Flex组件中PopUpManager在全局坐标中心弹出窗口

在Flex的某个组件中使用

 

var somePopupWindow : MyPopupWindow = 
        MyPopupWindow(PopUpManager.createPopUp(this, MyPopupWindow, false));
PopUpManager.centerPopUp(somePopupWindow); 

 

则弹出窗口将出现在此组件的局部坐标中心。若要在全局坐标中心弹出，则修改代码如下：

 

var somePopupWindow : MyPopupWindow = 
        MyPopupWindow(PopUpManager.createPopUp(this.root, MyPopupWindow, false));
PopUpManager.centerPopUp(somePopupWindow);