Flash Component Unable to set scrollRect

Question

I have a component and I'm attempting to set a scrollRect from within the global application code.

When I define the function as

public function foo():void{ obj.scrollRect = new Rectangle(blah,blah,blah,blah); }

the scrollRect does not get applied, nor does the viewport change.

However when I set the event within that component, remove public from the function definition, it acts as expected.

I need to programmatically scroll the contents of an

This function works as expected with a gradual scroll:

function mouseClickNext(event:MouseEvent):void{
            var sum:Number = bookmark_navigator.width -x_holder;
            if( sum<= 310)return;
            if(bookmark_navigator.width >= 310){

                var obj:Rectangle = bookmark_navigator.scrollRect;
                var setWidth:Number = bookmark_navigator.numElements * 28;

                if(x_holder + 40 >= bookmark_navigator.width)
                    x_holder=bookmark_navigator.width;
                else x_holder += 40;
                bookmark_navigator.scrollRect = new Rectangle(x_holder,0,bookmark_navigator.width,30);
            }
        }

However, this function does not:

var np:Number = 0;
        public function check():void{
            return;
            np= 0;
            while(true){
                try{

                    var sum:Number = bookmark_navigator.width -np;
                    if( sum<= 310)break;
                    np += 40;
                }catch(e:Error){break;}
            }
            bookmark_navigator.scrollRect = new Rectangle(np,0,bookmark_navigator.width,30);
        }

The return was added in as a means of testing.

Answer 1

If you are using Flex, you probably should avoid using the scrollRect property, since Flex has it's own implementation of scrolling behavior.

Typically, you wrap your <s:HGgroup> in a <s:Scroller>. To adjust the scroll position, you can then change the horizontalScrollPosition or verticalScrollPosition properties of the Scroller.