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Category: Raspberry Pi

Posts related to Raspberry Pi development.

Goodbye GTK+ 2, Hello GTK+ 3

With the release of Xojo 2017 Release 2 we have updated our Linux Desktop framework to use GTK+ 3 instead of GTK+ 2. For those not familiar with Linux, GTK+ is a User Interface (i.e. UI) toolkit, much like Cocoa is for macOS and Win32 controls (or WinForms.NET or WPF) is for Windows. GTK+ 2 has been supplying the user interface for Xojo Desktop apps for Linux since we first targeted Linux over a decade ago. It has since been deprecated in favor of GTK+ 3 for quite some time now and GTK+ 2 is typically not installed by default on most Linux distros these days, which makes deploying Xojo Desktop apps on Linux more painful. Unfortunately GTK+ 3 is not ABI compatible with GTK+ 2 so we could not migrate to using GTK+ 3 without completely ditching GTK+ 2.

Let’s take a closer look at what this means for your Linux apps:

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Auto-Launch Raspberry Pi Apps

For XDC 2016 I needed a way to demonstrate a Raspberry Pi app that used the GPIO and updated an LCD character display. But I didn’t really have access to a screen that I could use to show the desktop so that I could run the app. And I could not remotely connect to the Pi because I did not have a good way to get it on the wifi network in the first place.

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Programming the Raspberry Pi with Xojo Book

Just in time for Xojo 2017 Release 1 and its Remote Debugger for the Raspberry Pi, we released a new book “Programming the Raspberry Pi with Xojo”. The book contains 19 chapters that introduce you to the Raspberry Pi, takes you through setting it up, and covers learning about Xojo programming for the Pi. The book includes 8 step-by-step projects for creating a variety of Xojo apps for the Raspberry Pi, including: a text adventure, a music player, a game, Internet access, a web app, plus hardware projects.

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Raspberry Pi and Xojo: Configure for Remote Access

Xojo is a superb choice for developing and deploying apps for Raspberry Pi. After all, Xojo not only simplifies making the User Interface of your apps via drag and drop, it’s an object-oriented and event oriented programming language that builds native Linux apps based on the ARM processor architecture for the Raspberry Pi (among other platforms).

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Xojo Programming Language: 6 Fascinating Facts

Xojo is similar to VB, Java and C#

The Xojo programming language is fully object-oriented and uses an object model that is quite similar to VB, Java and C#. If you are used those languages at all, you’ll be right at home with Xojo.

Available since 1998, Xojo was one of the first languages to use Automatic Reference Counting (ARC), something that other languages such as Swift and Objective-C now use. Xojo is type-safe and fully object-oriented making it easy to learn and use, but it also has advanced features such as namespaces, extension methods, exception handling, introspection, delegates and more.

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Easy as Pi: GPIO updates

We are always keen to see apps and projects that Xojo developers have made for their Raspberry Pi 2 and Raspberry Pi 3 single-board computers. I am pleased to announce some updates to our GPIO project to make it even easier to use more types of hardware in your Raspberry Pi projects.

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