title-reader

Arguments: check-box-column-mixin

An accessor on a check-box column (an instance of a subclass of grid-column and check-box-column-mixin) of a grid-widget. Returns (or sets with setf) the name of a function which will be called in order to obtain the string to display in each check-box grid cell. A title-reader may also be nil rather than a function, in which case no string is displayed and the check-box gadget is centered horizontally in the grid cell. The default value is nil.

The function should take an arbitrary grid-row's data-object as its only argument, and return a string to display in that row. For example, here is the title-reader function for the "Full Time?" column of the employee grid example on the Examples tab of the Navigator dialog:

(defun full-time-p-title-reader (employee)
  ;; Show a string such as "Trent's full-time" 
  ;; beside the check-box.
  (format nil "~:(~a~)'s full-time" (name employee)))

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This page was not revised from the 9.0 page.
Created 2015.5.21.