Loading an Ink annotation on a canvas in windows 8

I am trying to load an ink annotation from the pdf on a canvas on click of a button so that I can edit that ink annotation.
I am doing it on windows 8.
Can you help me with the methods that are available in the windows library?

no avialble methods to get Ink path and set Ink path currently.

Thanks for the response ! Could you please let me know by when (tentative timeframe) these APIs would be supported in Windows? We want to use this library for a customer who needs app on Windows 8...