Spread.Sheets Documentation
ColumnChanged type
GC.Spread.Sheets.Events Namespace : ColumnChanged type
Occurs when a change is made to a column or range of columns in this sheet that may require the column or range of columns to be repainted.
Example
//This example uses the ColumnChanged event.
activeSheet.bind(GC.Spread.Sheets.Events.ColumnChanged, function (e, info) {
    if(info.sheetArea === GC.Spread.Sheets.SheetArea.viewport){
        alert("Index (" + info.col + ")");
    }
});
Inheritance Hierarchy

Object
   GC.Spread.Sheets.Events.ColumnChanged

See Also

Reference

GC.Spread.Sheets.Events Namespace