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GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent.

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Octocat-spinner-32 3rdparty update KDAB copyright year to 2014
Octocat-spinner-32 client Completely modularize property controller & widget
Octocat-spinner-32 cmake Merge remote-tracking branch 'origin/2.0'
Octocat-spinner-32 common Merge remote-tracking branch 'origin/2.0'
Octocat-spinner-32 core Merge remote-tracking branch 'origin/2.0'
Octocat-spinner-32 docs Fix API docs generation.
Octocat-spinner-32 hooking Remove duplicate include.
Octocat-spinner-32 inprocessui update KDAB copyright year to 2014
Octocat-spinner-32 launcher Include <algorithm> for std::sort.
Octocat-spinner-32 plugins Silence CMake warning when KF5CoreAddons isn't found.
Octocat-spinner-32 resources Add QtQuick2 type icons.
Octocat-spinner-32 tests Merge remote-tracking branch 'origin/2.0'
Octocat-spinner-32 ui Qt4.7 support: Don't use attribute 'theme' in .ui
Octocat-spinner-32 .emacs-dirvars For us XEmacs people
Octocat-spinner-32 .gitignore Minor: These files come from kdiff3
Octocat-spinner-32 .kateconfig Add .kateconfig file with indention settings.
Octocat-spinner-32 .krazy Remove the camel-case checker.
Octocat-spinner-32 CHANGES update for 2.0.1 release
Octocat-spinner-32 CMakeLists.txt Lower minimum required version for Qt4.x series
Octocat-spinner-32 GammaRay.desktop Correctly install icons, so that the right size is picked automatically.
Octocat-spinner-32 Slightly improve Qt5 dependency search.
Octocat-spinner-32 Install.txt Remove the manual DISABLE_FIND_PACKAGE handling.
Octocat-spinner-32 License.txt Rename COPYING to License.txt (to be consistent with Charm)
Octocat-spinner-32 Add (symlinked to ReadMe.txt)
Octocat-spinner-32 ReadMe.txt update KDAB copyright year to 2014
Octocat-spinner-32 Don't hardcode my name/email for the CMakeLists.txt license either.
Octocat-spinner-32 config-gammaray-version.h.cmake second half of rename commit - sorry for the early push :(
Octocat-spinner-32 config-gammaray.h.cmake Add architecture detection for ELF.
Octocat-spinner-32 debian.changelog update version for 2.0.1 release
Octocat-spinner-32 debian.control merge from 1.2 branch
Octocat-spinner-32 debian.rules merge from 1.2 branch
Octocat-spinner-32 gammaray.dsc update version for 2.0.1 release
Octocat-spinner-32 gammaray.spec update soversion to 2.0.1 as well


GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent. GammaRay uses various DLL injection techniques to hook into an application at runtime and provide access to a lot of interesting information.

GammaRay can:

  • Browse the QObject tree with live updates.

  • View, and to some extent, edit QObject static and dynamic properties.

  • View and call slots of a QObject (similar to qdbusviewer).

  • View other QObject elements such as signals, enums and class infos introspectively.

  • List all QObject inbound and outbound signal/slot connections.

  • Provide live widget preview. Useful for finding layout issues).

  • View the content of any QAbstractItemModel (QAIM). Very useful when debugging a proxy model chain for example.

  • Browse the QAbstractProxyModel (QAPM) hierarchy.

  • Browse the QGraphicsView (QGV) item tree of any QGV scene.

  • Show a live preview of QGV items, including showing their coordinate system, transformation origin, rotate/zoom/pan, etc.

  • Act as a complete java script debugger, attachable to any QScriptEngine (including the usually not accessible one used by QML internally).

  • Perform HTML/CSS/DOM/JS introspection/editing/profiling on any QWebPage, thanks to QWebInspector.

  • Browse the QResource tree and its content.

  • Browse QStateMachines, along with their states and transitions.

  • Show all registered meta types.

  • Show all installed fonts.

  • Show all available codecs.

  • Browse all QTextDocuments, along with the ability to edit them and view their internal structures.

  • Show all QTimers and their statistics (number of wakeups, wakeup time, ...)

Head Engineer for GammaRay is Volker Krause


Get Involved

If you want to contribute, please check out:


Copyright (C) 2010-2014 Klarälvdalens Datakonsult AB, a KDAB Group company,

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

About KDAB

GammaRay is supported and maintained by Klarälvdalens Datakonsult AB (KDAB)

KDAB, the Qt experts, provide consulting and mentoring for developing Qt applications from scratch and in porting from all popular and legacy frameworks to Qt. Our software products increase Qt productivity and our Qt trainers have trained 50% of commercial Qt developers globally.

Please visit to meet the people who write code like this. We also offer Qt training courses.

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