代码：
package
{
import com.duowan.util.DrawUtil;
import flash.display.DisplayObject;
import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.text.TextField;
/**
* ...
* @author hacker47
*/
public class SelectMain extends Sprite
{
private var p0:Point = new Point();
private var drawWidth:Number;
private var drawHeight:Number;
public function SelectMain()
{
stage.addEventListener(MouseEvent.MOUSE_DOWN, onDown);
}
private function onDown(e:MouseEvent):void {
p0.x=mouseX;
p0.y= mouseY;
stage.addEventListener(MouseEvent.MOUSE_MOVE, onMove);
stage.addEventListener(MouseEvent.MOUSE_UP, onUp);
}
private function onMove(e:MouseEvent):void {
drawWidth = mouseX - p0.x;
drawHeight = mouseY -p0.y;
graphics.clear();
DrawUtil.drawRect(graphics, p0, drawWidth, drawHeight);
}
private function onUp(e:MouseEvent):void {
stage.removeEventListener(MouseEvent.MOUSE_MOVE, onMove);
checkRange();
}
private function checkRange():void {
if (drawWidth < 0) {
drawWidth = -drawWidth;
p0.x -= drawWidth;
}
if (drawHeight < 0) {
drawHeight = -drawHeight;
p0.y -= drawHeight;
}
for (var i:int = 0; i < this.numChildren; i++ ) {
var d:DisplayObject = getChildAt(i);
var rect:Rectangle = d.getRect(this);
if (rect.x > p0.x && rect.x < (p0.x + drawWidth)) {
if (rect.y > p0.y && rect.y < (p0.y + drawHeight)) {
selectedDraw(rect);
}
}
}
}
private function selectedDraw(rect:Rectangle):void {
graphics.lineStyle(2, 0x336699);
graphics.drawRect(rect.x, rect.y, rect.width, rect.height);
}
}
}