A column-control-event% object contains information about a event on an list-box% column header. Except on Windows, the 'clickable-headers style must be specified when creating a list-box% for column events to be generated.
(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.