wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
// Find the class object and put it back in the instance
wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
// Find the class object and put it back in the instance