Development/Tutorials (ja)

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Development/Tutorials


このチュートリアルは、あなたが KDE をどのように使えばいいのかを見つける最速の手段です。ここで利用可能なチュートリアルの一覧はKDE4 について です。KDE3とKDE2については、このページの一番下から利用可能です。

KDE 4 プログラミングの導入

あなたは KDE 4 のアプリケーションを書くことに興味をお持ちですか? このチュートリアル集は、はじめての KDE プログラミングを作ることを目指しています。

Hello World
予備的な導入 - KDE4 プログラミングの基本
Creating the Main Window
このチュートリアルであなたにお見せするのは、アプリケーションの最も重要な魔法 Main Window です
Using KActions
メニューとツールバーにアクションを追加するためにはどうすればいいか
Saving and Loading
KIO ライブラリの紹介。アプリケーションに、ロードとセーブの操作を追加する例です
Command line arguments
コマンドラインからファイル名を指定して、テキストエディタでファイルを開く機能を追加する例です

Basics

Porting Your Application
Help Porting Applications from Qt3/KDE3 to Qt4/KDE4
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Introduction to CMake
How to use the CMake build system used by KDE4.
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Common Programming Mistakes
Various common mistakes made while developing Qt and KDE applications and how to avoid them.
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Debugging Linker Errors
'How to understand and debug errors from the linker, at compile time.
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Using Qt Designer to build user interfaces
How to create UI files with designer, and how to integrate them into a KDE program.
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Using Qt Creator to develop your KDE program
How to integrate Qt Creator use into KDE development.
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Creating Libraries to share code
How to add the library to the buildsystem and how to prepare the source code.
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Session Management
Make your application aware of X sessions
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Testing And Debugging

Debugging your application
Tips, tools and techniques to apply when debugging your KDE application
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Writing Unittests for Qt4 and KDE4 with QTestLib (Original link)
Tutorial by Brad Hards that describes how to write unit tests using the QTestLib framework. It is presented as an example based tutorial, and is still under development.
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Semi-automatic ways to detect code errors
Techniques you can use to detect errors in KDE code
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Managing Configuration Data With KConfig

Introduction To KConfig
An overview of the KConfig classes and how to use them in your application code
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Using KConfig XT
Tutorial on how to efficiently use the KConfig XT framework.
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Updating KConfig Files
Tutorial on how to write an update script to keep changes in your application's config file format in sync with the user's already existing config file
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Services: Applications and Plugins

Introduction to the Services Framework
An overview of the services framework in KDE and what it provides the application developer. Covers the system configuration cache (SyCoCa), the source data files and what the indexed information can be used for.
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Finding Services Using Trader Queries
How to find services, such as plugins or mimetypes, that are indexed in the SyCoCa using Trader Query Syntax
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Creating and Loading Plugins Using KService
Learn how to define custom plugin types, find installed plugins (including 3rd party plugins) and load them in an easy and portable fashion using KService.
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Localization

See also Localization portal.

Introduction To Unicode
An introduction to what Unicode is as well as how to handle Unicode data in KDE applications.
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Writing Applications With Localization In Mind
This tutorial covers what localization is, why it's important and how to ensure your application is ready to be localized. A must read for all application developers.
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Avoiding Common Localization Pitfalls
There are several common mistakes that prevent applications from being properly localized. Find out what they are and how to easily avoid them in this tutorial.
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Building KDE's Localization Module
Building and installing language support from KDE's localization (l10n) module is a good idea for those working on applications in the main KDE repository. Doing so will allow you to test your application in another language and spot problem areas. Learn how to do just that in this tutorial.
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Incorporating i18n Into the Build System
Once your application is ready to be localized, the next step is to ensure that translation files are built automatically and kept up to date. This tutorial covers the necessary CMakeFiles.txt additions as well the process of distributing the resulting message catalogs with your application.
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Common i18n Challenges and Solutions
This tutorial covers challenges that you may eventually run into such as translating handbooks and other data that exists outside of the source code, merging and handling obsolete .po files, dealing with freezes, coding in languages other than English and creating independent releases of or moving applications between KDE modules.
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Semantic Markup of Messages
To ensure consistent presentation and more meaningful representations of messages in applications, semantic markup can be applied to messages marked for translation using the KUIT system. This tutorial describes how this system works.
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Automated i18n Code Checking
The Krazy code checker scans KDE's code and reports common i18n mistakes.
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Documentation

