How to apply "acceptsFirstMouse" for app build with SwiftUI?

Question

Let's imagine that I have an app for macOS (Catalina).

This app is not hidden. But another app is activated (front of all/ top most)

I want to catch click on the button/any other view (I'm using swiftUI, so everithing is a view) in case of click on my app.

How can I do this?

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UPD: how to apply "acceptsFirstMouse" for app build with SwiftUI?

Answer 1

You can create custom window from AppDelegate and use custom NSHostingView that accepts first click

@available(macOS 10.15, *)
public class FirstClickNSHostingView<Content>: NSHostingView<Content> where Content : View {
    public override var acceptsFirstResponder: Bool {
        true
    }
    
    public override func acceptsFirstMouse(for event: NSEvent?) -> Bool {
        true
    }
}