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This category contains development-related and API documentation for the Trinity Desktop Environment.

New to Trinity development?

Take a look at the following pages:

Building and Distributing Trinity

See also pages in Category:Packagers.

Tutorials and Documentation

Qt3 and TQt



Information in this section should be used with care, as it was not written for the current version of Trinity. However, much of it still applies. If you know of any other interesting KDE3 documentation or tutorials, please add them to this section.

The original API reference, at
The architecture pages detail how everything was originally supposed to fit together. Ported from the KDE wiki.
On everything from using kdevelop to writing dcop-aware applications to creating window themes. Ported from the KDE wiki.
Ported from the KDE wiki and verified against a working KDE3 instance.
Mandatory and optional packages for building KDE3, most of which are still used by Trinity.


C++ GUI Programming with Qt 3

Blanchette, Jasmin & Summerfield, Mark. (2015). C++ GUI Programming with Qt 3. (ISBN 0-13-124072-2)

Things to note:

  • Names changed from "Qt..." to "TQt..."
  • compiling by hand needs something like g++ a.cpp $(pkgconf tqt --cflags --libs) -lstdc++
  • qmake -project ... will not include the TDE folders, so you'll have to add them manually to the *.pro file
  • When in doubt check against the TQt API documentation

by Dr. Nikolaus Klepp

GUI Programming with Python: QT Edition

Boudewijn Rempt - Copyright © 2001 by Commandprompt, Inc

The main topic of this book is application development using PyQt.

KDE 2.0 Development

David Sweet, et al. (2002). KDE 2.0 Development.

Covers, among other things, KDE 2.0 widgets, Qt API, actions, icons, custom widget painting, internationalization, network transparency, KParts, DCOP, aRts/MCOP, ImageIO, OpenGL and Mesa, drag and drop, session management, image manipulation, spell checking, and documentation creation.

Mind the changes that happened between Qt 2 and Qt 3, Qt3 and TQt, KDE 2.x and KDE 3.x and KDE 3.x and TDE.

KDE 2/Qt Programming Bible

Arthur Griffith (2000). KDE 2/Qt Programming Bible

Covers KDE 2.x and Qt 2 widgets, mouse and keyboard handling, graphic file formats, fonts, colors, drawing and painting with QPainter, graphics manipulation, drag and drop, IPC and applets, internationalization etc.

Also mind the changes that happened between Qt 2 and Qt 3, Qt3 and TQt, KDE 2.x and KDE 3.x and KDE 3.x and TDE.


This category has only the following subcategory.

Pages in category "Developers"

The following 76 pages are in this category, out of 76 total.