Why is Qtopia much faster?

Jim Morris ml at e4net.com
Tue Jul 22 23:04:18 CEST 2008

I just played with Qt Jambi the Trolltech Java UI SDK for Java. It looks good, but will it work 
under Qtopia? Or only under Qt/X11?

I have Jalimo loaded on the FR and of course non of the graphics libs they provide work because they 
are GTK/X11, so what does it take to use Java to write an app under Qtopia.

(For me if I can't do that it is a show stopper for me using Qtopia) I either need Java or Ruby to 
write to the screen. I presume some people will want python too.

There are Qt bindings for Ruby but I think they are Qt/X11 not Qtopia.

Any suggestions?


Lorn Potter wrote:
> Tilman Baumann wrote:
>> And not using x11 is probably a very sane step, if you can live  
>> without the portability factor. (That's porting other apps)
> There is no portability factor. Only which toolkit is available.
> As one of our engineers here said on our internal discussion (and goes 
> back to rasters comment):
> "One of the neat advantages of Qtopia on Qt for Embedded Linux is that 
> there is little penalty in converting back and forth between a QImage 
> and QPixmap so we have used this extensively which makes quite a few 
> things much easier and more possible than if things are based on X11 
> where these conversions are expensive and you then need to put a bit 
> more thought in to it. "

Jim Morris, http://blog.wolfman.com

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