Author: Craig Stuntz
The error in the title comes from InterBase. Actually, the full error is:
[DataDirect][ODBC InterBase driver][InterBase]Dynamic SQL Error, SQL error code = -804, SQLDA missing or incorrect version, or incorrect number/type of variables.
I’ve seen this error before when the wrong InterBase client (gds32.dll) version was loaded by the application, or when the wrong number…
Author: Andrew Bond
While doing some bug fixing and cleanup in a web application, I had the chance to go a little deeper into the jQuery user input validation framework. There are many tutorials available about implementing custom validations. But what I wanted to do was to…
Author: Pawe Gowacki
Do you remember that Delphi 6 was the first IDE in the market with Web Services support? This trend continues and Delphi 2009 supports building web service servers and clients:-) In this post I’m going to describe all steps neccessary to build…
Author: Barry K21557
[This blog post is by Allen Bauer, but during the blog engine migration was attributed to the wrong author.]
Solving problems can be fun and challenging. What is really challenging is solving a problem using only the tools at hand. During the development of Delphi 2009, there were several language features that were dropped in favor of generics and anonymous methods. One such…
Author: Allen
Ever since before Delphi 1, the (then Delphi only) RAD Studio IDE has been full of home-grown multicast event class types. I usually refer to these as an “event bus.” This is from my hardware days when I designed microcontroller based…
Author: Craig Stuntz
For the past couple of days I’ve been working on an experimental IntraWeb (a.k.a., “VCL for the Web”) project. Since I typically generate user interfaces dynamically, I wanted to see how that worked with IntraWeb. On the surface, it’s…
Author: deepak S1409
Recently, I was exploring writing an ADO SQL logging tool (sorta like BDE monitor) – more details on that later – which would show SQL statements on the screen as they ran. All was well until I figured I needed to be able to see my SQL logging form even when a Modal window was being displayed. TForm.ShowModal() disables all other windows in the current thread, so…
Author: deepak S1409
Download the code for this white paper (dlprogress.zip, 12 KB)
Abstract
This paper talks about how you can show a download “progress” bar (like many download utilities do) when using SOAP to transfer data. I’ve used Delphi 7 in this…
Author: deepak S1409
From a recent thread in borland.public.delphi.nativeapi.win32:
There’s a problem in the way Delphi handles multiple open forms. Delphi applications can have multiple forms, and you will notice that each form does not appear on the task bar. Delphi…
Author: David O17638
One item in my previous post that I specifically didn’t address is the notion of using Eclipse instead of VS. Again, this is something we’d be remiss to ignore. However, the primary ding against Eclipse is its reliance on a JVM. Were it not for the fact that we are trying to support the .NET platform, this might be a reasonable path to…
