In the library, I have a movie clip - DraggableButton that has OnPress with
StartDrag with parameters and OnRelase with StopDrag. I have a slider with this
Draggable button and a bar to slide the button on. I also have two movie clips
Clip1 and Clip2.
In my main movie I have two instances MC1 and MC2 of Clip1 an Clip2. I have an
instance of the Slider.
I want to set the _alpha property of MC1 and MC2 depending on the location of
the button on the slider.
I think I need to save the location (_x) of the button on the slider in a
variable in the OnRelease even of DraggableButton and use this variable in the
SetProperty method.
I need to know in which event and which object's event should I use the
SetProperty method. Or if what I am thinking is not correct what do I need to
do?
I know though this is hard for a newbee like me, it is not very hard for you
Gurus. Please help!
Thank you very much.

how many draggable things are on your slider? is there just one draggable and
you want to set the _alpha of mc1 and mc2 simultaneously? ie, they'll always
have the same _alpha. or is there a draggable button who's position will
determine which movieclip's _alpha (mc1 or mc2) your slider will control?

There is only one draggable object on my slider. When the user drags that
button, I want alpha values of both MC1 and MC2 to be reset to different
values. Basically I am trying to fade one away and make the other more visible
depending on the direction.
Thank you.

The slider is horizontal. When it is at left most position, MC1 has alpha 100
and MC2 0. At the right most position MC1 has 0 and MC2 has 100. With motion
tween one fades into another. Can you give me the answer already?

slidebar.DraggableButton.onPress = function() { //where slidebar is the name
of your movieclip that contains DraggableButton
if (firstTime == undefined) {
firstTime = 0;
startx = this._x;
starty = this._y;
}
this.startDrag(0, startx, starty, startx+slidebar._width-this._width, starty);
alphaI = setInterval(alphaF, 100, startx, startx+slidebar._width-this._width);
};
slidebar.DraggableButton.onRelease = slidebar.slider.onReleaseOutside=function
() {
this.stopDrag();
clearInterval(alphaI);
};
function alphaF(l, r, x) {
mc1._alpha = (slidebar.DraggableButton._x-l)*100/(r-l);
mc2._alpha = 100-mc1._alpha;
}