Using events and listeners to monitor change in variable

[xentity1x]

I'm using the object oriented programming features of Matlab to work with the data acquisition toolbox. Basically, I have a property of an object that is a member of the handle class. Normally, its value is 0 (obj.property=0). With a certain external input from my experimental setup it can be made to equal 1 (obj.property=1). I'm trying to figure out a way to monitor for that change in the property value. It seems like you need to setup events and listeners, but I'm not totally sure how to do it. Any ideas?

 

[NateD]

Yes, you can use events and listeners. To do this, first you will need to create an event object. The code for that would look like this:myEvent = event.listener;Then, you will need to set up a callback function that will be triggered whenever the property value changes. The code for this would look like this:set(myEvent, 'Callback', @(src,eventdata) myFunc(src,eventdata));where myFunc is a function that you have written to handle the changing of the property value.Finally, you will need to register the listener to the object's property. The code for this would look like this:addlistener(obj,'property','PostSet',myEvent);This will register the listener to the object's property and will trigger the callback function whenever the property value changes.