data-write-converter

Arguments: grid-column

Returns the function that takes a value that has been entered interactively in a grid cell, and converts it into a value to be used programmatically by the application. The value returned by this function will be written to the grid-row's data-object by the grid-column's data-writer function.

The function should take a single argument, which is a value that the user has interactively entered into a cell of the grid-column that is using this function to convert user input.

A data-write-converter is typically used when the user can type a string into a grid cell, and the string needs to be converted to some other type of value for internal use. For example, in the employee grid example, the Department column's data-write-converter is make-department-symbol, which takes a department string like "Sleeping" that the user has typed into the grid cell, and converts into a keyword symbol like :sleeping, which is the internal representation of a department.

data-write-converter is a property of the grid-column and row-header-column classes.

Copyright (c) 1998-2001, Franz Inc. Berkeley, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.1 update # 1. This page was not revised.
Created 2001.12.15.