Hi, Alex !

> As mentioned before, the goal is to use a specialized
> textbox in the the grid to show and accept time in "hh:mm" format
> and move it to / from file as a numeric value.
> The textbox class does the conversion well on the form
> but not in the grid. The function can be replicated
> as a form method.

I got your problem. You want to see the content of field as "hh:mm" and edit it in same format (but save internally in file as numeric value).
I found a simple solution, but does this forum allow to clip a little zip-file to message ? About 4K :) I sent the same file on your e-mail.

Sergey Rewa (holocrone@yandex.ru)
ICQ 351874731