Glenn,
HeaderHeight is not illegal.
Wouldn't this work ?

*Grid.Init
with this
.RowHeight = -1
.HeaderHeight = 0
.Height = Max(Sysmetric(8) + Sysmetric(10)*3, .RowHeight)
endwith

Cetin

>I needed my grid.headheight = 0 and my height = 20 both of which are "illegal" values. I reset them to smallest "legal" values and then change the grid.visible = .F.
>
>grid.init
>
>DODEFAULT()
>
>LOCAL lcError, llError
>lcError = ''
>llError = .F.
>
>lcError = ON('ERROR')
>
>ON ERROR llError = .T.
>
>WITH This
> .HeaderHeight = 0
> .Height = 20
> .Top = 10
> .Visible = .T.
>ENDWITH
>
>IF EMPTY(lcError)
> ON ERROR
>ELSE
> ON ERROR &lcError
>ENDIF
>
>
>This is not pretty but it works... additionally resizing the grid is not necessarily a clean appearance on the screen. I wonder if anyone has a sample of the WIN API call to get the value for the windows fonts and I could use that to build this functionality into the base class. Trapping this error and ignoring seems to cause no problems....so far
>
>Thanks,
>
>Mike