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dhtmlxgrid
Event Handling

## onColumnHidden Event

Required library edition:

This event occurs after a column was hidden ( setColumnHidden method was called ).

              grid.attachEvent("onColumnHidden", function(index,state){
                        //any custom logic here
              });

Parameters:

- index - index of columns;
- state - {bool} if true - column is hidden, otherwise column is shown.