(new column-control-event% [column column] [event-type event-type] [ [time-stamp time-stamp]]) → (is-a?/c column-control-event%) column : exact-nonnegative-integer? event-type : (or/c 'list-box-column) time-stamp : exact-integer? = 0
The column argument indicates the column that was clicked.
Returns the column number (counting from 0) of the clicked column.
Sets the column number (counting from 0) of the clicked column.