C++ Builder xe2 & Google Maps api

Can some one point me in the right direction.

I would like to create a C++ application that uses google maps.

I need to be able to do the following

1. Add markers.
2. Calculate distance between markers.
3. Work out long/lat from address.
4. Get address from long/lat.
5. Get address from mouse click on map.

I've seen some components that do this but they are abit pricy.

Ended up using GMLib found at the following site

https://code.google.com/p/dcef3/

so far it has done everything i have needed.