Use Grid MemberClass property.

with this, VFP fill the grid with the your personal column

* on a PRG

DEFINE CLASS myColumn AS Column

    ADD OBJECT Header AS Header
    ADD OBJECT Text   AS clText  && you can use VCX class also

ENDDEFINE

DEFINE CLASS clText AS TextBox

PROCEDURE RightClick
   RETURN this.Parent.Parent.RightClick
ENDPROC

ENDDEFINE

Attention, backup all the grids before change memberClass.