How to prevent NSToolbar overlapping NSViewController content?-CodePudding

I have a basic MacOS app with a toolbar and a view controller. I'm trying to perform some layout without constraints but when I try to position a subview in the top left corner it gets hidden under the toolbar.

Here's an example to demonstrate the problem (this just requires a default MacOS app with a storyboard). I've added -10 to the y position so the label peeks out.

class ViewController: NSViewController {

    let label = NSTextField()

    override func viewDidLoad() {
        super.viewDidLoad()

        view.addSubview(label)
        label.stringValue = "My Label"
    }

    override func viewDidLayout() {
        super.viewDidLayout()

        label.sizeToFit()
        label.frame = CGRect(x: 0,
                             y: view.bounds.maxY - 10,
                             width: label.bounds.width,
                             height: label.bounds.height)
    }
}

What am I doing wrong please? Is there a way to tell the toolbar to sit above the view controller's content rather that overlapping it?

Many thanks in advance!

CodePudding user response：

label.frame.y is the bottom of the label and its height > 10.

label.frame = CGRect(x: 0,
                     y: view.bounds.maxY - label.frame.height,
                     width: label.frame.width,
                     height: label.frame.height)