Great!!
Thank you very much.

>>It would be good to see the code in C#.
>
>Okey dokey .... here ya go.
>
>This example has been subclassed from MyTextBox subclass and will need additional tweaking if you want to sub-class from the System.Windows.Forms.TextBox. In particular notice that all the eventhandlers are overridden from the parent class. But other than that minor tweaking, this should work just fine.