Craig Chapman February 22, 2024

The costs and benefits of Interfaces.

I’m a fan of interface driven development in Delphi, and I am not quiet about that. Like any syntax feature however, it’s important to understand both the benefits, and the costs of the feature. Interfaces have several great benefits, but of course they also come…

Craig Chapman December 2, 2018

Lock-less Multi-Threading in Delphi

In this video, I demonstrate a technique for communicating between threads in a Delphi application, without using typical locking mechanisms such as critical sections. I create essentially a ring-buffer based signaling system ( a message pipe ) for sending messages from one thread to another,…

Craig Chapman October 4, 2018

Custom VCL Control for getting window handles. 

Over the years, I don't think I can count the number of times that I've wanted to send window messages to some other application. It can be useful for automating the target application, or even as a primitive form of Inter-process communication. Each time, I…

Craig Chapman August 14, 2018

Building REST services with RAD Server

Almost identical videos on how to build REST applications using RAD Server, with either Delphi or C++ Builder. These would have been recorded while I was an employee at Embarcadero, for a skill-sprint, code-rage, or other online community event. (Delphi version) (C++ version)

Craig Chapman March 14, 2018

Media file meta-data on Windows in Delphi.

Here's a little Déjà vu for regular readers of my blog. One of my customers emailed me with an interesting problem this morning. “I need to be able to peek into a video file, specifically a .mp4 file, and determine if it’s PAL or NTSC.” This…