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| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version

## range-reader

Arguments: grid-column

Returns (or sets with setf) a function to return the list of values for a cell that is in a `combo-box-column-mixin` `grid-column`. This function should accept one argument, which is the data-object of a `grid-row`. A range-reader may also be `nil` rather than a function, in which case no choices are displayed by the combo-box. The default value is `nil`.

For example, if the grid column that a range-reader is on is displaying the department of each employee that is displayed in a grid row, then the range-reader function might take an employee as its argument and return a list of the departments into which that employee could be moved. The employee grid example can be found on the Examples tab of the Navigator.

See the `grid-widget` class for an overview of writing grid-widget code.

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This page was not revised from the 8.2 page.
Created 2012.5.30.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version