Hi huy,
I would take a look at the Reverse Geocoding example in the Ajax API
playground linked below:

http://code.google.com/apis/ajax/playground/?exp=maps#reverse_geocoder

You could basically adapt the code there to your use of the GALGWT Maps
library in your GWT application. The only catch is that rather than have a
standard ClickListener attached to your MapsWidget, you would have an
EventListener listening for an ONCONTEXTMENU event (i.e. a right click). On
receiving a right-click event, you could potentially reverse geocode the
location and place a marker where the user first clicked. I'm not completely
sure if this would work since I'm only passingly familiar with the Maps API
myself, but it's worth a shot.

Hope that helps,
-Sumit Chandel

On Tue, Jan 27, 2009 at 9:31 AM, huy <[email protected]> wrote:

>
> I cant figured out how to do this in GWT.  I want to right click on
> the map which will cause a context menu to open.  The context menu
> will only have one option to add a marker.  So if the user click on
> the add marker then a marker should be added at the right clicked
> location.  Any help is appreciated, thanks.
> >
>

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