使用小结（1）

1、屏幕显示：

全屏状态：

this.stage.displayState == "fullScreen"

最大化：

stage.nativeWindow.maximize();

最小化：同上使用

屏幕3显示判断：

stage.displayState = (stage.displayState != "fullScreen")?"fullScreen":"normal";

2、键盘事件：

private function EscKey(evt:KeyboardEvent):void{

if (evt.keyCode == Keyboard.F1 && evt.ctrlKey == true) //同时响应两个热键，这里为ctrl+F1

if (evt.keyCode == Keyboard.ESCAPE) //相应一个键盘事件，这里为ESC

}

3、控件与其父控件的大小

如下：

//this.stage.displayState == "fullScreen"； ----------------2@H_404_32@

var la:Label = new Label();

l@H_404_32@a.width=vb.width*0.9;@H_404_32@

vb.addChild(la);

this.stage.displayState == "fullScreen"； ----------------------1@H_404_32@

运行时，有可能当前显示的大小不对，这是Flex通常是normal下的格式，所以vb的width是在normal下大小，然后在全屏，此时，vb全屏了，可是vb的孩子la却还是当vb是normal下的width；应该修改为把1，放到2的位置，这样就ok了

4、Datagrid显示序号

<mx:DataGridColumn headerText="序号" labelFunction="GetOrder" width="50"/>

@H_404_32@private function GetOrder(item:Object,column:DataGridColumn):String{

@H_404_32@var list:ArrayCollection = listPersons.dataProvider as ArrayCollection;

@H_404_32@var index:int = list.getItemIndex(item);

@H_404_32@return String(index+1);

@H_404_32@}

</Script>

5、程序最小化隐藏显示在右下角，右键显示菜单，单击启动

private function init():void{

@H_404_32@var loader:Loader = new Loader();

@H_404_32@ @H_404_32@loader.contentLoaderInfo.addEventListener(Event.COMPLETE,prepareForSystray);

@H_404_32@ @H_404_32@loader.load(new URLRequest("assets/systray.png"));

}

private function windowClosing(evt:Event):void

@H_404_32@{

@H_404_32@evt.stopImmediatePropagation();

@H_404_32@evt.stopPropagation();

@H_404_32@evt.preventDefault();

@H_404_32@dock();

@H_404_32@}

private function closeApp(evt:Event):void

@H_404_32@{

@H_404_32@this.exit();

@H_404_32@}

@H_404_32@public function prepareForSystray(event:Event):void {

@H_404_32@

@H_404_32@//Retrieve the image being used as the systray icon @H_404_32@

@H_404_32@dockImage = event.target.content.bitmapData;

@H_404_32@

@H_404_32@//For windows systems we can set the systray props

@H_404_32@//(there's also an implementation for mac's,it's similar and you can find it on the net... ;) ) @H_404_32@

@H_404_32@if (NativeApplication.supportsSystemTrayIcon){

@H_404_32@setSystemTrayProperties();

@H_404_32@//Set some systray menu options,so that the user can right-click and access functionality

@H_404_32@//without needing to open the application

@H_404_32@SystemTrayIcon(NativeApplication.nativeApplication.icon).menu = createSystrayRootMenu(); @H_404_32@

@H_404_32@} @H_404_32@

@H_404_32@dock(); @H_404_32@

@H_404_32@} @H_404_32@

@H_404_32@

@H_404_32@private function createSystrayRootMenu():NativeMenu{

@H_404_32@//Add the menuitems with the corresponding actions

@H_404_32@var menu:NativeMenu = new NativeMenu();

@H_404_32@var openNativeMenuItem:NativeMenuItem = new NativeMenuItem("显示");

@H_404_32@var exitNativeMenuItem:NativeMenuItem = new NativeMenuItem("退出");

@H_404_32@

@H_404_32@//What should happen when the user clicks on something...

@H_404_32@openNativeMenuItem.addEventListener(Event.SELECT,undock);

@H_404_32@exitNativeMenuItem.addEventListener(Event.SELECT,closeApp);

@H_404_32@

@H_404_32@menu.addItem(openNativeMenuItem);

@H_404_32@menu.addItem(new NativeMenuItem("",true));//separator

@H_404_32@menu.addItem(exitNativeMenuItem);

@H_404_32@

@H_404_32@return menu;

@H_404_32@} @H_404_32@

@H_404_32@

@H_404_32@private function setSystemTrayProperties():void{

@H_404_32@//Text to show when hovering of the docked application icon

@H_404_32@SystemTrayIcon(NativeApplication.nativeApplication.icon).tooltip = "公告板程序";

