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Category: General

Top-Rounded Rectangle

On the forum a user asked if there was a way to create a rectangle with only the top left and top right corners being rounded. Xojo’s built-in RoundRectangle control draws with all four corners rounded, so that was not an option.

One solution is to use a GraphicsPath to draw exactly what you want. With a GraphicsPath you can use the AddArc() method to add rounded corners and then draw the lines for the rest of the rectangle.

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Singletons and the Web

The singleton design pattern has its place in the desktop environment where there will be only one user running the application, and when that user quits the app the singleton is destroyed. This doesn’t fit the requirements of a multi-user environment such as the web where many users will be accessing the application at once. I recently came across this issue when porting a desktop app to the web which required me to design a singleton class that is session sensitive. Here’s a walk through of how I achieved my goal. Please note that scopes are particularly important when creating this class.

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Xojo License FAQ

Xojo is an easy-to-use Integrated Development Environment (IDE) and programming language that allows you to create and deploy all kinds of native apps and solutions on Desktop (Windows, macOS, Linux), Web, iOS and Raspberry Pi with Android on the horizon.

We often get questions from newcomers about how Xojo licenses work and what license options available. Read on to learn what Xojo license is right for your needs. At the end, if you still aren’t sure what license is right for you, you canĀ get in touch with us and we’ll help you get what you need.

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