Questions on cross-platform development...

[thaths@xxxxxxxxxxxx (Sudhakar Chandrasekharan)]

Guys,

I have a whole bunch of questions on developing a product to be cross 
platform from ground up:

1. The product is going to have GUI portions to it.  I do not want to to 
be developing seperate GUIs for WinDOS (NT and 9x), Linux etc.  The only 
cross-platform toolkit I've heard of is Qt.  A developer license for 
Enterprise edition of Qt is not too expensive.  Are there other cross 
platform tooklits (preferably one that provides C bindings) that are 
licensed under a BSD-style license?  Are there commercial ones available?

2. Makefiles.  Is there a cross platform make?  I don't mind using 
CygWin make as long as it can interact with the M$ compiler.

3. Is it possible to write cross platform code without every using 
#ifdef PLATFORMs?

Thaths