import mx.events.CloseEvent;
import mx.controls.Alert;
//====================================系统关闭和托盘小图标处理=================

//系统小图标
private var dockImage:BitmapData;

//初始化Application里调用此方法,完成上面的第一步:
public function initApplication():void{
var loader:Loader=new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,prepareForSystray);//这里就是完成第一步的任务项,这个prepareForSystray就是对托盘的生在和菜单的控制
loader.load(new URLRequest(“1-5.gif”));//这里先要加载托盘图标的小图片
this.addEventListener(Event.CLOSING,closingApplication);//设置关闭体的事件
}

//关闭窗体的事件
public function closingApplication(event:Event):void{
event.preventDefault();//阻止默认的事件
Alert.yesLabel=”退出”;
Alert.noLabel=”最小化”;
Alert.show(“退出应用程序或者最小化窗口到系统小图标？”, “系统提示”, Alert.YES|Alert.NO|Alert.CANCEL, this, alertCloseHandler);//弹出自定义的选择框, 关于Alert的详细用法,参考官方文档或我前面的相关文章.
Alert.yesLabel=”是”;
Alert.noLabel=”否”;
}
//根据用户的选择来判断做什么,这里选择是就是关闭,选择否(Mini)就是最小化到托盘.
private function alertCloseHandler(event:CloseEvent):void{
if(event.detail==Alert.YES){
closeApp(event);
}else if(event.detail==Alert.NO){
dock();//最小化到托盘
}
}

//生成托盘
public function prepareForSystray(event:Event):void{
dockImage=event.target.content.bitmapData;
if(NativeApplication.supportsSystemTrayIcon){
setSystemTrayProperties();//设置托盘菜单的事件
SystemTrayIcon(NativeApplication.nativeApplication.icon).menu=createSystrayRootMenu();//生成托盘菜单
}
dock();
}

//生成托盘右键菜单
public function createSystrayRootMenu():NativeMenu{
var menu:NativeMenu = new NativeMenu();
var openNativeMenuItem:NativeMenuItem = new NativeMenuItem(“还原”);//生成OPEN菜单项
var exitNativeMenuItem:NativeMenuItem = new NativeMenuItem(“退出”);//同理
openNativeMenuItem.addEventListener(Event.SELECT, undock);
exitNativeMenuItem.addEventListener(Event.SELECT, closeApp);//添加EXIT菜单项事件
menu.addItem(openNativeMenuItem);
menu.addItem(new NativeMenuItem(“”,true));//separator
menu.addItem(exitNativeMenuItem);//将菜单项加入菜单

return menu;
}
//设置托盘图标的事件
private function setSystemTrayProperties():void{

SystemTrayIcon(NativeApplication.nativeApplication .icon).tooltip =”我的系统”;
SystemTrayIcon(NativeApplication.nativeApplication .icon).addEventListener(MouseEvent.CLICK, undock);
stage.nativeWindow.addEventListener(NativeWindowDisplayStateEvent.DISPLAY_STATE_CHANGING, nwMinimized);
}

//最小化窗体
private function nwMinimized(displayStateEvent:NativeWindowDisplayStateEvent):void {
if(displayStateEvent.afterDisplayState == NativeWindowDisplayState.MINIMIZED) {
displayStateEvent.preventDefault();//阻止系统默认的关闭窗体事件
dock();//将程序放入托盘
}
}

//将本地应用程序放到托盘
public function dock():void {
//stage.nativeWindow.visible = false; //设置本地程序窗体不可见
NativeApplication.nativeApplication.icon.bitmaps = [dockImage];//设置托盘的图标
}

//激活程序窗体
public function undock(evt:Event):void {
//stage.nativeWindow.visible = true;//设置本地程序窗体可见
stage.nativeWindow.orderToFront();//设置本地程序窗体到最前端
//NativeApplication.nativeApplication .icon.bitmaps = [];//将托盘图标清空
}

//关闭程序窗体
private function closeApp(evt:Event):void {
stage.nativeWindow.close();
}
//====================================系统关闭和托盘小图标处理=================