037 Notes on using command line arguments with the Windows Service Manager. 19 May 2008
A4000036 Running DP4 based systems on Windows Vista and Windows 7. 4 May 2010
A4000034 Recently discovered problems in database manager. 3 Mar 2006
A4000035 Note on bug in Windows API DeferWindowPos() and how it affects DP4. 17 Jan 2006
A4000032 How to run 4.622 or later DP4 database utilities against an earlier DP4 release 1 Jun 2005
A4000028 Dr Watson can cause 4.620 DP4 to hang 27 Jan 2005
A4000031 Achieving Clean Shutdowns of Complex DP4 Configurations. 5 Apr 2005
A4000030 Information for users of Casewise Modeler. 5 Oct 2004
A4000029 Installing Windows XP SP2 stops DP4 working. 18 Aug 2004
A4000026 Information for Help and Web Authors about this Site 15 Dec 2003
A4000024 DP4 Networking and Port 5000 03 Dec 2003
A4000022
Updated with information on Windows XP Tablet PC edition and on conflict with SSDP Discovery Service
DP4 on Windows XP and Windows 2003.
03 Dec 2003
A4000021 DP4 for Windows CE 13 Jan 2005
A4000025

Problem with maps when AUXDISTR -NOLOCAL is used

1 Jul 2003
A4000023 DP4 Autoload problems with ODBC 26 Apr 2002
A4000020 A Note on DP4 network time-outs. (FAIL error 7 Addditional code 259) 29 Oct 2001
Documentation Introductory Information on DP4 DP4 Terminal Server 14 Jun 2001
A4000018 Using SQL Server 2000 as data source for AUXWODBC 14 Mar 2001
A4000017 Tips and Information on Report Writer 05 Mar 2001
A4000014 Java Interfaces to DP4 databases 27 Sep 2000
Documentation How DP4 SQL/ODBC constructs column names N/A
A4000012 Unable to access DP4 from MFC Wizard created OLE DB application 2 Aug 2000
A4000011 Unable to display time fields from DP4 database in Crystal Reports Version 8. 7 Jun 2000
A4000010 Unable to display icons from .ICO files in DP4. 20 Mar 2000
A4000009 Necessary changes to Intel Linux/Unix versions of DP4 that will give rise to compatibility issues for existing programs. 01 Feb 2000
A4000008 Joining tables using DP4 SQL. This article has lots of background on SQL join syntax and some useful info on how DP4 optimises (or doesn't!) various search conditions. 19 Jan 2000
A4000007 Problems with REDW facility in 4.6xx. 5 Jan 2000
A4000006 Bug in map positioning below menu bar. 23 Nov 1999
A4000005 Setting a character field to null value in 4.6xx 23 Nov 1999
A4000004 NO_TRAILING_BLANKS not implemented by DFPRINT. 23 Nov 1999
A4000003 Limitation in Zoom facility of QAB. 18 Nov 1999
A4000001 How to get rid of title bar, close buttons etc. in PROGRUN 18 Nov 1999

Here are some tips on how to get the best out of DP4

Article Summary Description Date Added
T4000006 Creating a read-only connection to the DP4 ODBC driver 6 Sep 2004
Diagnostics How to enable and use DP4 Error logging to get additional diagnostics from the Windows and Windows CE versions of DP4. 26 Apr 2002
T4000005 Avoiding rounding errors in QAB. 19 Apr 2000
T4000004 Common problems with QAB, and how to avoid them. 4 Feb 2000
T4000003 Help! My database is corrupt and I don't have a backup. 15 Dec 1999
T4000001 Easy ways to speed up some DP4 utilities. 1 Dec 1999