API Documentation
This tutorial explains how to document your APIs properly.
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Man Pages
Writing and Generating Reference Manual Pages.
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Source Code
http://websvn.kde.org

Accessibility

Accessibility
This tutorial will explain how to make your application accessible.
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Text-To-Speech
How to utilize Jovie text-to-speech service in your application.
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Application Automation and Scripting

D-Bus

Introduction to D-Bus
A straight-forward introduction to the core concepts in D-Bus from an application developer's perspective, this tutorial covers what D-Bus is and how it can be used by applications.
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Accessing D-Bus Interfaces
A step-by-step guide to calling D-Bus methods and connecting to D-Bus signals using QtDBus.
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Intermediate D-Bus
Tips to make use of QtDBus when faced with problematic real-world interfaces.
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Creating D-Bus Interfaces
Learn how to expose functionality in your application by creating and using custom D-Bus interfaces. Covers generating the XML descriptions, instantiating interfaces at run time and setting up the build system with CMake.
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Using Custom Types with D-Bus
Learn how to use your own types in classes exported on D-Bus. Covers marhaling and unmarshaling of objects, the integration of custom types into XML descriptions and registering the custom types with the Qt Meta Object system.
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D-Bus Autostart Services
Turn your application into a D-Bus autostart service with this tutorial. This D-Bus feature, also known as "D-Bus service activation", will ensure that even when your application isn't running that D-Bus calls made to it will work by relying on the D-Bus daemon itself to start your app if and when needed.
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Porting from DCOP to D-Bus
Port your applications from DCOP to D-Bus with this handy guide.
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Konqueror

Creating Konqueror Service Menus
This tutorial shows you how to create mimetype-specific actions in Konqueror's context menu (aka "servicemenus").
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Kross

Introduction to Kross
An introduction to the Kross Scripting Framework.
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Hello World
A first application with working kross code.
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Calling Functions in Kross
Simple demonstration of calling scripting functions
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Connecting Signals and Slots in Kross
Simple demonstration of connecting object signals with script slots
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Scripts as Plugins with Kross
This tutorial provides a step-by-step introduction how to integrate scripts as plugins into a KDE application.
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Placing script actions in your application menus
Simple demonstration on how to extend you application menus to execute script files.
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How to use an ActionCollection
A small Tutorial on How to use Kross::ActionCollections.
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Calligra Plugin Tutorials

Calligra Overview
This document shows an overview of the different Calligra plugin types and tells you what each of their purpose and strengths are. If you are new with Calligra plugins, this is the place to start.
Calligra Plugin Creation
This gives a technical overview of what it means to write a Calligra plugin.
Creating Calligra Flake Plugins
This tutorial shows you how you can build a plugin for Calligra applications to allow you embed content in ODF documents using Flake.
Calligra Words Scripting
This tutorial shows how to script Calligra Words with Python, or JavaScript using Kross.
Calligra Sheets Scripting
This tutorial shows how to script Calligra Sheets with Python, or JavaScript using Kross.


SuperKaramba

SuperKaramba Tutorial
This tutorial provides an overview of SuperKaramba, theme files and scripting with Python, Ruby and JavaScript.
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System Activity

Writing script actions for the process's context menu
This tutorial shows how to add a context menu action to show custom information about a process.
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Plugins and KParts

Writing kontact plugins
Kontact plugins are KParts. This tutorial describes how you can write one.
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Using KParts
Learn how to load a KPart into an application window.
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Writing Qt Designer Plugins
Add your widgets to Qt Designer and thus make them usable in UI files.
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Search and Metadata

Strigi

Writing file analyzers
File analyzers extract data from files to display in the file dialogs and file managers. The data gathered this way is also used to search for files. KDE4 allows the use of multiple analyzers per file type. This tutorial describes how you can write new analyzers.
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Nepomuk

See Nepomuk tutorials.


