macos - NSView 自动调整大小以适应内容 View

Question

CustomView *customView = [[CustomView alloc] init];
[self.window.contentView addSubview:customView];

当窗口调整大小时，如何使 customView.frame.size.height 始终等于 contentView.frame.size.height ，同时 customView.frame.size.width = 20; ?

Answer 1

Swift 版本，应用 autoresizingMask:

let customView = CustomView()
customView.autoresizingMask = [.width, .height]
self.window.contentView.addSubview(customView)

ref to options