I am trying to add handwriting recognition to my application, I see that with Windows XP the end user needs to have the Tablet PC edition for the recognition to work.
However it is a little ambiguous at to the state of Windows 7 users.
When I consider the deployment of my application, do I need to test for the Tablet PC edition of the operating system or am I just allowed to use it?
It seems to be available in most editions of Windows Vista and 7. There is no separate Tablet PC edition any more.
From the Wikipedia Article on Tablet PCs:
With the succession of Windows Vista, the Tablet PC functionality no longer required a separate edition. Tablet PC support is built into all editions of Windows Vista with the exception of Home Basic and Starter editions. This extends the handwriting recognition, ink collection,[4] and additional input methods to any computer running Vista even if the input device is an external digitizer, a touch screen, or even a regular mouse. Vista also supports Multi-Touch functions and gestures (originally developed for the Microsoft Surface version of Vista) and is now usable by the public with the release of Multi-Touch tablets.
Windows Vista also significantly improved handwriting recognition functionality with the introduction a handwriting recognition personalization tool as well as an automatic handwriting learning tool.