Question regarding Python callbacks

So. I'm working my way through GladeVCP programming (not very far yet :/ ) and am having difficulty with the simple call back in 8.2 of the docs. I'm pretty sure my Python environment is set up ok with 2.7. I can do things like dump linuxcnc.stat. When I attempt the "simple handler model" with my config though, nothing happens.

• The handler is called out correctly in the.ini GLADEVCP= -u
• The handler function name is in agreement with the signal name in GtkButton "pressed"
• Nothing complains when I run my configuration/glade panel, but the button label does not change as described in the doc

I'm sure I'm missing something basic here again, but so far I haven't even been able to throw an interesting error message.

FWIW, glade, python and ini attached

Thanks,
Ron

Look at the GMOCCAPY PLASMA example (sim), it has several extra Glade files with Python handlers. This should provide a good working example, at least it did for me.

John

just a quick look this looks wrong:

GLADEVCP= -u hitcounter.py Fred1.ui /ROUTINES/DemoHandler.py

Do you wish to load hitcounter.py and DemoHandler.py ?
Also I feel that the path /ROUTINES/DemoHandler.py seemd wrong, but that depends on where you launched the config from.
is there any pertinent info from the terminal?

Chris M

I am so red-faced. A guy just assumes because he is trying some things he's not familiar with, that the problem must be there. A path error!

So, you're right, putting the handler down in my /ROUTINES directory was just dumb.

I _was_ under the impression that I could include as many .py's as I wished when calling GladeVCP with -u, but evidently not. hitcounter.py was just leftover cruft from the sim.axis demo so I wasn't using it, but it definitely prevented things from loading when I tried to include both hitcounter and DemoHandler. I guess it won't matter once I move on to the class-based handler model.

Well. Good to know the example is once again thoroughly tested

Thanks tons Chris,
Ron