Craig Chapman Delphi, the best kept secret. I tire of hearing it. Who uses Delphi? Isn’t it old? It’s niche? Can I get a job in it? Around 20 years or so of hearing the same ill-considered non-sense perpetuated. It’s time to set the record straight, and to be honest too. Introduction There’s a lot of negative … Read more
Memory Safety and Object Pascal Introduction The U.S. government recently made an appeal to the software development industry, to stop using C and C++, and to favor “Memory Safe” languages instead. Object Pascal is recognized by the NSA as a memory safe language, however, there does seem to be some misunderstanding in the community about … Read more
The costs and benefits of Interfaces. Introduction 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 with costs.Today, I’m … Read more
Why not GitHub? – Because not Git… If you feel you’re having “De ja vu”, this is possibly the third time that I’ve written about not using GitHub, or more specifically, not using Git. I’ve wrestled with this problem for several years now, and finally, I’m just done trying to use GitHub to host my … Read more
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, and then use two such pipes … Read more
Custom VCL Control for getting window handles. (Spy++ style reticle) Introduction 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, … Read more
Building REST services with RAD Server for Delphi and C++ Builder. 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, best viewed full-screen >= … Read more
Media file meta-data on Windows in Delphi. Introduction 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 seemed like a … Read more
Media file meta-data on Android in Delphi. Introduction 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 seemed like a fun challenge, so I thought I’d write a helper class … Read more
Present App, a 23rd birthday present to Delphi I decided to write an app to celebrate Delphi’s 23rd birthday and valentines day.Happy Birthday my beloved Delphi! The binaries provided here are Debug builds, and should be considered an Alpha version. The following are untested binaries for Mac / iOS provided by Jim McKeeth (Thank you!)Note: … Read more
The Ultimate Developer Keyboard? I never really thought of my keyboard as an important accessory, but rather, as that essential item that you buy for the cheapest price possible and be done with. I mean, a keyboard is a keyboard right? Well, I discovered that your choice of keyboard can make a big difference, and … Read more
Simple multi-threading applications A bit of an older post, essentially demonstrating TThread at its most basic level. Best viewed full screen >= 1080p
From CSV to SQL Server like a JEDI. I needed to get some simple sample data from a CSV file into a SQL database, and it occurred to me that I’d seen a nice CSV component several years ago, in the JEDI component set. In this short video, I’ll demonstrate loading CSV data into a … Read more
Embed the Chromium browser in your Delphi projects using DCEF3 In this video, I demonstrate installing the DCEF3 project into Delphi/RAD 10.2 Tokyo to provide the embedded Chromium browser to your VCL and Windows FMX projects. Since the chromium browser is used by default on Mobile targets, this allows your windows applications to use a … Read more
Using TPath to locate useful paths A quick tip for cross-platform development.How to use the TPath class to locate useful directories across multple platforms. – I don’t remember recording this video, but from the sound of my voice and how slowly I appear to be thinking in places, it seems I may have been sick … Read more
Installing WebBroker projects in Microsoft IIS
RAD Server for REST (RAD Mobile Boot Camp Day 3)
REST, You’re doing it wrong. Introduction My wife recently expressed her frustration with the abundance of blog posts entitled ‘you’re doing it wrong’, or some approximation there-of; and so I could hardly resist writing one of my own! In this post I’d like to take a look at REST, and how it’s being used, or … Read more
Daemonizing a WebBroker Application on Linux. Recently I wrote a blog post on using the fork() instruction to create a Daemon under Linux with Delphi. In that post, the Daemon which is created does nothing but enter into an infinite loop. For a recent webinar, I expand on this technique to turn a WebBroker application … Read more
Binding to dynamic libraries from your Delphi applications. During one of my webinars this morning on migrating services from windows to Linux, a question was raised about how to import libraries to Delphi. In this post I’d like to explain what I’d done in that webinar in more detail, and show you how you can … Read more
