NSAlert的使用

概述

NSAlert是macOS应用上的一种提示或者警告弹窗，它允许你指定提示文本，按钮标题以及自定义图标等等。基本的显示样式如下：

具体实现

//创建一个alert实例
let alert = NSAlert()

// set Message
alert.messageText = "are you sure you want to remove your marked notes?"; 

// set informative text
alert.informativeText = "Marked ontes will also be removed on other devices signed into your account".

//set accessory View
alert.accessory = NSView()

//help
alert.showsHelp = true;
alert.delegete = self;
func alertShowHelp(_ alert:NSAlert) ->Bool{}

//suppression checkbox
alert.showsSuppressionButton = true;
alert.suppressionButton = cutomBtn;

//response button
alert.addButton(withTitle:"Cancel");

//set type
alert.alertStyle = NSAlert.Style.warning

//弹出弹框
func beginSheetModal(for sheetWindow: NSWindow, completionHandler handler: ((NSApplication.ModalResponse) -> Void)? = nil)

复制代码

弹出弹框还有一种方式 open func runModal() -> NSApplication.ModalResponse
这种方式是弹出模态窗口，也就是必须先关闭当前弹框之后，才能对其他窗口进行操作。