Disable 77% scaling for Mac Catalyst apps. (Swift)

OverrideCatalystScaleFactor.swift

let overrideCatalystScaleFactor: Void = {
    guard let sceneViewClass = NSClassFromString("UINSSceneView") as? NSObject.Type else {
        return
    }
    if sceneViewClass.instancesRespond(to: NSSelectorFromString("scaleFactor")) {
        // old
        swizzleInstanceMethod(
            class: sceneViewClass,
            originalSelector: NSSelectorFromString("scaleFactor"),
            swizzledSelector: #selector(swizzle_scaleFactor)
        )
    } else {
        // macOS 11.3 Beta 3+
        swizzleInstanceMethod(
            class: sceneViewClass,
            originalSelector: NSSelectorFromString("sceneToSceneViewScaleFactor"),
            swizzledSelector: #selector(swizzle_scaleFactor)
        )
        swizzleInstanceMethod(
            class: sceneViewClass,
            originalSelector: NSSelectorFromString("fixedSceneToSceneViewScaleFactor"),
            swizzledSelector: #selector(swizzle_scaleFactor2)
        )
        swizzleInstanceMethod(
            class: NSClassFromString("UINSSceneContainerView"),
            originalSelector: NSSelectorFromString("sceneToSceneViewScaleForLayout"),
            swizzledSelector: #selector(swizzle_scaleFactor3)
        )
    }
}()

@objc private extension NSObject {
    func swizzle_scaleFactor() -> CGFloat { 1 }
    func swizzle_scaleFactor2() -> CGFloat { 1 }
    func swizzle_scaleFactor3() -> CGFloat { 1 }
}

I run the code in my AppDelegate.init()

Thanks, I used your code instead of the OC code I wrote according to your logic, and it works now. I have another question, how did you find these methods to hook? I am considering whether to use this solution, because the API may change when the system is updated, and I don't know if there is any risk of audit for hooking this?

Is any of this considered using a private API and risk rejectoin from the App Store?

Is any of this considered using a private API and risk rejection from the App Store?

Running fine for years. Apple don't cares.