Implicit Settings on Button Callback

[jdbodyfelt]

Hi, sorry to bother it's me again. I have another question popping up in the property_modification.py example. Namely, in callback you mention that settings are passed implicitly, however, how do you access them within the callback? I've tried a for key, val in kwargs.items(): print(key, val), but it does not produce anything. Thank you!

[jdbodyfelt]

As an update, I can see that args[0] holds an obs_data_t object initially (assuming it's settings), but after pushing the button, it's emptied (as well as kwargs).

[upgradeQ]

What are you trying to do? Have you found a post from @bfxdev about properties ? Maybe this is what are you looking for.

Also a page on the wiki

---

The property_modification.py example snippet was written in June 2020, and there was no intention to access settings in callback. They are passed implicitly using star arguments because later you cannot access it ( as you confirmed it ). **kwargs were passed just to make sure nothing breaks.
Take a look to a new example:

import obspython as obs
from itertools import count

G = lambda: ...
G.settings = None
G.n = 0
G.counter = count()


def refresh_pressed(props, prop, *args):  # pass settings implicitly
    print("refresh pressed")
    if args:
        G.counter = count(obs.obs_data_get_int(args[0], "saved_int"))
    G.n = next(G.counter)
    p = obs.obs_properties_get(props, "button")
    obs.obs_property_set_description(p, f"refresh pressed {G.n} times")
    return True


def script_description():
    return "Modify property and save/load from settings "


def script_load(settings):
    G.settings = settings


def script_save(settings):
    obs.obs_data_set_int(settings, "saved_int", G.n)
    G.settings = settings


def script_properties():
    props = obs.obs_properties_create()
    b = obs.obs_properties_add_button(
        props, "button", "refresh pressed m times", refresh_pressed
    )
    obs.obs_property_set_modified_callback(b, refresh_pressed)
    obs.obs_properties_apply_settings(props, G.settings)
    return props

In order to access settings in callback they must be global.

[jdbodyfelt]

Thank you! On button press, I'm looking to auto-iterate integer counter widgets. Been using the global solution, but seems in script_update I may have been assigning in the wrong direction (settings = G.settings). I'll play some more with it, and if I get it working I'll post my solution...

[MarioMey]

@jdbodyfelt if you have more questions, ask them in Discussion section. There is where I ask my doubts 😉.