Windows Store Touchkeyboard, any solution?

I got a game that a like to port to Windows Store, that uses TextArea, but Unity3D does not have any support for Windows TouchKeyboard, right?
I was looking on forum, and found some guys that have the same questions. Anyone knows if there’s a solution or another alternative?
Thanks

I got a partial solution, just using a textbox xaml component. When focus over my textarea, i just focused over xaml component. for while, works well =)