the long name of an option used to specify it in a commandline
the short name of an option
flags from GOptionFlags
the type of the option, as a GOptionArg
the description for the option in --help output
the placeholder to use for the extra argument parsed by the option in --help output
2.42
Add an option to be handled by application.
Calling this function is the equivalent of calling Application.addMainOptionEntries with a single GOptionEntry that has its arg_data member set to NULL.
The parsed arguments will be packed into a glib.VariantDict which is passed to handle-local-options. If G_APPLICATION_HANDLES_COMMAND_LINE is set, then it will also be sent to the primary instance. See Application.addMainOptionEntries for more details.
See GOptionEntry for more documentation of the arguments.