BUGREPORT: Stack-overflow on a locked scroll.......

Hi Alex, I am getting a stack overflow message when trying to drag the vertical scrollbar, I try to lock vertical-scroll with the following code:
Am I doing something wrong??
Is there any other way to lock the scrolling ??
Thanks

lastTopPos = obj.getScrollTop();
obj.onScrollTopChanged = function(){ obj.setScrollTop(lastTopPos);}

Any Sugestion/Idea apreciated (even a middle-crazy one)... ;-)
Thanks

Carlos,

calling setScrollTop() will raise onScrollTopChanged event, so you have a loop. If you want to prevent changing scrollTop - you should do it inside onScrollTopChanging event - return nonzero code.

Example:

var obj = new AW.UI.Grid;
    obj.setSize(800, 250);
    obj.setCellText(function(i, j){return j + "-" + i});
    obj.setHeaderText("header");

    obj.setColumnCount(10);
    obj.setRowCount(1000);


    obj.onScrollTopChanging = function(top){
        if (top>100) return "not allowed";
    }

    obj.onScrollTopError = function(error){
        alert(error);
    }

    document.write(obj);

The same convention applies to all other properties - if you return nonzero code from the onSomeThingChanging(value) event - the assignment is cancelled, your error code is passed to the onSomeThingError(code) event, and onSomeThingChanged(value) event does not fire.

Thanks a lot!, (this sample is great!)
I didn't notice how can "Error" play to get "Changing-event" returned-params and avoid infinite-loops.
Thx