Question

是否有＆＃34; MouseScroll＆＃34;或者＆＃34; MouseDrag＆＃34;在Actionscript中的事件，我找不到合适的东西。我有这个：

resultPumpVolCalcBoxQv.addEventListener(MouseEvent.CLICK, getPumpVolumenQv);
resultPumpVolCalcBoxQn.addEventListener(MouseEvent.CLICK, getPumpVolumenn);
resultPumpVolCalcBoxQvng.addEventListener(MouseEvent.CLICK, getPumpVolumenng);

function getPumpVolumenQv(e:MouseEvent):void {

     pumpeVolQv = Number(pumpeVolumenstromTextFieldqv.text);
     pumpeVolN  = Number(pumpeVolumenstromTextFieldn.text);
     pumpeVolNg = Number(pumpeVolumenstromTextFieldng.text);
     if(pumpeVolumenstromTextFieldng.text != null && pumpeVolumenstromTextFieldn.text != null) {        
        totalqv = (pumpeVolNg * pumpeVolN)/1000
        pumpeVolumenstromTextFieldqv.text = " " + totalqv;
     } else {
         //
     }   
}

目前，这适用于点击事件。如果我拖动类似滚动条的东西，我想让这个计算发生。

Answer 1

您必须结合使用MouseDown和MouseOut来创建拖动结果

obj.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
obj.addEventListener(MouseEvent.MOUSE_UP, mouseUp);

function mouseDown($e:MouseEvent):void{
MovieClip($e.currentTarget).startDrag();
}

function mouseUp($e:MouseEvent):void{
MovieClip($.currentTarget).stopDrag();
}

如果要将其约束到X或Y位置，请在startDrag（）函数中添加矩形框参数

Answer 2

您必须使用鼠标向上和鼠标按下事件才能实现此目的。但是，在不需要时，请小心添加然后删除事件侦听器。这样，您将确保正确删除事件侦听器，而不是多次添加，从而导致内存问题。

private var yourObject:MovieClip;

private function addDragListeners():void
{
    yourObject.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown, false, 0, true);
    yourObject.addEventListener(MouseEvent.MOUSE_DOWN, onMouseUp, false, 0, true);
}

private function removeDragListeners():void
{
    yourObject.removeEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
    yourObject.removeEventListener(MouseEvent.MOUSE_DOWN, onMouseUp);
}

protected function onMouseDown(e:MouseEvent):void
{
    yourObject.startDrag();
}

protected function onMouseUp(e:MouseEvent):void
{
    yourObject.stopDrag();
}

如果需要为拖动添加一些边界，可以查看startDrag（）方法。

Actionscript MouseScroll / MouseDrag

2 个答案: