在MATLAB中,类方法可以在不公开的情况下充当uicontrol回调吗？

Question

在MATLAB 2008a中,有没有办法允许类方法充当uicontrol回调函数而不必公开该方法？从概念上讲,该方法不应该是公共的,因为它永远不应该由类的用户调用.它只应该由于触发回调的UI事件而被调用.但是,如果我将方法的访问权限设置为private或protected,则回调不起作用.我的类派生自hgsetget,并使用2008a classdef语法定义.

uicontrol代码看起来像:

methods (Access = public)
   function this = MyClass(args)
      this.someClassProperty = uicontrol(property1, value1, ... , 'Callback', ...
      {@(src, event)myCallbackMethod(this, src, event)});
      % the rest of the class constructor code
   end
end

回调代码如下所示:

methods (Access = private)  % This doesn't work because it's private
   % It works just fine if I make it public instead, but that's wrong conceptually.
   function myCallbackMethod(this, src, event)
      % do something
   end
end

Answer 1

将回调函数句柄存储为私有属性似乎解决了这个问题.试试这个:

classdef MyClass
    properties
        handle;
    end

    properties (Access=private)
        callback;
    end

    methods
        function this = MyClass(args)
            this.callback = @myCallbackMethod;
            this.handle = uicontrol('Callback', ...
                {@(src, event)myCallbackMethod(this, src, event)});
        end
    end

    methods (Access = private)
        function myCallbackMethod(this, src, event)
            disp('Hello world!');
        end
    end
end