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Tag: Beginner Tips

Xojo Educational Licenses for Teachers

ducators can download Xojo to a classroom of computers and activate the Xojo Educational license on a build machine. Whether your classroom is Windows, Mac or Linux, the Xojo IDE is cross-platform and free to download. Though you may only be teaching desktop development, your students can stretch their skills and use Xojo’s free IDE to develop web, mobile or Raspberry Pi apps.

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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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A Gem in Xojo 2021r2

The ability to specify “White Space” for the trim functions was introduced and largely ignored apart from the release notes. Using Trim (or LTrim or RTrim) will remove spaces from the beginning, end or both of your string. The new function allows you to specify what you want to trim.

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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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14 Days: A Beginner’s Gateway to Coding

It’s always a good time to learn something new! And maybe you have some free time on your hands now? We know our screen time is up this year, so let’s put that extra screen time to good use and learn a new skill – programming. If you are going to add programming to your skillset, it’s logical to begin with a language that makes it simple to learn the basics of programming. Let me show you a learning path you can follow over 14 days that is aimed at giving you a confident and capable to start to programming.

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Canvas: How to Create Custom UI Controls

Xojo includes a good amount of UI controls available from the Library for Desktop, Web, iOS and Raspberry Pi targets. These are the pieces that allow you to layout the user interface of your apps: properties, methods and events that, when combined, define the specific behavior of the project at hand.

Sometimes, subclassing the available controls is the answer to add specific behaviors you need. But what happen when none of the controls offer what you need, whether visually or functionally? The answer is the Canvas class (for Desktop projects), WebCanvas class (for Web projects) and iOSCanvas class for iPhone and iPad devices. But how do you create your own UI controls from scratch? Read on to learn…

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What’s important in a programming language?

I started learning how to code as a teenager. Back then there weren’t very many programming languages. I remember BASIC, Pascal, Fortran, COBOL, C and a handful of others that were highly specialized. Why so few? Because in the 1970’s, computers just couldn’t do very much compared to today. The available languages were sufficient for the limited tasks computers had been assigned to manage.

Over the last several decades, computer technology has exploded. The smartphone I carry around in my pocket is far more powerful than the fastest computers of my youth. As a teenager, I rarely encountered anything where a computer had played a part. Today the rare encounter would be with things where computers had played no part.  Computers handle so many tasks now that, as a natural consequence, there are thousands of programming languages with more appearing every year.

With so many languages, it can be difficult to choose one. What is important in a programming language?

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