Qt Archive

Qt 4.4 Preview Published

Submitted by borker 2007-12-19 Qt 15 Comments

Trolltech has published a preview of Qt 4.4. "Qt 4.4 is one of the most exciting Qt releases ever, expanding the range of what is possible with Qt. While the release is still several months away, we would like to provide you with a sneak preview of several key new technologies set to be included in Qt 4.4."

Trolltech Pours on the Java Dev Goodness

Submitted by poundsmack 2007-12-07 Qt 87 Comments

Jambi ships as a single Java library, or JAR (Java Archive) file, plus a handful of tools, including an interface layout and design tool, and an Eclipse plug-in. Trolltech uses its vaunted Qt C++ library as the GUI engine and puts Java wrappers around it. This approach uses the JNI (Java Native Interface) to call the necessary functions from Java. More here.

Trolltech Discontinues Linux ‘Greenphone’

Thom Holwerda 2007-10-22 Qt 28 Comments

Trolltech has discontinued its Linux-based 'Greenphone' development platform. Touted upon its introduction as the first Linux-based mobile phone with user-modifiable firmware, the device will be superseded by various third-party products, including not only open phones, but also portable media players, navigation devices, and home automation equipment, the company says.

Trolltech Ports Qt to Windows CE

Submitted by anonymous 2007-10-03 Qt 11 Comments

Trolltech has unleashed a Windows CE version of Qt, its cross-platform application development framework. Qt/WinCE, made available today as a downloadable technology preview, is scheduled to see its final release 'late in Q1 2008', the company said. Qt is an application development framework aimed at enabling developers to compile binaries for Windows, Mac, and Linux OSes from a single code base. Qt's API (application programming interface) comprises some 400 C++ class libraries, Trolltech says.

Trolltech Announces GPL Version of Qtopia Phone Edition

Eugenia Loli 2007-09-18 Qt 23 Comments

Trolltech announced that Qtopia Phone Edition has been ported to the Neo1973 mobile phone from FIC and open-source software provider OpenMoko and has been GPL'ed. Now, in addition to Trolltech's Qtopia GreenphoneT, developers have an additional reference platform and form factor for development and testing of new mobile Qtopia applications. Read on for more and a short Q&A with Benoit Schillings, CTO of Trolltech (also of BeOS fame as one of the original Be, Inc. engineers).

Qt Invaded By Aliens – The End of All Flicker

Submitted by J. M. 2007-08-10 Qt 81 Comments

A Trolltech employee explains how Qt 4.4 will eliminate current problems with redrawing artifacts and poor resizing performance, using windowless child widgets.

The QtSql Module

Thom Holwerda 2007-07-18 Qt 25 Comments

"Nowadays, it is difficult to imagine many applications being able to function without relational databases to back them up. For this reason Qt provides a range of classes in the QtSql module that work with various relational database management systems. Relational tables and queries can also be used as the basis of Interview models."

Final Release of Qt Jambi

Submitted by Eskil A. Blomfeldt 2007-06-06 Qt 13 Comments

After several technical previews and betas, Trolltech has launched Qt Jambi (Qt for Java) as a product under a dual licensing model (commercial and GPL license). There are also some product information and demos, and downloads for open source versions.

Qt v4.3.0 Released

Submitted by Matthew Smith 2007-05-30 Qt 9 Comments

Trolltech has released version 4.3.0 of its cross-platform development toolkit Qt, and the embedded platform Qtopia, with the same API. New features include enhanced Windows Vista support, a new ECMAscript-standard scripting module (QtScript), SSL support, improved OpenGL support, a more flexible main window architecture, SVG generation and rendering, and (in Qtopia) a new font system and OpenGL ES support. More on the new features, and a full changelog. Open-source downloads of Qt (including Windows binary) here and Qtopia here.

Greenphone Developer Challenge

Thom Holwerda 2007-04-16 Qt 7 Comments

"Trolltech today announced the start of the Qtopia Greenphone Developer Challenge, a global contest for innovative development of Linux-based mobile phone applications. Entrants can create their applications using either the community or commercial version of Qtopia Phone Edition."

