Python interface how to detect file is not open?

Hello to all...

I'm trying to create a custom ui with python and I need to detect if an ngc file couldnt opened succesfully.

For this problem I'm using interpreter_errcode like;

self.s = self.emc.stat()

self.s.interpreter_errcode

but there is no return with this code..

Can anyone help me?

I might add that you should check the file name (using linuxcnc status) before you load the program, then check it after. If they are the same then the program probably loaded file.

eg gladevcp doe it like this (the code wont work for you but the idea is good):

def _load_file(self, filename):
if filename:
self.linuxcnc.mode(linuxcnc.MODE_AUTO)
old = self.gstat.stat.file
self.linuxcnc.program_open(filename)
if old == filename:
self.gstat.emit('file-loaded', filename)

Thanks bro. Thats the way....