如何在OSX Swift中使窗口透明? [英] How to make window transparent in osx swift?

问题描述

我在Xcode中创建了一个空项目.

I have a empty created project in Xcode.

当我按下运行按钮时，它会显示一个窗口.如何更改其外观，例如窗口的透明度等.

When I press run button, it displays a window. How can I change it's appearance like transparency of window etc.

我进行了很多搜索，但是每个人都使用window变量进行更改，例如在这里，但是我该如何创建NSWindow实例?

I've searched a lot but everyone uses a window variable to change like here but how can I create NSWindow instance?

我是Mac应用程序开发的新手.有人可以写出详细的答案吗?

I'm new to mac app development. So can anyone write a detailed answer?

谢谢！

推荐答案

您可以按如下方式获取应用程序窗口的实例:

You can get an instance of your application window as follow:

guard let window = NSApplication.shared().windows.first else { return }
window.isOpaque = false
window.backgroundColor = .clear

从NSApp获取窗口(共享应用程序实例的全局常量):

Get your window from NSApp (global constant for the shared app instance):

guard let window = NSApp.windows.first else { return }

或覆盖viewWillAppear或viewDidAppear并访问视图的window属性.

Or override viewWillAppear or viewDidAppear and access your view's window property.

override func viewWillAppear() {
    super.viewWillAppear()
    view.window?.isOpaque = false
    view.window?.backgroundColor = .clear
}

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