Command Line Documentation
qt6options
Common commandline options for all applications based on the toolkit
Qt application -style= style / -style style -stylesheet= stylesheet / -stylesheet stylesheet -widgetcount -reverse -qmljsdebugger= port -platform platformName[:options] -platformpluginpath path -platformtheme platformTheme -plugin plugin -qwindowgeometry geometry -qwindowicon icon -qwindowtitle title -reverse -session session -display hostname:screen_number -geometry geometry -dialogs= [xp|none] -fontengine= freetype -h, --help and -? on -v --version

Options
The following options apply to all applications:
-style= style / -style style 	 Set the application style. Possible values depend on the system configuration. If is compiled with additional styles or has additional styles as plugins these will be available to the -style command line option.
-stylesheet= stylesheet / -stylesheet stylesheet 	 Set the application styleSheet. The value must be a path to a file that contains the Style Sheet.
-widgetcount 	 Print debug message at the end about number of widgets left undestroyed and maximum number of widgets existed at the same time.
-reverse 	 Set the application's layout direction to Qt::RightToLeft. This option is intended to aid debugging and should not be used in production. The default value is automatically detected from the user's locale (see also QLocale::textDirection()).
-qmljsdebugger= port 	 Activate the QML/JS debugger with a specified port. The value must be of format port:1234[,block], where block is optional and will make the application wait until a debugger connects to it.
-platform platformName[:options] 	 Specify the Platform Abstraction (QPA) plugin.
-platformpluginpath path 	 Specify the path to platform plugins.
-platformtheme platformTheme 	 Specify the platform theme.
-plugin plugin 	 Specify additional plugins to load. The argument may appear multiple times.
-qwindowgeometry geometry 	 Specify the window geometry for the main window using the -syntax. For example: -qwindowgeometry 100x100+50+50
-qwindowicon icon 	 Set the default window icon.
-qwindowtitle title 	 Set the title of the first window.
-session session 	 Restore the application from an earlier session.
-display hostname:screen_number 	 Switch displays on . Overrides the DISPLAY environment variable.
-geometry geometry 	 Specify the window geometry for the main window on . For example: -geometry 100x100+50+50
-dialogs= [xp|none] 	 Only available for the platform. XP uses native style dialogs and none disables them.
-fontengine= freetype 	 Use the FreeType font engine.
-h, --help and -? on 	 Print all options and the application description.
-v --version 	 Display the version string of the application.

See Also
kf6options(7)

Authors
Man page originally written by
Updated to 5 by
The infos for this man page are from QApplication documentation, QGuiApplication documentation and QCommandLineParser documentation.