qt5ct - Qt5 Configuration Tool This program allows users to configure Qt5 settings (theme, font, icons, etc.) under DE/WM without Qt integration. Official home page: https://sourceforge.net/projects/qt5ct/ Requirements: - GNU Linux or FreeBSD - qtbase >= 5.4.0 - qtsvg >= 5.4.0 (For svg icons) - qttools >= 5.4.0 (For build only) Installation: qmake PREFIX= make make install (under root) Add line 'export QT_QPA_PLATFORMTHEME=qt5ct' to ~/.profile and re-login. Alternatively, create the file /etc/X11/Xsession.d/100-qt5ct with the following line: export QT_QPA_PLATFORMTHEME=qt5ct Now restart X11 server to take the changes effect. Extra build options (for advanced users only): qmake DISABLE_WIDGETS=1 - compiles platform plugin without QtWidgets (useful for QML applications only) qmake PLUGINDIR= - changes the default installation path of the plugins (libqt5ct.so and libqt5ct-style.so) Debug Messages: By default, platform plugin prints debug information to stderr. To disable this behaviour, you should export the following environment variable: export QT_LOGGIN_RULES="qt5ct.debug=false" Another way is to change qtlogging.ini file. See Qt documentation for details: http://doc.qt.io/qt-5/qloggingcategory.html (paragraph "Configuring Categories") Files and Directories: qt5ct - Qt5 configuration tool libqt5ct.so - qt5ct platform plugin libqt5ct-style.so - qt5ct proxy style plugin ~/.config/qt5ct/qt5ct.conf - configuration file ~/.config/qt5ct/qss/ - style sheets Translation: Use Transifex service: https://www.transifex.com/projects/p/qt5ct/