(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 : (one-of/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.
(send a-column-control-event set-column column) → void? column : exact-nonnegative-integer?
Sets the column number (counting from 0) of the clicked column.