In order to use grid's DblClick event you would have to put code in Column's text DblClick event like this.parent.parent.DblClick(this)

Actually, this is not true in VFP 8.0. You can use code like this in the grid's Init to let the text boxes use the grid's dblClick()

*!* now make sure that the dblclick method of all the contained text boxes
*!* delegate to the grid's dblclick()
FOR EACH loColumn IN This.Columns 
  FOR EACH loControl IN loColumn.Controls
    IF LOWER( loControl.BaseClass ) = 'textbox' 
      BINDEVENT( loControl, 'dblClick', This, 'dblClick' )
    ENDIF
  ENDFOR
ENDFOR