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Lorn Potter

build systems

Published Monday March 26th, 2007 | 5 Comments on build systems
Posted in Greenphone, KDE, Qt, Qtopia

I have been working with embedded distribution build systems for some years now, since the Sharp Zaurus 5000d first got released and have thought a lot about this subject. I have tried many build systems, some commercial, and all have short comings. A build system should require a few things: 1) It has got to […]

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4.3.0 beta binaries

Published Monday March 26th, 2007 | 5 Comments on 4.3.0 beta binaries
Posted in News, Qt

Open Source Open Source binaries are now available at There have been a couple of reports of compilation failing with MinGW. You can solve this in two ways – Either upgrade your Win32 API headers to atleast 3.7 OR use the binary package which comes with a fix for the compilation. Note that you […]

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Qt 4.3.0 beta released

Published Wednesday March 21st, 2007 | 14 Comments on Qt 4.3.0 beta released
Posted in KDE, News, Qt, Qtopia

We released Qt and Qtopia Core 4.3.0 beta source packages today. You can download them here. Binaries will be available by this friday. Note that the Open Source beta packages are now available under GPL. Space being limited, a lot of non-buzzword-compliant features got unceremoniously dropped from the What’s new page. So here is a […]

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Resolution independent UIs

Published Friday March 16th, 2007 | 4 Comments on Resolution independent UIs
Posted in Graphics View, Labs, Qt

After my last Graphics View blog about Widgets on the Canvas, people have been contacting me and telling how much they really really want true widgets on the canvas, with full transformations support. Resolution independent user interfaces, now that’s something very many drool over, especially the idea of not having to worry about pixel sizes […]

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Lorn Potter

Brisbane office

Published Friday March 16th, 2007 | 2 Comments on Brisbane office
Posted in KDE, News, Qt, Qtopia

It’s now “official”. The new Brisbane, Australia (pronounced “BRIZ-buhn”) office of Trolltech is now open! Story here We actually moved in December, but had a media bruhaha the other day. I took some photos of the office Trolltech office photos Of course, the office is huge, and not all the open places are covered. You […]

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Published Tuesday March 13th, 2007 | 2 Comments on QTreeModel
Posted in Itemviews, Qt Jambi

Qt has a pretty nice architecture for doing MVC (Model/View/Controller) and being in the Qt Jambi team we wanted make Qt Jambi have access to all this. Unfortunatly we rather quickly ran into 2 big issues: Performance. The Qt itemviews framework is heavily based on the QModelIndex class which is a light-weight object that is […]

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QGraphicsView: Widgets on the Canvas

Published Friday March 9th, 2007 | 10 Comments on QGraphicsView: Widgets on the Canvas
Posted in Graphics Items, Graphics View, Labs, Qt

Items or widgets? QGraphicsItem or QWidget? Which should I choose? Can you do everything with both? Mostly. You can write a games board widget, or a games board scene. An audio spectrum widget, or an audio spectrum item. Is QWidget faster? It can be, especially for simple widgets, and if you do everything right and […]

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