actionscript 3 ULscrollBar Issue!!!!

Question

Hi Guys.. I am trying to create a scrollBar for my MC which contains several mc horizontally. I wanted to apply ULscrollBar for my MC container so I can scroll for move small MC but I couldn't get it to work...I would appreciate if someone can help me about it. (there is no scroll head for me to drag...) Thanks...

   cont=new videoCont();
    cont.x=_x;
    cont.y=_y;
    addChild(cont);

    var mySb:UIScrollBar = new UIScrollBar(); 

    mySb.direction = "horizontal"; 
    mySb.setSize(cont.width, 25);  

    mySb.move(cont.x, cont.y+cont.height); 
    mySb.scrollTarget=cont; //the black container....
    addChild(mySb); 

Answer 1

Judging by the image you posted, the content isn't wide enough to be scrolled. In that case, the scrollbar will appear but without a visible thumb and won't respond to clicks.