Design Time support issue

[Albinas]

Dear all,

I am trying to customize the textbox and I have added
some attributes to the property windows as design-time
setting. However, I don't know how to let user to choose
value when they set the attribute. I hope the effect can
be similar to that when user choose the border style in
the property window for a textbox control.

How can I do that?

Thanks for your help and attention.

Rgs,
John