设置自定义NSView的backgroundColor [英] Setting backgroundColor of custom NSView

问题描述

使用针对OSX的情节提要图板绘制到NSView的过程是什么?我已经在NSViewController中添加了一个NSView.然后，我添加了一些约束和出口.

What is the process of drawing to NSView using storyboards for osx? I have added a NSView to the NSViewController. Then, I added a few constraints and an outlet.

接下来，我添加了一些代码来更改颜色: 进口可可粉

Next, I added some code to change the color: import Cocoa

class ViewController: NSViewController {

    @IBOutlet var box: NSView!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func viewWillAppear() {
        box.layer?.backgroundColor = NSColor.blueColor().CGColor
        //box.layer?.setNeedsDisplay()
    }

    override var representedObject: AnyObject? {
        didSet {
        // Update the view, if already loaded.
        }
    } 
}

我想自定义绘图并更改NSView的颜色.我有 过去曾在iOS上执行过复杂的绘制，但完全陷在这里. 有人看到我在做什么错吗?

I would like to do custom drawing and changing colors of the NSView. I have performed sophisticated drawing on iOS in the past, but am totally stuck here. Does anyone see what I'm doing wrong?

推荐答案

正确的方法是

class ViewController: NSViewController {

@IBOutlet var box: NSView!

override func viewDidLoad() {
    super.viewDidLoad()
    self.view.wantsLayer = true

}

override func viewWillAppear() {
    box.layer?.backgroundColor = NSColor.blue.cgColor
    //box.layer?.setNeedsDisplay()
}

override var representedObject: AnyObject? {
    didSet {
    // Update the view, if already loaded.
    }
}}

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