Developer's path to Windows/*NIX multi-platform?

[Stephen Mollett]

On Saturday 27 Mar 2004 20:20, forum at users.pc9.org wrote:
> ... I wish to write software that will still run on MS
> Windows while also running almost-natively on Linux, BSD, Solaris and
> hopefully even Mac OS. I don't mind compiling individually for each
> platform (i.e. I don't expect one binary to run on all). But it would be
> nice to share the same source so I don't have platform-specific forks.

You might want to investigate wxWidgets (formerly wxWindows) - 
www.wxwidgets.org - which seems to be used by a variety of major applications 
including AVG Antivirus and Forte Agent.

HTH
Stephen