int regress_test_callback_user_data RegressTestCallbackUserData callback gpointer user_data regress_test_callback_user_data int regress_test_callback_user_data (RegressTestCallbackUserData callback, gpointer user_data);

Call - callback parameter persists for the duration of the method call and can be released on return.

<code>callback</code> <code>user_data</code> <code>Returns</code>