Hi David,

Thanks for sending the form to me. Well... Congratulations!
I was able to nail the problem down. The problem with VFP is that you can define ControlSources of a Grid's Column which call a method with parameters but the limitation is that the parameter should not be a numeric value.

When you pass a numeric value as a parameter, VFP assumes it to be an array for e.g. "thisform.S2Ms[10]". The solution is a rather simple one, pass an empty string as a parameter along with the duration and you are done.

This was an issue either on the UT or Compuserve when VFP 3 was out, and we had spent a lot of time on it then. I realized when I saw your code.


>I've got a UDF called S2MS() sitting in a procedure file which converts seconds (numeric) to a formatted mm:ss string.
>I had a grid in a form and one of the columns had S2MS(Duration) as the control source. It worked just fine.
>I moved this grid to a new form, and now the grid comes up blank (but with grid lines and headings). If I remove the S2MS() function from the column and just put in "Duration" it works normally, but of course my seconds are unformatted.
>Any ideas as to what's happened?
>
>I've had this sort of thing several times with different "calculated" columns and I'd love to know what's going on.