Function gio_sys::g_file_copy

pub unsafe extern "C" fn g_file_copy(
    source: *mut GFile,
    destination: *mut GFile,
    flags: GFileCopyFlags,
    cancellable: *mut GCancellable,
    progress_callback: GFileProgressCallback,
    progress_callback_data: gpointer,
    error: *mut *mut GError,
) -> gboolean