Function gobject_sys::g_signal_group_connect_data

pub unsafe extern "C" fn g_signal_group_connect_data(
    self_: *mut GSignalGroup,
    detailed_signal: *const c_char,
    c_handler: GCallback,
    data: gpointer,
    notify: GClosureNotify,
    flags: GConnectFlags
)

Available on crate feature v2_72 only.