Follow changes in MMCore
pymmcore-plus implements an enhanced Observer pattern, making it easier to connect callback functions to events that occur
in the core. This is useful for things like updating a GUI when a property changes,
or writing and/or processing data as it is acquired.
See the Events API documentation for complete details on what events are emitted
and how to connect to them.
| on_prop_changed.py |
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17 | from pymmcore_plus import CMMCorePlus
core = CMMCorePlus.instance()
core.loadSystemConfiguration()
@core.events.propertyChanged.connect
def _on_prop_changed(dev, prop, value):
# Note that when state devices change either the state or the label
# TWO propertyChanged events will be emitted, one for prop 'State'
# and one for prop 'Label'. Probably, best to check the property
# name and only respond to one of them
if dev == "Objective" and prop == "Label":
print("new objective is", value)
core.setState("Objective", 3)
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