Posted by jpluimers on 2013/03/22
After installing the WebSphere MQ 7.x client software, you must reboot.
Otherwise the directory where mqic.dll resides doesn’t get added to the system path.
I was bitten by this with an unattended installation at a client where they forgot to have the system to reboot.
–jeroen
Posted in Development, MQ Message Queueing/Queuing, Power User, Software Development, WebSphere MQ, Windows | Leave a Comment »
Posted by jpluimers on 2013/03/21
Sometimes, Delphi XE2 gets confused after converting an old Delphi project because the Unit scope names are not correct. When creating a new Delphi XE2 application, the Unit scope names are as follows:
This means that if you don’t prepend a unit with a Unit scope prefix, Delphi will automatically try the list above. The thing is: when importing a Delphi project from an old Delphi version, the Unit scope names are somehow “guessed”, and not always complete:
This means it cannot resolve the right name for the VCL units like Controls or Forms, and you get a nice compiler error: But with the default, it cannot resolve the Windows and other units in the Winapi scope. So the list I normally use is one of these:
(Yes, some apps still store Paradox data locally and use the BDE)
–jeroen
Posted in Delphi, Delphi XE2, Delphi XE3, Development, Software Development | 2 Comments »
Posted by jpluimers on 2013/03/20
Fijne foutmelding:
Uw formulier voldoet niet aan de volgende controles:
!
U heeft geen correct telefoonnummer ingevoerd. Een telefoonnummer moet beginnen met een 0 of + , bestaat uit minimaal 10 cijfers en mag geen leestekens bevatten
•
U heeft geen correct telefoonnummer ingevoerd. Een telefoonnummer moet beginnen met een 0 of + , bestaat uit minimaal 10 cijfers en mag geen leestekens bevatten
Inderdaad twee velden: telefoon en mobiel.
Noem ze dan niet beide “telefoonnummer!”.
En hou je gewoon aan de ITU-T E.123 standaard waar spaties, haakjes en plus gewoon zijn toegestaan.
Het vervolg is nog meer bizar:
Let op: een aantal gegevens kunt u niet meer wijzigen nadat ze zijn opgeslagen.
Zijn uw gegevens correct ingevuld?
Uiteraard staat nergens aangegeven WELKE gegevens niet meer te wijzigen zijn.
Stel je voor!
–jeroen
via: eLoket (Profiel).
Posted in Development, Software Development, Usability, User Experience (ux) | Leave a Comment »
Posted by jpluimers on 2013/03/20
I recently had an error like this when building with packages:
[DCC Error] E2201 Need imported data reference ($G) to access 'VarCopyProc' from unit 'SynCommons'
It was a bit hard to find good information about this error, mainly because of two reasons:
Finally, it was the FastMM and D2007 – Delphi Language BASM – BorlandTalk.com thread pointing me to Hallvard’s Blog: Hack#13: Access globals faster ($ImportedData).
That explained the error was caused by:
{$G+} or {$IMPORTEDDATA ON} in the failing package would prevent that accessSomehow that does not work for all cases. Apparently, the VarCopyProc isn’t exported from the Delphi RTL as that package is compiled in the $G- state.
So I had to add the USEPACKAGES define to the conditional defines list, which forces the SynCommons to use the standard version of the RecordCopy method in stead of a highly optimized one that calls VarCopyProc.
–jeroen
Posted in Delphi, Delphi XE2, Delphi XE3, Development, Software Development | 2 Comments »
Posted by jpluimers on 2013/03/20
If you think it’s easy to deal with RSS read this:
inessential.com: Brian’s Stupid Feed Tricks.
It reminds me so much about handling StUF.
–jeroen
Posted in Development, HTML, HTML5, SOAP/WebServices, Software Development, StUF, Web Development | Leave a Comment »
Posted by jpluimers on 2013/03/19
When porting some communications code that used records as properties from Delphi 2006 to Delphi XE2, I came across a tightened compiler error “E2197 Constant object cannot be passed as var parameter“.
