So now getting the Lat/Long of a mouse click is a relatively straightforward process.
We tell the map we want to add a click UI event listener and pass in an event handler which handles a GMapMouseEvent event object. From that object the latitude and longitude of the event can be determined.
Currently the Lat/Long are the only properties available on the GMapMouseEvent object, but additional properties will be added as demand warrants.
Below is a screenshot of one of the example applications included with the GMapsFX project that illustrates how to capture the lat/long of a mouse click.