Nearly all CPUs used by your devices, from computers to tablets to phones, now contain multiple CPU cores. With a multi-core CPU, your computer can literally do multiple things at one time, which is called multiprocessing. And with a little careful planning, your Xojo apps can use multiprocessing for significant performance improvements in your apps.
Comments closedAuthor: Paul Lefebvre
As of July 23rd, Xojo is now available in the Ubuntu Software Center. Did you know you can also easily make your Xojo-created Linux apps available in the Ubuntu Software Center?
Comments closedIs it possible to put a Xojo-made application in the Mac App Store?
The answer is simple: Absolutely.
However, it can be a lot of work and you’ll have to pay heed to Apple’s rules regarding the Mac App Store and follow their very stringent requirements.
Comments closedMake it easier to launch Xojo web apps- add them to your iOS device’s home screen.
To add a web app to the home screen, you open it using Mobile Safari and then click the “Sharing” button and choose “Add to Home Screen”.
Perhaps you already knew, but with desktop apps it has always been considered bad form to directly access any part of your user interface from within a Thread. Alas, even though this was frowned upon, it generally worked in most of your desktop apps.
Starting with 2013r1, this no longer works with Xojo for Cocoa apps. If a Cocoa app tries to access the UI from a thread, a ThreadAccessingUIException is raised. But what exactly does “accessing the UI” mean? In the case of Cocoa, it means any access to a built-in property or method on any UI control or Window. You can access your own methods or properties added to control subclasses as long as they do not access the UI themselves.
Comments closedXojo can connect to a wide variety of databases, including: SQLite, PostgreSQL, MySQL, Oracle, Microsoft SQL Server and pretty much anything else using ODBC. A must-read for anyone building their first database application.
Comments closed