File icon in title bar

[Andreas Höschler]

Hi all,

when opening a file (*.pdf, *.rtf,...) on MacOSX the title bar of the 
corresponding window does not show only the represented filename but 
also contains an icon representing the file. This icon can be used to 
drag the file to a terminal session, into an email or to a folder in 
Finder.app. This is extremely convenient and something I am missing in 
GNUstep. Is anybody working on this or has worked on this recently?

Thanks,

  Andreas