>>>How can I lock down the row height and column width properties so users cannot resize them during runtime ?
>>
>>Grid.AllowRowSizing = .F.
>>Grid.Column.Resizable = .F.
>
>AllowRowSizing must have been added after VFP 3.0; I cannot find it. I did find Column.Resizable -- thanks.

Didn't know it was for VFP3.

In that case, what you may want to try is to dynamically create a shape on the form that is transparent and align it over the top/left of the grid, just large enough to cover the row divider line that allows a user to resize it.

ex: In the Grid Init()

Thisform.AddObject( "GridCover", "shape" )
With Thisform.GridCover
  .top  = This.Top
  .left = This.Left
  .Height = This.Height
  .Width = 20  
  .BackStyle = 0
  .Visible = .T.
  .ZOrder(0)
  && or some other number, based on if the delete mark,
  && or record mark positions are visible... This should 
  && just go over 1 or 2 pixels within the first column.
EndWith

HTH