Thank you for your answer Donn ! Unfortunately, I will have to deal with Bound properties (JavaBeans) to be sure that the properties I want to monitore fire PropertyChange events…
Thanks again for your articles,
Best Regards

@julien – I do not have an answer for you. Perhaps a person with more knowledge of java can explain why ‘PropertyChange’ is only fired for a subset of JLabels properties. As for the ‘PropertyPostSet’ listener this looks like a bug to me. I suspect that the MATLAB notation changes the UDD peer and generates the ‘PropertyPostSet’ event and synchronizes the java objects property. When the java notation is used it may be that the java object is set and then the UDD object is synchronized. If that is the order of events then this may be related to MATLABs lack of support for asynchronous events in COM objects. Both the java peer mechanism and COM support are based on UDD. The MathWorks explicitly states with COM that asynchronous events are not supported.

Sorry I can’t be of more help,

Donn

J=handle(javax.swing.JLabel('Hello'),'CallbackProperties');
set(J,'PropertyChangeCallback',@(h,e)disp('Property changed'));

When I modify the “Text” property, it works perfectly well.

>> J.setText('New Value');
Property changed

However, the callback does not trigger on every properties. For example,

J.setAutoscrolls(true); % Does not trigger the Callback

So, my second try was to use UDD property event mechanism.

J=handle(javax.swing.JLabel('Hello'),'CallbackProperties');
P=findprop(J,'Text');
L=handle.listener(J,P,'PropertyPostSet',@(h,e)disp('UDD property changed'));

This works, but only when the property value is changed from the set method on the UDD object :

>> J.setText('Again a new value'); % Java side : does not trigger listener callback
>> set(J,'Text','Hello'); % This triggers the listener callback
UDD property changed

What I would like is to be able to trigger the callback on all properties of java objects and from property changes which come from java side (j.setProperty syntax) or Matlab side (set(obj,’Property’,Value) syntax).

Do you know how I could do that from Matlab side ?
Thank you very much in advance for your help.