Flash MX Sound Object Tutorial - Page 8

onClipEvent(load) {    
left=(_root.hslider._x) - 50;
 //The above allows the slider to slide 50 pixels to the left
    
 top=_root.base._y + 1.1; 
 // Replace or remove the 1.1 with whatever pixel number 
 //you need to fine tune placement.
    
 right=(_root.hslider._x) + 50;
 //The above allows the slider to slide 50 pixels to the right.
    
 bottom=_root.base._y + 1.1; 
 // The bottom should equal the "top" value to remove any 
 //vertical movement from the slider.
 
 _root.hslider._x=_root.base._width/2;
 //Loads the slider exactly in the middle of the base.
    
 volCalc=_root.hslider._x-50
 //Above establishes pixel range for calculating volume
                                                                                            
 //End of onClipEvent load

onClipEvent(enterFrame) {

 // This constantly sets the current x-axis position of
 //the slider to "sliderx" and then sets the volume to
 //the x-axis value - volCalc.
   
 sliderx=_root.hslider._x; 
 myMusicVolume=(sliderx-volCalc); 
 _root.myMusic.setVolume(myMusicVolume);
 _root.currentVolume=_root.myMusic.getVolume();
 //Displays volume in dynamic text box with the Var name of currentVolume..
 //End of onClipEvent enterFrame
}
onClipEvent(mouseDown) {
  startDrag(this, false, left , top , right, bottom)
}
 //
onClipEvent(mouseUp) {
  this.stopDrag();
}

In the above example, the slider movie clip can now be dragged from its center starting point to both ends of the base image. The variable "sliderx" is defined to equal the current x-axis point of your slider movie clip each time a frame is processed. The goal is to position your slider movie clip graphic so that its x-axis starts directly in the middle of the base. That way, you can calculate 50 pixels when the slider slides to the right and 50 pixels when it slides to the left.

The ActionScript for the above could also be placed in an event handler on a frame of any movie clip that loops such as:

this.onEnterFrame = function () { code here}