Re: gEDA: SPICE GUI

[Dale E Martin <dmartin@cliftonlabs.com>]

> [jg]If the linux source is GPL, and windows QT is not, does that mean QT
> has a windowing layer that is separately licensed? 

Trolltech holds copyright on QT so they can release the exact same source
to anyone they want to under different terms.  (They could sell you a
license for $1M and give it to me under GPL - that is their right as
copyright holder if I understand it correctly.)

Having said that, QT has to map into the windowing system of X and that of
Win32 using native APIs.  So there is most likely some amount of code that
is different between the two libraries - perhaps a lot of code.  What is
the same is the header files that you #include in your app.  But they don't
do you any good unless you get the .dll for Windows and have the right to
redistribute it.  (Or better yet, the source for it.)

> Can QT be compiled so its generated windows are handled by wxwindows or
> GTK?  Is that what someone meant when they said QT maps onto GTK, but is
> ugly that way?

I don't think anyone said that.  wxWindows does use GTK widgets - maybe
that's what you're thinking of?

Take care,
	Dale
-- 
Dale E. Martin, Clifton Labs, Inc.
Senior Computer Engineer
dmartin@cliftonlabs.com
http://www.cliftonlabs.com
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