Question

我有多个使用Flash发布到FlashDevelop中的MovieClip符号（在我的示例中我只使用2）。每个都有3帧默认，悬停和点击，我用作按钮。

private var btnPlay:PlayButton, btnQuit:QuitButton;

btnPlay = new PlayButton();
btnQuit = new QuitButton();

btnPlay.addEventListener(MouseEvent.ROLL_OVER, onRollOverHandler);
btnPlay.addEventListener(MouseEvent.ROLL_OUT, onRollOutHandler);
btnPlay.addEventListener(MouseEvent.MOUSE_DOWN, onPressHandler);
btnPlay.addEventListener(MouseEvent.MOUSE_UP, onReleaseHandler);

btnPlay.buttonMode = true;
btnPlay.useHandCursor = true;

function onRollOverHandler(myEvent:MouseEvent):void {
    btnPlay.gotoAndStop(2);
}

function onRollOutHandler(myEvent:MouseEvent):void {
    btnPlay.gotoAndStop(1);
}

function onPressHandler(myEvent:MouseEvent):void {
    btnPlay.gotoAndStop(3);
}

function onReleaseHandler(myEvent:MouseEvent):void {
    btnPlay.gotoAndStop(2);
}

// Same code for btnQuit here, but replace btnPlay with btnQuit

有没有一种方法可以将按钮本身传递给MouseEvent函数，而不是向每个按钮添加新的EventListener，这些按钮实际上与我上面做的事情完全相同。（我意识到这可能很难，因为所有按钮都是他们自己的类）

btnPlay.addEventListener(MouseEvent.ROLL_OVER, onRollOverHandler(btnPlay));
btnPlay.addEventListener(MouseEvent.ROLL_OUT, onRollOutHandler(btnPlay));
btnPlay.addEventListener(MouseEvent.MOUSE_DOWN, onPressHandler(btnPlay));
btnPlay.addEventListener(MouseEvent.MOUSE_UP, onReleaseHandler(btnPlay));

function onRollOverHandler(myEvent:MouseEvent, inButton:MovieClip):void {
    inButton.gotoAndStop(2);
}

function onRollOutHandler(myEvent:MouseEvent, inButton:MovieClip):void {
    inButton.gotoAndStop(1);
}

function onPressHandler(myEvent:MouseEvent, inButton:MovieClip):void {
    inButton.gotoAndStop(3);
}

function onReleaseHandler(myEvent:MouseEvent, inButton:MovieClip):void {
    inButton.gotoAndStop(2);
}

Answer 1

也许我是误会，但是＆＃34; event.target＆＃34;为您提供已单击按钮的参考。因此，如果您想对点击的按钮执行某些操作，请写下：

myEvent.target.gotoAndStop(1);

或者有时您可能需要使用＆＃34; currentTarget＆＃34;。您仍然需要为每个函数创建侦听器，但可以使用一组处理程序。

Answer 2

简单回答：不会。你可能会遇到一些麻烦来覆盖MouseEvent类并允许它发送其他参数，但为什么在这种情况下呢？你似乎没有保存任何代码。

轻微更新：

这是对原始代码的可能有用的简化。它节省了几行代码并只使用了一个处理函数。显然，'trace'语句可以被各种'gotoAndStop（）'语句取代：

btnPlay.addEventListener(MouseEvent.ROLL_OVER, HandleAll);
btnPlay.addEventListener(MouseEvent.ROLL_OUT, HandleAll);
btnPlay.addEventListener(MouseEvent.MOUSE_DOWN, HandleAll);
btnPlay.addEventListener(MouseEvent.MOUSE_UP, HandleAll);

function HandleAll(e)
{
    if (e.type == "rollOver")  trace("rollover");
    if (e.type == "rollOut")   trace("rollout");
    if (e.type == "mouseDown") trace("mousedown");
    if (e.type == "mouseUp")   trace("mouseup");
}

我可以将按钮传递给自己的MouseEvent函数吗？

2 个答案: