resize all columns to best fit the header and the contents

add a line item comparing the header text with the object field names

make the LVI subitem count match the column count

get the index of a column name

returns a tuple of column header name, and the row value for this LVI

Initialise the columns to be those in a list of strings

init the column headers from a class' public variables

Select all the items in the list view

swap two rows given by their index