Do you want to know when a user clicks inside the polygon?
As far as I am aware there is no automated way to do this
However, you can use this code.
I use this in my app to determine if a vehicle is within a defined zone made of 5 or more lat/lon coordinates. Point 1 is also Point 5 (first point and last point are same value). A simple box shows how to create this: 1----------2 | ........... | | ........... | clockwise (or counter...
I have used this code to monitor clicks in over 100 polygons and the performance is fine.