[Geotools-gt2-users] Help needed: how to place markers, how to make interactive selections?

[R.T.H.Chin <r.t...@tb...>]

Hi,

I am rather new to geotools but already managed to display a map with 
some shape files and raster images. Now I want to do some more things 
but I cannot find the answers on the website, so I went through the 
javadocs but now I am lost. These things seem kind of elementary to me, 
but I just don't know where to start:

- How can I place a marker at a latlon/xy position? Just like the ones 
on google maps. :) In the tutorial in "creating features" I found an 
example of creating a "road", but I guess that for a marker I need to 
create a point and then apply a symbolizer to it. How to do this? An 
example would be really helpful.

- How can I find the world coordinates of the mouse cursor when clicking 
on a map?

- Is it possible to select polygons (or other shapes) with the mouse?

I have more questions, but let's start with these ones.
Thanks in advance,
Roy