flash 右击例子

package
{
 import flash.ui.ContextMenu;
 import flash.ui.ContextMenuItem;
 import flash.ui.ContextMenuBuiltInItems;
 import flash.events.ContextMenuEvent;
 import flash.events.ContextMenuEvent;
 import flash.display.Sprite;
 import flash.display.Shape;
 import flash.text.TextField;
 
 public class ContextMenuExample extends Sprite {
  private var myContextMenu:ContextMenu;
  private var menuLabel:String = "Reverse Colors";
  private var textLabel:String = "Right Click";
  private var redRectangle:Sprite;
  private var label:TextField;
  private var size:uint = 100;
  private var black:uint = 0x000000;
  private var red:uint = 0xFF0000;
  
  public function ContextMenuExample() {
   myContextMenu = new ContextMenu();
   removeDefaultItems();
   addCustomMenuItems();
   myContextMenu.addEventListener(ContextMenuEvent.MENU_SELECT, menuSelectHandler);
   
   addChildren();
   redRectangle.contextMenu = myContextMenu;
  }
  
  private function addChildren():void {
   redRectangle = new Sprite();
   redRectangle.graphics.beginFill(red);
   redRectangle.graphics.drawRect(0, 0, size, size);
   addChild(redRectangle);
   redRectangle.x = size;
   redRectangle.y = size;
   label = createLabel();
   redRectangle.addChild(label);
  }
  
  private function removeDefaultItems():void {
   myContextMenu.hideBuiltInItems();
   var defaultItems:ContextMenuBuiltInItems = myContextMenu.builtInItems;
   defaultItems.print = true;
  }
  
  private function addCustomMenuItems():void {
   var item:ContextMenuItem = new ContextMenuItem(menuLabel);
   myContextMenu.customItems.push(item);
   item.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, menuItemSelectHandler);
  }
  
  private function menuSelectHandler(event:ContextMenuEvent):void {
   trace("menuSelectHandler: " + event);
  }
  
  private function menuItemSelectHandler(event:ContextMenuEvent):void {
   trace("menuItemSelectHandler: " + event);
   var textColor:uint = (label.textColor == black) ? red : black;
   var bgColor:uint = (label.textColor == black) ? black : red;
   redRectangle.graphics.clear();
   redRectangle.graphics.beginFill(bgColor);
   redRectangle.graphics.drawRect(0, 0, size, size);
   label.textColor = textColor;
  }
  
  private function createLabel():TextField {
   var txtField:TextField = new TextField();
   txtField.text = textLabel;
   return txtField;
  }
 }
}