hannibal.holm at gmail.com wrote: > The invokation of the foo-function goes somewhere in the line of: > > PyObject *up = PyBool_FromLong(1L); > if (! up) PyErr_Print(); > > PyObject *res = PyObject_CallFunction(action.u.button.u.s, > "(NIH)", what happens if you use "(OIH)" instead ? </F>