Learning – Xojo Programming Blog

Xojo 2025r2.1: Publishing macOS Apps Under Tahoe

Published October 14, 2025 by Javier Menendez

macOS 26 is in the wild, and many Xojo users have likely updated their Macs to the latest version. While Xojo 2025r2.1 is compatible and can build apps that run under the latest macOS, the Publish feature depends on certain tools provided by Xcode. Unfortunately, one of these tools has undergone a significant change in the latest Xcode release, causing the Publish feature to no longer function correctly.

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How To Create a Custom Button Control in Xojo – Part 5: Adding Text Alignment

Published October 8, 2025 by Gabriel Ludosanu

In our previous installment, we successfully wired up keyboard focus to our custom DesktopCanvas subclass, making it fully accessible and user-friendly. Now, we’re going to tackle…

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Building Blocks for Beginners: Modules, Classes, Interfaces, and Delegates

Published September 24, 2025 by Gabriel Ludosanu

If terms like “Modules,” “Classes,” “Interfaces,”, “Delegates” feel new or abstract, keep this article as a map. I’ll explain what each one does, why they…

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RegEx Examples: 10 Practical Patterns You Can Copy and Paste

RegEx Examples: 10 Practical Patterns You Can Copy and Paste

Published September 18, 2025 by Gabriel Ludosanu

Looking for RegEx examples you can drop straight into your project? This practical cheat sheet focuses on the most searched tasks, such as find/replace, extracting…

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DesktopTextArea Without Soft Wrapping Lines on macOS

Published September 9, 2025 by Javier Menendez

When adding a DesktopTextArea to your macOS app, just drag it from the Library into a Window (or Container) in the layout editor of the Xojo IDE. It works out of the box with native macOS behavior. But what if you want to change that native behavior, like, for example, disabling soft wrapping? Keep reading to learn how.

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Implementing a Non-Blocking Image Processor with Xojo Threads

Published August 28, 2025 by Gabriel Ludosanu

Have you ever written an app that needs to do some heavy lifting, like processing a big batch of files? Maybe you click a button,…

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4 Setting the Badge Color for Tabs on iOS

Published August 20, 2025 by Javier Menendez

This is the final article in our series on customizing the appearance of the NavigationBar and TabBar. In this post, we’ll go a step further and show how to change the default color of the tab badge which is red by default.

As you might expect, we’ll need a few more Declares to accomplish this. Continue reading to learn how!

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3 Coloring the Tab Bar on iOS

Published August 19, 2025 by Javier Menendez

In the first two blog posts, we saw how important it is to customize the NavigationBar when theming your iOS app. However, that’s only part of the equation, especially if your app also uses a TabBar. In that case, you’ll likely want to customize not only the background color of the TabBar, but also the text color of the selected tab and the color used for the unselected tabs.

Continue reading to learn how to do all of this thanks to the powerful flexibility of Declares!

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2 Coloring the Navigation Bar Text on iOS

Published August 18, 2025 by Javier Menendez

In a previous blog post, we covered how to set the color of the NavigationBar on a MobileScreen in iOS projects. However, if you’re customizing the Navigation Bar’s background, you’ll likely want control over the title text color and the color of any buttons added to it as well.

Continue reading to learn how to customize those elements too.

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1 Coloring Your iOS App Navigation Bar

Published August 11, 2025 by Javier Menendez

This is the first of a series of 4 posts about customizing the Navigation and Tab Bars. One of the best ways to give your iOS app a custom look is by theming the Navigation Bar. While it’s possible to do this using a ContainerControl or a Rectangle with carefully applied constraints, there’s a better and more direct approach—using Declares.

Keep reading to learn how to style your Navigation Bar.

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Category: Learning