Python Component issueing errors or warnings to LinuxCNC

Hello,

I have the hopefully trivial questions how to issue errors and warnings from a Python component?

Best regards,

Marc

Would need more info.
Usually errors are shown with dialogs or printed in the terminal

But your question is vague.

What errors? Linxcnc's ?....the programs's ?

Are you using a GUI library or do you just want to print to the terminal to debug?

If you wish to display linuxcnc errors - it can be tricky and depends on what (if) screen is also being used.

I would like to display an LinuxCNC error. When I do this out of a remap.py and can do it with e.g.

and then use

and it pops up in LinuxCNC (Axis GUI and GMOCCAPY).
Even though I'm also there missing how to specify something like a message level to define if it is just a message, warning, error....

I would like to do the same from Python component.

unfortunately that library is unavailable outside of remap code.
I know of no other way to send a user message through linuxcnc's error channel.
I worked around this problem in qtvcp by sending linuxcnc's error messages through GObject messages so i could add my own messages.
But this is screen dependent and cannot be done with multiple python programs on the same system.

I think the error system in linuxcnc could use a re-think specifically for there problems.

the easiest thing to do is pop your own messag dialogs.
GMoccapy, gscreen and qtvcp can pop messages controlled by HAL pins.
It does mean the messages can't change after start up.

Or you can build your own dialog in your python code.

Chris

Thank you Chris. Unfortunately not the easy solution I have hoped for...

Regards,

Marc

We should create a NML message command for this purpose that can be send from python's linuxcnc module. I wonder how hard that would be.

Afaik it already exists, it's just not included in the python module.

What makes you say that?