- The notify method triggers an
event, and a message is broadcast.
- The callback function is executed.
- A listener awaiting the message
executes its callback.
- Setting the property runs a set access method,
which, in turn, executes notify.
- A property is assigned a new value. myfunceval
Properties
FofXY
Methods
Events
UpdateGraph
set.FofXY
Listener
Properties
EventName = ‘UpdateGraph’
FunctionHandle = @listenUpdateGraph
myfuncview
Methods
listenUpdateGraph
UpdateGraph
obj.FofXY = @(x,y)x^2+y^2
function set.FofXY(obj,func)
obj.FofXY = func;
notify(obj,’UpdateGraph’);
end
The fcnview class defines a listener for this event. When fcneval triggers the event,
the fcnview listener executes a callback function that performs the follow actions:
- Determines if the handle of the surface object stored by the fcnview object is still
valid (that is, does the object still exist)
- Updates the surface XData, YData, and ZData by querying the fcneval object's
Data property.
The fcneval class defines an event name in an event block:
Techniques for Using Events and Listeners
