Touch input should be in fixed co-ordinate route/path in windows phone

[atanu055]

I've just began windows phone 7 for couple of days. trying a project. But can't find a solution.

I want to hold the finger to a start point and drag to an end point.these points are predefined by me. and this holding route should be a fixed path, not necessary a straight line, can be a circle or any shape.

For example, these days' android smartphone, the way we unlock the key lock.

I tried this one
Jeff Prosise's Blog : Building Touch Interfaces for Windows Phones, Part 4

Used the gesture toolkit.
But it's not working for me, the way I want.


How can it be implemented! any tutorial or example? please help.......