I’m sure you’ve all seen the iOS Mail app, which displays the number of unread messages in a small red badge in the top right of the app icon. You can do this too with your Xojo app and the magic of the Declare command.
Comments closedCategory: Cross-Platform
Xojo is a popular way to create cross-platform apps for Windows, OS X, Linux, Raspberry Pi, web and iOS. I’m not surprised because Xojo makes creating software fast and fun! Xojo really is the best way to create cross-platform software.
Comments closedIn this episode of XojoTalk, Paul talks with Jim Meyer, who uses Xojo for NCAA stat tracking, home automation, workflow automation and much more.
Comments closedAnyone who has built an app in Xojo has used the Listbox method AddRow to create new rows. The iOSTable control in Xojo also has an AddRow method. However, unlike building a desktop app, AddRow is not always appropriate for iOS apps.
Comments closedMicrosoft refactored their core app runtimes in 2015. They have made what they call a “Universal C Runtime” which has been distributed via Windows Update to all supported versions of Windows that stay up-to-date (which is the default behavior for Windows Update).
Starting with Xojo 2016r1, the Xojo Windows framework has been updated to use the latest Microsoft tools. This allows Xojo to stay up to date and allows the Windows support to be improved in future releases. This means that Xojo itself now uses the new Universal Runtime and your built apps now require it.
Comments closedYour iOS apps uses Views to display information to the user and often your app will have multiple views to show different information. These views can be displayed in different ways.
Comments closedMicrosoft Office for Windows can be controlled using something called the VBA Office Object Model. You can use Xojo to communicate with this object model so that you can control Word, Excel and PowerPoint from your Xojo apps on Windows.
Comments closedHave you ever wondered how the magic behind the “mailto://” or other similar Uniform Resource Identifiers (URI) work? Whether from the web browser URL field or from Xojo via the ShowURL function, when URIs are executed the registered app opens showing the passed parameters (for example, in the Mail app for the ‘To’, ‘Subject’ and ‘Body’ fields).
Implementing this kind of behavior in your OS X apps is not rocket science! Follow these simple steps in order to register a custom URI from your app.
Comments closedObject Oriented Programming with Xojo, and in this case Event Oriented Programming as well, is simply wonderful. You create objects (Instances) from the defined classes that act as templates and just let them roll. From there, the interactions made by the user are those that determine how objects interact with each other via sending messages to each other (method calls), the access to properties and also the execution of events.
However, sometimes the combination can simply reach unstable situations by the very nature of our applications and here is where failures can arise in memory management. Fortunately, we can keep this under control with the help of the WeakRef class.
Comments closedXojo 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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