在flash內捲動影片片段

flash.geom.Rectangle

若要對某個影片片段產生捲動軸，需要import此一類別，
關於此一類別的詳細介紹可見
http://livedocs.adobe.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00002618.html

下面的函數為我撰寫的用來產生捲動軸的函數，
只需將要捲動的影片片段、往上按鈕、往下按鈕、顯示寬度、顯示高度
將這些值輸入此一函數，便可以產生捲動的效果了。

import flash.geom.Rectangle;
var rollHeight:Number = 80;
//產生捲動軸函數(要捲動的影片片段、往下按鈕、往上按鈕、顯示寬度、顯示高度)
function createUpDownDrag(tmpObj:MovieClip, up_btn:MovieClip, down_btn:MovieClip, P_width:Number, P_height:Number)
{
	var window:Rectangle = new Rectangle(0, 0, P_width, P_height);
	tmpObj.scrollRect = window;
	var max_height:Number = tmpObj._height;
	var control = tmpObj.scrollRect;
	control.y = 0;
	up_btn.onPress = function()
	{
		control.y += rollHeight;
		if (control.y &gt; max_height - P_height)
		{
			control.y = max_height - P_height;
		}
		tmpObj.scrollRect = control;
	};
	down_btn.onPress = function()
	{
		control.y -= rollHeight;
		if (control.y &lt; 0)
		{
			control.y = 0;
		}
		tmpObj.scrollRect = control;
	};
}

import flash.geom.Rectangle;

var rollHeight:Number = 80;

//產生捲動軸函數(要捲動的影片片段、往下按鈕、往上按鈕、顯示寬度、顯示高度)

function createUpDownDrag(tmpObj:MovieClip, up_btn:MovieClip, down_btn:MovieClip, P_width:Number, P_height:Number)

{

var window:Rectangle = new Rectangle(0, 0, P_width, P_height);

tmpObj.scrollRect = window;

var max_height:Number = tmpObj._height;

var control = tmpObj.scrollRect;

control.y = 0;

up_btn.onPress = function()

{

control.y += rollHeight;

if (control.y > max_height - P_height)

{

control.y = max_height - P_height;

}

tmpObj.scrollRect = control;

};

down_btn.onPress = function()

{

control.y -= rollHeight;

if (control.y < 0)

{

control.y = 0;

}

tmpObj.scrollRect = control;

};

}

此函數要傳入的參入包括: “要捲動的影片片段”、”往上按鈕”、”往下按鈕”、”顯示寬度”、”顯示高度”
若將影片片段傳進此參數，將可用上下按鈕來上下捲動此一影片片段
而rollHeight則是按鈕按下一次捲動的高度
若還有疑問或是有任何Bug可回覆給我!我會再做修改