Let me first explain the good old occurrence of E2197 with some code that uses my last Variant Records example:
Just look at TPacket.InitializePacket and TPacketBase.InitializeFPacket: Basically even though the Packet property has storage specifiers indicating it directly reads from a field and directly writes to a field, you cannot pass it as a var parameter in the FillChar method.
Of course you can with a field, you can pass it to FillChar without trouble as TPacketBase.InitializeFPacket shows. Read the rest of this entry »
Posted in Delphi, Delphi 2006, Delphi XE2, Delphi XE3, Development, Software Development | 3 Comments »
Posted by jpluimers on 2013/03/14
Variant Records are a feature that has been in the Pascal language since Standard Pascal.
A cool page for historic perspective is R3R: Pascal Features in Popular Compilers, hopefully someone will update it to more modern versions of the mentioned compilers.
There is not much official documentation on the Delphi side on this, so below some parts of a case I used for a project that started in 1997 and is still in use to day. Read the rest of this entry »
Posted in APPC, AS/400 / iSeries / System i, ASCII, COBOL, Communications Development, Conference Topics, Conferences, CPI-C, Delphi, Delphi 1, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi XE, Delphi XE2, Delphi XE3, Development, Encoding, Event, HIS Host Integration Services, Internet protocol suite, MQ Message Queueing/Queuing, SNA, Software Development, TCP, Unicode, UTF-8, WebSphere MQ | 9 Comments »
Posted by jpluimers on 2013/03/13
Every once in a while I manage to check “Automatically close on successful compile” during compilation, the compiler progress disappears, and I loose my clue if compilation ended or not.
This is how to fix it:
–jeroen
via: Embarcadero Newsgroup Archive :: embarcadero.public.delphi.ide :: Re: D2006 compiler progress.
Posted in Delphi, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Development, Software Development | 7 Comments »
Posted by jpluimers on 2013/03/12
Few people know about a Delphi language feature that has been present since Delphi 1: prepending the type definition with a type keyword to make the type getting a new identity.
Each time I use it, I have to do some browsing for the consequences, and this time I wrote down some notes and created a small example program (source is also below).
This time I needed it when writing class wrappers on top of the Delphi bindings for WebSphere MQ.
WebSphere MQ has Queues where you can put and get messages. It also has Queue Managers to which you connect, and that provide queuing services and manages queues.
Both Queues and Queue Managers have names that can be up to 48 (single byte) characters long.
Those names mean totally different things, so though the have similar data types, they have a different identity.
The same holds for 20 byte character arrays (they can be used as names for ChannelName, ShortConnectionName and MCAName). The 264 byte character array is so far used for ConnectionName only.
Distinguishing those types: That’s what “type types” in Delphi are all about. Read the rest of this entry »
Posted in CP437/OEM 437/PC-8, Delphi, Delphi 1, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Development, Encoding, Shift JIS, Software Development, Unicode, UTF-8, UTF8 | 1 Comment »
Posted by jpluimers on 2013/03/07
A while ago I was involved in a C header file translation for the header files of the IBM WebSphere MQ family of products, and the table helped a lot for the base types:
A few C things missing there:
These articles helped resolving the missing bits:
Now we can do SOA between System i (a.k.a. iSeries, aka AS/400) from Windows 7.
–jeroen
PS: Later I found someone else also did a lot of work on this and published http://www.milosev.com/Download/WebSphere/WebSphereD2009.rar [WayBack] (thanks Murat Mutlu for pointing me at that) with a very thin note at http://www.milosev.com/32-mq/mq/171-delphi-2009.html [WayBack]
Posted in C++, C++ Builder, Delphi, Delphi 2006, Delphi XE2, Development, MQ Message Queueing/Queuing, Software Development, WebSphere MQ | Leave a Comment »
The Wiert Corner - irregular stream of stuff 