ممنونم به این روش حل شد
// Register mouse event functions
pic.addEventListener(MouseEvent.MOUSE_DOWN, ZZ);
pic.addEventListener(MouseEvent.MOUSE_UP, ZZ1);

// Define a mouse down handler (user is dragging)
function ZZ(evt:MouseEvent):void {
var object = evt.target;
// we should limit dragging to the area inside the canvas
object.startDrag();
}

function ZZ1(evt:MouseEvent):void {
var obj = evt.target;
obj.stopDrag();
}