A few weeks ago the APress title Foundations of Qt Development left the printing presses. The book introduces Qt in a step by step fashion, but also delves into most areas of the toolkit. The highlights include an in-depth look at the model/view classes, as well as introductions to all the tools and widgets needed to get started. The publishers were kind enough to send KDE Dot News a copy of the book, read on for a short review.
Trolltech have announced the release of Qt 4.3.1. This release adds bug fixes and performance optimisations. More significant however is the new licence exceptions added to their Free Software edition. This means Qt software can be used along with a larger range of other Free Software libraries and dependencies.
Yesterday Trolltech released the second beta of Qt Jambi, the Qt API for Java. With this release we also released the source code including the Generator under GPL, opening the option for making KDE libs accessible to Java. Though it does not work together with gcj, it does work together with the open source Harmony Virtual machine and runtime.
Trolltech has released version 4.2.3 of Qt. This is mainly a bug-fix release, with updates to numerous classes across all platforms. Changes include a new unofficial Portuguese translation, three fixes to lupdate including one which brings a 400x speed increase, and a fix to a bug in QTextEdit which caused the bottom lines to become unreachable after adding the scroll bar.
Qt community site Qt Centre is celebrating its first anniversary with a programming contest. The contest is open until the end of May and the winning entries will be the best Qt 4 or Qtopia application or component, each selected from one of several categories. Great prizes to be won include a MacBook and two Qtopia Greenphones.
Trolltech has announced the Qt Jambi Developer Contest, which is now open to all developers following the release of the third Technology Preview (TP) of Qt Jambi. The contest is aimed at encouraging both Java and Qt programmers to try out the new features available in the Qt Jambi TP3.
Trolltech has issued new patch releases of all current versions of Qt. Versions 3.3.7, 4.1.5 and 4.2.1 fix a security flaw which can be triggered by transforming specially-prepared pixmaps. It is a recommended update, although no real-world security issues exploiting these flaws have been recorded so far. Distributions are also releasing updated packages, note that distributions may release security-patched updates without changing the Qt version number.