Flex 使彈出的視窗使用Canvas可以拖拽

一般來講，flex中彈出視窗可用titlewindow和panel來控制，直接即可執行拖拽動作。而有時我們希望彈出的視窗是自定義的canvas，並且也使canvas可以拖拽，那麼該如何做呢？方法就是給canvas加拖拽監聽，參見如下**：

父頁：//彈出視窗,alertwindow為乙個彈出的canvas

varmywin:alertwindow = alertwindow(popupmanager.createpopup(this, alertwindow,true));

popupmanager.centerpopup(mywin);

alertwindow.mxml:

<?xml version="1.0" encoding="utf-8"?>

importmx.managers.popupmanager;

importmx.controls.alert;

importflash.events.mouseevent;

importmx.containers.canvas;

importmx.managers.popupmanager;

importflash.display.displayobject;

importflash.events.event;

private vardownxy:point=newpoint();

private varupxy:point=newpoint();

public functiondragclick():void

public functionmouseeventfunc(evt:mouseevent):void

} ]]>

但此時問題又來了，拖動窗體任何乙個地方，窗體都被拖動了；假如我想通過滑鼠選中窗體中的某些文字，這時是無法選中的。解決方法是：不要將監聽監聽到整個窗體上，而應該在canvas加乙個頭，拖動窗體頭時才移動窗體。**如下：

alertwindow.mxml:

<?xml version="1.0" encoding="utf-8"?>

importmx.managers.popupmanager;

importmx.controls.alert;

importflash.events.mouseevent;

importmx.containers.canvas;

importmx.managers.popupmanager;

importflash.display.displayobject;

importflash.events.event;

private vardownxy:point=newpoint();

private varupxy:point=newpoint();

public functiondragclick():void

public functionmouseeventfunc(evt:mouseevent):void

} ]]>

試試，這時僅僅拖動labtitle區域才可以拖動。