int  initXPM(char ***mime_types, int *nrtypes, float **prefs);
  int  openXPM(const W3ADocumentInfo doc,  Widget  window, long id);
 int writeXPM(long id, const char *buf, size_t nbytes);
  int  closeXPM(long id);
 void eventXPM(long id, long source, long eventtype, void *params);
  int  infoXPM(long id, W3ADocumentInfo *doc);