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Author: Javier Menendez

QuickTip: Using SF Symbols in macOS … revisited!

Earlier this year ago I wrote a post about using the SF Font symbols on macOS Picture.SystemImagein iOS apps. However that technique has some downsides. For one, the symbol glyphs are hardcoded, which means that it’s not possible to access the new symbols added to the SF Font by Apple. In addition, it isn’t possible to set the font weight and scale for the glyph. In this new post, I’ll show a more flexible way to work with these symbols on macOS 11+.

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Updated Tutorial: Active Words

This post was originally published in 2018 and has been updated to use Xojo API 2.0.

Follow this tutorial to create active, aka clickable, words in the text of a TextArea control in your Xojo projects. Learn to use the Object-oriented Delegate design pattern to dynamically change how your app reacts when the user clicks on those active words. Best of all, this project is cross-platform, so you can use it for macOS, Windows and Linux!

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Update: ipify for Xojo

There are plenty of times when your Xojo apps might need to know the public or external IP address is, and there are a lot of web sites or services that you can use with Xojo to find that. I found ipify to be easy to use

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Updated: Make Your Own Classes Iterables

In programming, iterators are the mechanisms that allow us to run through all the items of a collection without needing to know in advance how many of them compose that collection. To do this, we can use the commands For Each… Next in Xojo. What are the main differences when comparing For Each… Next with the conventional For… Next? See how the For Each… Next loop iterates every item associated with the object. It’s a more concise, stylish and Object-Oriented (OOP) way of doing things when compared with the classic For… Next loop.

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Web Tip: Blocking the Back Button

You are navigating Xojo web 2.0 apps and your use the browser’s back button to return to the previous page of the app. But rather than taking you to the previous page, you get a message that the app lost connection to the sever. This is even more common on a mobile device where we tend to use the back gesture to return to the previous page.

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New Additions to PDFDocument

Xojo 2021r2 brings more enhancements, new features and a bunch of bug fixes to the PDFDocument class. Among these, probably the most important is the arrival of PDFDocument for iOS. But you’ll also find new features like adding annotations and links to your PDFs, new PDF viewer options and the ability to jump to a specific page in a PDF.

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Tip: Setting the Background Color in WebDialogs

I was recently asked how to set the background color in a WebDialog. There are a few approaches you can take to accomplish this. The simplest one is to add a rectangle as a layer of the WebDialog and set a color to it. In this tutorial you’ll learn how to set the background color by accessing the style property of the object in the DOM model and setting it there. 

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