@H_404_32@

@H_404_32@//We want to be able to open the application after it has been docked

@H_404_32@SystemTrayIcon(NativeApplication.nativeApplication.icon).addEventListener(MouseEvent.CLICK,undock);

@H_404_32@

@H_404_32@//Listen to the display state changing of the window,so that we can catch the minimize @H_404_32@

@H_404_32@ @H_404_32@stage.nativeWindow.addEventListener(NativeWindowDisplayStateEvent.DISPLAY_STATE_CHANGING,nwMinimized); //Catch the minimize event @H_404_32@ @H_404_32@

@H_404_32@}

@H_404_32@private function nwMinimized(displayStateEvent:NativeWindowDisplayStateEvent):void {

@H_404_32@if(displayStateEvent.afterDisplayState == NativeWindowDisplayState.MINIMIZED) {

@H_404_32@//Prevent the windowedapplication minimize action from happening and implement our own minimize

@H_404_32@//The reason the windowedapplication minimize action is caught,is that if active we're not able to

@H_404_32@//undock the application back neatly. The application doesn't become visible directly,but only after clicking

@H_404_32@//on the taskbars application link. (Not sure yet what happens exactly with standard minimize)

@H_404_32@displayStateEvent.preventDefault();

@H_404_32@

@H_404_32@//Dock (our own minimize)

@H_404_32@dock();

@H_404_32@}

@H_404_32@public function dock():void {

@H_404_32@//Hide the applcation

@H_404_32@stage.nativeWindow.visible = false;

@H_404_32@

@H_404_32@//Setting the bitmaps array will show the application icon in the systray

@H_404_32@NativeApplication.nativeApplication.icon.bitmaps = [dockImage];

@H_404_32@ModelManager.SendMsg(ModelManager.BOARDOVER);

@H_404_32@} @H_404_32@

@H_404_32@

@H_404_32@public function undock(evt:Event):void {

@H_404_32@//After setting the window to visible,make sure that the application is ordered to the front,

@H_404_32@//else we'll still need to click on the application on the taskbar to make it visible

@H_404_32@stage.nativeWindow.visible = true; @H_404_32@

@H_404_32@stage.nativeWindow.orderToFront();

@H_404_32@stage.nativeWindow.activate();

@H_404_32@//Clearing the bitmaps array also clears the applcation icon from the systray @H_404_32@

@H_404_32@NativeApplication.nativeApplication.icon.bitmaps = [];

@H_404_32@this.stage.nativeWindow.maximize();

@H_404_32@//this.stage.displayState = "fullScreen";

@H_404_32@}

6、Flex显示的CSS（自定义的效果）效果必须定义在WindowedApplication中，其他地方不会显示的。

一个CSS效果：

<mx:Style>

@H_404_32@Alert {

@H_404_32@ titleStyleName: "alertTitle";

@H_404_32@ messageStyleName: "alertMessage";

@H_404_32@ buttonStyleName: "alertButton";

@H_404_32@ dropShadowEnabled: true;

@H_404_32@ shadowDistance: 5;

@H_404_32@ shadowDirection: right;

@H_404_32@ cornerRadius: 5;

@H_404_32@ background-color: #E9FFEA;

@H_404_32@}

@H_404_32@

@H_404_32@.alertTitle {

@H_404_32@ letterSpacing: 0;

@H_404_32@ fontSize: 16;

@H_404_32@ color: red;

@H_404_32@}

@H_404_32@

@H_404_32@.alertMessage {

@H_404_32@ letterSpacing: 0;

@H_404_32@ fontSize: 16;

@H_404_32@ fontWeight: normal;

@H_404_32@ color: black;

@H_404_32@}

@H_404_32@

@H_404_32@.alertButton {

@H_404_32@ letterSpacing: 0;

@H_404_32@ fontSize: 16;

@H_404_32@ cornerRadius: 10;

@H_404_32@ fontWeight: normal;

@H_404_32@}

ToolTip {

fontSize: 14;

fontWeight: normal;

backgroundColor: #22DD00;

dropShadowEnabled: true;

}

.body {

@H_404_32@ font-size: 12px;

@H_404_32@ font-family: Arial,Helvetica,sans-serif;

@H_404_32@ @H_404_32@filter: style=1,startY=0,finishY=100,startX=100,finishX=100;

@H_404_32@ @H_404_32@background-color: #666666;

@H_404_32@}

</mx:Style>

Flex自带的名称前面不加“.”，如果想要引用自定义css，则前面加“.”，然后在相应属性的stylename=“body”

使用小结（1）

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