// Use IE to see the console log text
var activeSheet = spread.getActiveSheet();

activeSheet.bind(GC.Spread.Sheets.Events.DragDropBlock, function (e, args) {
        console.log("From Column:" + args.fromCol);
        console.log("From Row:" + args.fromRow);
        console.log("To Column:" + args.toCol);
        console.log("To Row:" + args.toRow);
    });