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AddressBook 应用程序如何呈现 Done 而不是 Esc 就像屏幕截图一样?
文档指出系统提供按钮取决于上下文。我如何定义该上下文?
找到了。您需要使用 NSPopoverTouchBarItem。将其设置为不显示关闭按钮,并自己添加一个。