making icons active

[Lars Schylberg]

If I display a icon with d.icons how do I make this icon active so
that a user can click with the mouse and retrieve information about 
that particular icon or to write some additional text beside the 
icon.  I guess that you have to work with some extra image behind 
to keep track of all icons that are on the screen.  My question is 
if someone has done something simular and if you are willing to 
share some ideas or scripts.

Lars

Lars Schylberg                          Email: larss at fmi.kth.se  
Dept. of Geodesy and Photogrammetry 
Royal Institute of Technology (KTH)     Tel.   +46 8 790 86 33   
S-100 44  STOCKHOLM, SWEDEN             Fax.   +46 8 790 66 10