0 个投票

Hi guys,
I'm having some problems with event in classes. I have a class class like this:
classdef ClassA < handle
properties
prop
end
events
EventA
end
methods
function o = ClassA
addlistener(o,'EventA',@o.callbackfun);
o.prop = ClassB;
end
function callbackfun(o,~,~)
% do something
end
end
end
and the ClassB like:
classdef ClassB < handle
properties
button
end
methods
function o = ClassB
fig = figure;
o.button = uicontrol(fig,'Style','pushbutton','Callback',@(~,~,~) notify(ClassA,'EventA'));
end
end
end
And then, when I click the button, it opens a new figure. Like it was calling ClassA again. What I am doing wrong?
Thanks,

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 采纳的回答

Max Murphy
Max Murphy 2019-12-27

0 个投票

You are very close to having it working! In your Notify callback, you make a call to the constructor ClassA rather than a specifieid object of type ClassA. So you would give the argument to the ClassB constructor to pass an object of type ClassA and then reference that object instead of the class constructor:
classdef ClassB < handle
properties
button
end
methods
function o = ClassB(classAObj)
fig = figure;
o.button = uicontrol(fig,'Style','pushbutton','Callback',@(~,~,~) notify(classAObj,'EventA'));
end
end
end

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