File Selector Filter, directory only

[Peter Robinson t-online de (Peter Robinson)]

Hi GTKlers,

thanks to help from many people on this list I have nearly finished my very first GTK app...as opposed to 
Swing, GTK is something I like more the more I use it...there is one more question I have not been able to 
answer using the online docs. I would like to open a file selector dialog such that a user can select or 
create a directory, rather than a file. Is there a way of doing this with GTK?

Thanks a lot, Peter