從兒童SWF

Question

溝通，我在一個項目中，如果母公司是從影片剪輯中調用一個孩子從幼兒到父SWF通信掙扎。

父影片剪輯有這樣的行動層

var loader:Loader = new Loader(); 
var defaultSWF:URLRequest = new URLRequest("child.swf"); 
loader.load(defaultSWF); 

//I'm using an if statement to check if the movieclip is loaded to stage 

if (loader.parent != null) { 
loader.dispatchEvent(new Event(Event.ADDED_TO_STAGE)); 
trace("loader added to stage"); // trace returns positive 
loader.content.addEventListener("directions", childLoader_someSignalHandler); 
} 

//once a button in the child SWF is clicks the playhead will 
//change position on the parent.  
function childLoader_someSignalHandler(event:Event):void { 
    gotoAndStop("directions"); 
} 

孩子SWF已驗證碼發送到父：

centre_btn.addEventListener(MouseEvent.MOUSE_DOWN, childBtn_mouseDownHandler); 
// thanks to "Florent" for this code. 
function childBtn_mouseDownHandler(event:MouseEvent) { 
    dispatchEvent(new Event("directions")); 
} 

我返回我的錯誤是：

TypeError: Error #1009: Cannot access a property or method of a null object reference.

Answer 1

從孩子的MovieClip則需要重新引用到父MC。相信這可以通過類似的東西來完成：

MovieClip(root).dispatchEvent(new Event("directions"));