>>>>1. The initial display of the grid doesn't show the InputMask, only after I click on the grid.
>>>>
>>>>2. The highlight doesn't properly work for this column. (I use HiglightStyle = 2)
>>>
>>>Works fine for me, I suspect you have changed some value which disables the default behavior.
>>
>>I have column's sparse set to .f. and I actually use my grid (subclass of the base grid class).
>
>I tried to change the sparse property, got the same result. How do you populate the grid? I mean, do you set each column in the property sheet, or in code?

For the second problem see Re: Highlight Problem in a grid Thread #1227011 Message #1227150

And I'm not sure why you don't see the first problem.

Anyway, looks like I have to use an extra field instead.