Under cut you can find a video demonstration and source code of the small Qt app which is able to launch preinstalled Nokia Maps application and display a landmark with custom description in it. Tested with Maps 3.06 and N8-00. Sample can be easely ported back to Symbian C++.
This sample uses AIW API and built in Qt SDK 1.1.3 with Qt 4.7.3.
Only basic capabilities required.
AIW API is an old approach of maps services usage. I would recommend to use Maps APIs everywhere where possible.
Map and Navigation AIW services header file (mnaiwservices.h) has been taken from PDK 3.0.4.
Same sample could be easely changed to perform NavigateTo and SelectFromMap actions.