Before launching the window, just use the appropriate window level, and you’re done.
For example,
window.level = NSWindow.Level.popUpMenu
Or, if you want a higher level:
window.level = NSWindow.Level.screenSaver
You can see all the window levels on Apple Documentation page.
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When developing macOS applications with SwiftUI, you might need to create floating windows that stay on top of other windows. While modern macOS versions (15+) make this straightforward with the .windowLevel(.floating) modifier, supporting older versions requires a different approach. In this post, I’ll show you how to create floating windows that work across different macOS versions.
Let’s say you have a view named ContentView and your main App file looks like this:
You can override the flagsChanged() method of NSViewController and have your code like below to detect fn key press and release in macOS:
