For reasons unknown previewProc and filterProc were disabled. Enabled them.
diff --git a/Mac/Modules/Nav.c b/Mac/Modules/Nav.c
index b4984da..dd6a57c 100644
--- a/Mac/Modules/Nav.c
+++ b/Mac/Modules/Nav.c
@@ -202,11 +202,9 @@
} else if( eventProcP && strcmp(keystr, "eventProc") == 0 ) {
*eventProcP = my_eventProcUPP;
} else if( previewProcP && strcmp(keystr, "previewProc") == 0 ) {
- PyErr_SetString(ErrorObject, "No callbacks implemented yet");
- return 0;
+ *previewProcP = my_previewProcUPP;
} else if( filterProcP && strcmp(keystr, "filterProc") == 0 ) {
- PyErr_SetString(ErrorObject, "No callbacks implemented yet");
- return 0;
+ *filterProcP = my_filterProcUPP;
} else if( typeListP && strcmp(keystr, "typeList") == 0 ) {
if ( !PyArg_Parse(value, "O&", ResObj_Convert, typeListP) )
return 0;