>Thanks, Erik. That's so simple it hurts.
>
>Now a new problem; same grid.
>
>The underlying table is a cursor I generate from a form method. The data changes, I rebuild the cursor using the form method. I do
>
> thisform.grid1.recordsource = thisform.grid1.recordsource
>
>to force the grid to refresh. This works, but now my grid cells don't respond to the double-click event any more. Oddly, my column formatting is lost also.
>
>Clues?

Before you recreate the source, set the grid's recordsource to "". And then set it back afterwards.

Alternatively, don't destroy the cursor, but ZAP it, and append in new results.