Hardware Awareness (Solid)

Introduction to Solid
An introduction to using the Solid hardware discovery and interaction system in KDE applications.
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Accessing Network Information
How to use the Solid system to get information about the network
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Creating a Device Action
When your application is interested in registering actions with the system for removable hardware
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Authorization and Privilege escalation (KAuth)

KAuth Basics
An overview of concepts and basic knowledge required to understand and use KAuth effectively
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Using KAuth actions in your application
How to execute KAuth actions in your application, and how to integrate them tightly into your UI
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Creating a KAuth helper to perform a privileged action
You will learn how to use KAuth's helpers and escalation facilities, and how to seamlessly make a privileged and non privileged portion of your application interact
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Creating a KCM requiring authorization upon saving
Learn how to use the high level KCModule API to create KCModules handling authorization, and its UI integration, on their own
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Multimedia (Phonon)

Phonon
How to start with the multimedia API
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How to compile and use Phonon and its GStreamer backend on Linux using Qt 4.3.x
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This article gives you a quick brief of how you can use checkout, compile Phonon and its GStreamer backend on GNU/Linux with just Qt 4.3.x. Towards the end, the article also describes how a developer can make use of Phonon to create simple audio and video players. You can read the article here. You can download the editable OpenDocumentText file from here.
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Writing Backends
How to start creating a new backend for the multimedia API
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Resources
Please have a look at the online documentation for information on the Phonon API. If you prefer using Qt Assistant or Qt Creator you can also use our offline documentation.
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Plasma

See Plasma tutorials.


Personal Information Management (Akonadi)

Using Akonadi in Applications
Displaying and modifying data provided by Akonadi
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Developing Akonadi Resources
Akonadi Resources are agent programs which transport PIM data between Akonadi and a backend (files, servers, etc)
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Using custom data types with Akonadi
Akonadi can handle arbitrary data as item payloads through the use of a plugin based serialization framework
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Porting Applications which use KResource API
Applications using KDE's now deprecated KResource APIs, e.g. KABC or KCal, need to be ported to use their Akonadi equivalents
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Kate / Kwrite

Getting started with KTextEditor plugins
Creating your first KTextEditor plugin
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Developing a plugin with configuration dialog
Adding a configuration dialog to the Time & Date example
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A small Editor
Create a small application using KTextEditor
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KDevelop

KDevelop-PG-Qt Introduction
Information on the KDevelop parser generator, useful for language plugins.
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Printing

KDE mostly uses the Qt Printing infrastructure.

Hello World
Introduction to the KDE printing system
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Print Dialog
Using the KDE print dialog
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kioslaves

Collaboration

Open Collaboration Services (libattica)

Introduction to Attica
In this tutorial a simple widget showing information about a Person on the server is created.
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Get Hot New Stuff

Get Hot New Stuff 3 - Download
How to use KHotNewStuff3 in your application.
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Get Hot New Stuff 3 - Checking for Updates
How to check if updates for installed stuff are available without showing the dialog/widget.
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Get Hot New Stuff 3 - Upload
How to add an upload dialog to your application.
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Old links for KNS2 and KNS1 content:

Introduction to Get Hot New Stuff 2
A short tutorial about how to use KHotNewStuff2 in your application. Deprecated, use version 3
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Introduction to Get Hot New Stuff
An introduction to the developer-friendly network update system that allows KDE applications to fetch new application data at runtime in a user friendly manner.
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KNewStuff Secure (Original Link)
Tutorial showing how to share resources in a secured way (KDE 3.4 and later). By András Mantia <[email protected]>.
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Goya

Introduction to Goya usage
An introduction for the Goya subsystem usage, which allows you to easily add widgets to your itemviews and connect their signals to your code, as they were real widgets.
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Introduction to Goya usage (part 2)
The second part of the tutorial, with a slightly more complex example than the first part.
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Other programming languages

