For #JustCode week 11, I’ve finished a project I’ve been working on for several months. This project is a simple app that you can use to write and run your own scripts using Xojo code on the Raspberry Pi. I call it Xojo Dojo.
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Although Xojo does not have a built-in method to format XML text, you can use XSLT to do this for you. XSLT stands for eXtensible Stylesheet Language. This XSLT can be used to format XML:
<?xml version="1.0" encoding="UTF-8"?> <xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="xml" indent="yes" /> <xsl:template match="/"> <xsl:copy-of select="/" /> </xsl:template> </xsl:transform>
To use this with Xojo, add a module to your project (name it XMLExtensions), add a String constant to the module (call it kXSLTFormat) and copy the above XSLT into the constant.
Comments closedFollow this tutorial to learn how to create active (clickable) words in a text of a TextArea control using the OOP Delegate design pattern, which allows you to dynamically change how your app will react when the user clicks on any of these active words. Best of all, this is cross-platform, so you can use it for macOS, Windows and Linux deployments!
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Naming your app may seem like the last step and the easiest part of the process, but it actually should involve some careful thought and consideration. A name needs to set the right tone for your app, should relate to it in some way, and should be searchable, meaning something that can be found easily in search engines. For example, you don’t want to name your app TravelTips – there are thousands of google searches that will come up before your app. You want a name you can own.
When we changed our name from Real Studio to Xojo, we wanted to make sure we could find a name that we could own. Not only was Xojo a pretty wide open space in terms of search, but it also stands for something that describes what Xojo is – X is for Cross-platform and “OJO” is for Object-Oriented.
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Are you ready to sell your app? Whether you have a web app, desktop or mobile app, it’s time to think about how to package and distribute that app, how get the word out and, of course, how to get paid for sales.
In this #longread blog post, we’ll walk you through preparing your app for distribution, offering your app on your website and in app marketplaces for sale, as well as first steps to marketing your app.
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It’s the first week of the Just Code challenge so I’m starting with something pretty simple. This app lets you choose a color using the system color picker and then shows you the color values in hexadecimal (useful for programming, HTML and CSS), RGB (red, green, blue), HSV (hue, saturation,value) and CMY (cyan, magenta, yellow).
Comments closedXojo is an Object Oriented Programming Language and, among other things, that means that it supports Methods Overloading. We have seen in other posts that some of these overloaded methods can be Class Constructors, but, there are others things you can do. For example, we can overload the operators. These are the methods in charge of adding two instances of the same class, subtracting, multiplying or dividing them. But we also have at our disposal another operator we can overload: Lookup. What advantages does this give us and how it does it work? Let’s explore it while building a Preferences class we can use in any of our projects.
Comments closedAfter seeing this conversation on the forums, I thought it would be helpful to run through why you can move some of your app’s DLLs but you cannot move others.
On Windows, the Visual Studio C Runtime DLLs can be in one of two locations on systems that do not already have them installed. All versions of Windows prior to Windows 10 would need these installed.
Comments closedIn many of our development projects, if not all, we are confronted with situations when we need to test our classes before the final deployment of a project. I’m not talking about Unit Testing here, though I highly recommend the excellent session on that topic from XDC 2018.
For example, it would not be desirable to send hundreds of emails to all the entries in a database simply to test one of the workflow steps or to verify that emails are being delivered as expected. It would be a lot simpler, and less disruptive to those using your app, to test using a few email addresses that are under your control.
So let’s establish a mechanism that allows us tell our apps when to run in a “simulated” mode vs. a “real” mode for all or some of the components that we need to test along the development cycle.
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These days everyone has a great idea for an app. Maybe you have an idea that would save you time at work, or maybe you’ve been thinking of an app that would automate something you do at home. Not sure where to start? One of your first steps is choosing a development tool that is right for you and for your project.
Here are five questions to guide your decision:
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