Calling Linux Commands from Delphi One of the great features of Linux is that you can do just about anything from the command line. If we’re able to gain access to command line instructions from our Delphi applications, this will give us a very powerful API for the system. In this video I’m going to … Read more
Creating a Linux Daemon (service) in Delphi. Edit: I originally wrote this post back in April 2017. Three months after I did, Paolo Rossi (MVP) also published a post on writing a Linux Daemon in Delphi entitled “Building a (real) Linux daemon with Delphi” I have to assume, given that Linux support was still new … Read more
RAD Studio Tip: Using resource scripts to organize project dependencies. RAD Studio has been around for a very long time, and continues to see new feature development. Consequently, it’s sometimes easy to forget some of the great features that have been included in the product for several years. This happened to me recently and so I … Read more
Embarcadero Delphi Linux Bootcamp
On SoA and SOAP and REST with WebBroker There has been a lot of talk from Embarcadero recently, regarding their RAD Server product, which is an excellent product, but today I’d like to discuss a far older technology included with RadStudio and related products. Web Broker has been in Rad Studio since the 90’s and … Read more
Windows Media Player in Delphi Introduction Delphi ships with a component ‘TMediaPlayer’ for playing media files such as video and audio. This component remains in Delphi for the sake of compatibility with older versions, but is quite out-dated and, due to a decreasing number of compatible codecs, it is becoming difficult to maintain. There is … Read more
Configure Delphi and RedHat or Ubuntu for Linux development. One of the more exciting features of the pending 10.2 release of Delphi and RAD Studio, is support for targeting Linux. In this post, I’m going to step you through setting up your development environment to deploy applications to either RedHat Enterprise or Ubuntu 16.04. From … Read more
Dialogs on Android. (Don’t brutally roll your own!) Recently for my “Brutally Roll Your Own Backend” video series, I built a custom input dialog box for use on an Android device.As I was writing it I knew there must be something not quite right about what I was doing, because I had to use “Application.ProcessMessages()” … Read more
The encapsulation bug that was a feature. The recent release of RAD Studio Berlin 10.1 saw a fix to a long standing bug in the Delphi compiler. That-is, helper classes are no longer able to access the private members of their base class, as they’d been able to do in the past. This put me … Read more
COM object written in C#, Consumed in Delphi. Recently, while working with a customer on a .NET interop problem, I found myself needing to consume a COM object created in .NET from within Delphi. I recorded myself creating and consuming the COM object so that I can share it with you, enjoy.
Creating and Consuming Soap Services in Delphi. Introduction Today I’d like to show you how you can create and consume SOAP based web services. This is a frequent question from my customers, and so I’ve decided to write up the process here. Edit: Delphi can consume any SOAP service as a client, however, the server-side SOAP … Read more
JSON with RadStudio Delphi or C++ Builder An introduction to JSON and using it within RadStudio Delphi or C++ Builder. What is JSON? JSON (JavaScript Object Notation) is a popular format for the encapsulation of structured data. If you’re familiar with XML, you can consider JSON as doing the same job fundamentally, though the two are … Read more
Use RadStudio with Jenkins – no plugin How to create a job for Jenkins Build Server which will build and execute a unit test application written using Delphi, and without using any Jenkins plugin. This should work with minimal alteration for C++ Builder too. Pre-requisits You should already have installed Embarcadero Delphi XE2 or newer … Read more
Connecting RadStudio to MySQL with FireDAC A customer called our office recently saying that they could not make Rad Studio connect to a MySQL database, and that an internet search on how to do this had yielded no results. I’ve been using MySQL with Delphi for years, and so this is a situation I set … Read more
Databases at Runtime with RadStudio It can be advantageous to learn how to connect to a database through code alone for certain scenarios, server-side code for example, where a UI is not required. It’s also useful for separating your code (and therefore logic) from the UI, which is often a beneficial design practice. Before we … Read more