Getting Background app into focus

[Kaustubh Atrawalkar <kaustubh atrawalkar celunite com>]

How to get a background running application into focus by another 
application? I mean there is a gtk application running on which another 
gtk application is running. Now i need to get that background 
application into focus from 3rd application like application switcher. I 
tried to used the gtk_window_present in that the background application 
jst pops up bt the focus still remains at the 3rd application. Is there 
any other API i can use?