On Mon, 30 Mar 2015, Alan Ianson wrote to mark lewis:

 ml>  AI> Yes, I think so. gtk3 seems to be showing itself too lately. 
 ml>  AI> Some apps, like transmission can use a gtk or qt (or even 
 ml>  AI> ncurses) interface. Would qt be better for what you are doing?
 ml> 
 ml> and here i've got apps that are using Qt5... someone's behind the 
 ml> curve a little bit ;) 

 AI> It's getting harder and harder to keep all this stuff straight! 

hahahaha! i must admit, though, that this app has /just/ started using Qt5...
its last release just a month or two ago was using Qt4 IIRC...

FWIW: it is a FOSS flight simulator... FlightGear if anyone is interested... be
warned, though, depending on what one wants to do and how they choose to
download it, it may be very large... i used the package for linux and it wasn't
too bad but then i messed up and tried the new alpha stuff in packages and
goofed my system so i went for the repo pulls and self compiling... the data
needed is quite extensive and it took me several days to pull the data repo
using torrents... once i had that in, i was able to proceed... then, nelieve it
or not, gutorious and googlecode both decided to shut down and the repos had to
move elsewhere... that lead to a much needed splitting of the default data into
two parts... the basic data with scenery and only one aircraft... all the other
scenery and aircraft were moved to another repo for addons... no one has to
deal with any of this unless they want to build on their own or work on
designing/refining aircraft, landscapes or structures on the landscapes... if
they do, that leads into a whole other world of 3D modeling or the lighter
flight dynamics modeling (aka FDM) needed to provide realist flying of the
craft...

)\/(ark