Touchscreen Windows 7 WPF

I have an app which I need to make accessible for Windows Touch. It is not a multi-touch application. I've looked at Microsoft's guidelines for touch applications which is interesting. There is one thing I am not clear on though, that is text input.

I would like a keyboard to appear when I click in a TextBox field. Is there a way to use the built-in on screen keyboard for this?

The first monitor I tested with was a Wacom. It is an older unit that uses a pen. It had some software that pulled up an on开发者_如何学编程 screen keyboard whenever I clicked in any text field (in any application). It was very handy. I thought this feature was using built-in Windows Tablet software because it didn't look like it came from a third party. A newer monitor I just purchased (Elo) does not have this feature though.

Answering my own question so it won't show up as unanswered any longer... From my comment above:

Looks like I've found the problem. The general purpose driver for the monitor wasn't installing it as a Tablet PC monitor. The Windows 7 only driver will provide a Tablet PC control panel settings. Now a keyboard shows up whenever I click in a TextBox field. The Windows XP compatible driver must have been using a legacy sub-system...