List of URIs
a #GAppLaunchContext
#GSpawnFlags, used for each process
a #GSpawnChildSetupFunc, used once for each process.
Callback for child processes
file descriptor to use for child's stdin, or -1
file descriptor to use for child's stdout, or -1
file descriptor to use for child's stderr, or -1
true on successful launch, false otherwise.
Equivalent to gio.desktop_app_info.DesktopAppInfo.launchUrisAsManager but allows you to pass in file descriptors for the stdin, stdout and stderr streams of the launched process.
If application launching occurs via some non-spawn mechanism (e.g. D-Bus activation) then stdin_fd, stdout_fd and stderr_fd are ignored.