Qt Jambi Beta Now Available

Submitted by Eskil A Blomfeldt 2007-02-07 Qt 6 Comments

"We are pleased to present the first Qt Jambi beta to our commercial customers and the open source community for testing and feedback. Qt Jambi enables Java developers to utilize Qt: the leading framework for high-performance, cross-platform applications. This release will be followed by a second beta in early Q2 2007, with a final release of Qt Jambi 1.0 currently scheduled for early Q3."

Working Example of an Interview (Qt4 MVC Framework) Model

Thom Holwerda 2006-12-26 Qt No Comments

This is a first of a series of articles which aim to provide a complete and working example of an Interview (Qt4 MVC framework) model. The model is to hold information about a 3D scene for use with OpenGL renderers like QGLWidget. The first thing to do when designing a model is to thing what is the purpose of making it. In this case, I want the model to store information about a 3D scene which can then be rendered using OpenGL (QGLWidget). The scene is to consist of some objects, which can be defined using various ways offered by the OpenGL specification. Part 2 and part 3 are also published.

Developing Linux Apps for the Trolltech Greenphone

Submitted by anonymous 2006-12-06 Qt 7 Comments

"Trolltech's Linux/Qtopia-powered Greenphone aims to provide a real (rather than emulated) hardware platform for mobile phone application developers to test their applications on. This hands-on review takes an in-depth look at the phone's software environment, and at the development tools supplied with it."

Cross Platform Development with Qt

Submitted by elsewhere 2006-11-20 Qt 26 Comments

"This article focuses primarily on some technical aspects of Qt, Trolltech’s cross-platform C++ toolkit which, as you may know, is the architectural core behind the KDE desktop on Linux. At the end, I show how easy it is to create a simple application without writing a line of code." More here.

The QObject Class in Qt4

Eugenia Loli 2006-11-12 Qt 6 Comments

An important class to become familiar with is the one from which all Qt Widgets are derived: QObject. In this chapter, the authors discuss the QObject class in Qt4.

Third Qt Jambi Technology Preview Released

Submitted by anonymous 2006-10-26 Qt 4 Comments

"We are pleased to present the third technology preview of Qt Jambi to our commercial customers and the open source community for testing and feedback. Qt Jambi is a prototype technology that enables Java developers to utilize Qt: the leading framework for high-performance, cross-platform applications." And you can win a MacBook.

Trolltech Releases Qt 4.2; Adds Styleable Widgets

Submitted by Eivind Throndsen 2006-10-04 Qt 19 Comments

Trolltech today released Qt version 4.2. Highlights of the new release include support for styleable widgets and a new Graphics View 2D canvas framework.

Trolltech Releases Second Preview of Qt for Java

Submitted by gunnarsl 2006-08-31 Qt 2 Comments

Trolltech has released a second preview of Qt Jambi - a prototype version of Qt that allows Java programmers to use the popular cross-platform development framework. This second release incorporates the feedback of over 1700 beta testers, and features new additions like Web Start functionality, improved integration with Eclipse and single JAR file deployment for Qt Jambi-based applications. More information is available in the Qt Jambi product alert with tech details in the Qt Jambi Whitepaper. To try it out, sign up for the preview license and download.

Trolltech to Offer “Open” Linux Mobile Phone

Eugenia Loli 2006-08-15 Qt 25 Comments

Trolltech will ship an "open" Linux-based phone in September. The "Greenphone" features a user-modifiable Linux OS, and is meant to jumpstart a third-party native application ecosystem for Linux-based mobile phones.

Trolltech Releases Technology Preview of Qt for Java Development

Submitted by gunnarsl 2006-07-28 Qt 31 Comments

"Trolltech today released an initial technology preview of Qt Jambi to its commercial customers and the open source community for testing and feedback. Qt Jambi is a prototype technology that enables Java developers to utilize Qt."

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