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Delphi

SQLDA missing or incorrect version, or incorrect number/type of variables

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…
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News

Customizing jQuery Validation

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…
Delphi

Writing games with Delphi. Ideas?

Author: Aaron Rosenberg How would you approach creating a game with Delphi? I keep playing with Delphi Prism and recently downloaded XNA Game Studio 3.0. It installs very nicely into Delphi Prism. I wonder what is the most commonly used software for creating games that will run on Windows, but also game consoles like Wii, XBox and Playstation and portables like Nintendo DS. Do you remember…
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Delphi

A "Nullable" Post

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…
News

Multicast events using generics

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…
Delphi

Dynamic Creation of IntraWeb Components

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…
Delphi

Installing ActiveX Controls in RAD Studio 2007

Author: Craig Stuntz The procedure for installing ActiveX controls on the Delphi/RAD Studio 2007 component palette is apparently confusing to some users of older versions of Delphi. So here’s a simple example. In this example, I’m installing the type libraries needed to use the Crystal Reports 9 ActiveX viewer, and the associated runtime type library. First I create a package…
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