Python

An Introduction to PyQt
Starting off
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PyQt by Example
Another introduction to PyQt
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PyKDE WebKit Tutorial
A simple web browser application in PyKDE
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101 Introduction to signals and slots
A simple introduction to Qt's signal and slot architecture.
PyKDE DBus Tutorial
An introduction to DBus communication using PyKDE
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PyKDE KNotify Tutorial
An introduction to Knotify (Notifications and KJobs) using PyKDE
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Ruby

KDE Ruby Korundum tutorial
A ruby version of Antonio Larrosa Jiménez's KDE tutorial by Richard Dale. See the Ruby Developers Corner for Qt tutorials and other info.
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Qt4 Ruby Tutorial
Nokia's fabulous introductory tutorial to Qt, translated to Ruby.
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Creating a Plasma Widget in Ruby
Tutorial that shows how to create your first Plasma Applet using the Ruby language.
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Developing Qt4 Applications using Qt Designer and Ruby on Kubuntu
Tutorial that shows how to design a simple User Interface in Qt Designer and then use the resulting widget in a Qt Ruby application we build from scratch.
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Ruby-Qt/KDE Book
There is also an approach to create an Ruby-Qt/KDE Book under a free license. The content will be created in this wiki.
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Shell

Shell Scripting with KDE dialogs (Original Link)
Tutorial by Brad Hards that describes how to use KDE dialogs in shell scripts with kdialog. It is presented as an example based tutorial.
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Graphics Programming

QPainter Perfomance
Hints on avoiding common mistakes leading to poor performance when using QPainter
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Using the KDE Games Libraries

KStandardGameAction
Using libkdegames to make your game fit the kdegames standard
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Highscores
Implementing a simple highscore table into your game
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Theme Selector
Using the libkdegames theme selection dialog
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Palapeli Slicers
Creating a slicer plugin for Palapeli
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KGLEngine

installation and your first KGLItem
start your first kglengine application
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kglpong
Now use our knowledge to make a pong
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KALEngine

Play hello word sound
Using KALEngine for games sound development using openAL
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Play music
Using KALEngine to play music in a stream
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Using the KDE PIM Libraries

iCalendar functionality
Using kcal to manage iCalendar files
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Other tutorials

2D Plotting (KPlotWidget)

Using the KDE data-plotting widget
This tutorial introduces KPlotWidget, which is used for 2-D data plotting. It includes information on simple usage of the widget (including adding and modifying data sets, and customizing the plot axes and labels), and advanced customization (including extending the widget through sub-classing).
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Spelling and Grammar Checking (Sonnet)

Adding spell-checking or grammar-checking to KDE applications
This tutorial introduces Sonnet and how one may use it to add language correction to your KDE application. Sonnet's auxiliary features shall be described in a separate tutorial.
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Pixmap cache (KPixmapCache)

Using the KDE pixmap cache
This tutorial shows how to use KPixmapCache to cache e.g. pixmaps generated from SVGs or some data.
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Using MarbleWidget (Marble)

Using MarbleWidget
This short tutorial describes how to use the MarbleWidget in your project
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Using local SCM for KDE development

Using Git to develop for KDE
Here you find how to use Git to develop for KDE
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Kwin effect tutorial (blog)

blog by Martin Graesslin
This tutorial guides you through the development of a simple KWin effect
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Implementing KSysGuard sensors and adding them

Development/Tutorials/Sensors
This tutorial shows how to write and KSysGuard sensor and connect it to the systray.

Runners

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Porting an application from KSystemTrayIcon to KStatusNotifierItem

Development/Tutorials/PortToKStatusNotifierItem
This tutorials shows how to port an application using KSystemTrayIcon to KStatusNotifierItem
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Using the KDE Wallet API for safe storage

Development/Tutorials/KWallet
"Brief introduction to the KWallet API which can be used for storing all kinds of sensitive information."
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How to edit a wiki with Libmediawiki

Development/Tutorials/Libmediawiki
This tutorial present how to edit a wiki with Libmediawiki.
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KDE2 and KDE3 Materials

KDE3 Tutorials
These tutorials cover topics related to KDE3.
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KDE2 Tutorials
These tutorials cover topics related to KDE2.
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