>>What's controlsource of this textbox? What type is it (character, numeric, e.t.c)? What other textbox properties are set.
>
>Character C 35
>
>ControlSource = V_MITEMS.cpartno
>Height = 21, etc.
>MaxLength = 35
>Name = txtcPartNo
>Comment, ToolTipText, StatusbarText
I think it's something in your code. I would check KeyPress() events and ON KEY LABEL commands.
--sb--