gio_sys

Function g_app_info_get_default_for_type_async

Source 
pub unsafe extern "C" fn g_app_info_get_default_for_type_async(
    content_type: *const c_char,
    must_support_uris: gboolean,
    cancellable: *mut GCancellable,
    callback: GAsyncReadyCallback,
    user_data: gpointer,
)
Available on crate feature v2_74 only.