Handle to object method

Ok, so I have this object Object1. One of its properties is another object, Object2 : Object1.prop = Object2.

Now from within a method of Object1, I am creating GUI controls whose callbacks I want to be one of Object2's public methods, say Object2.publicMethod.

So in Object1 I have something of the form:

function callbackWillBeCreated(this)

guicontrol('Callback', @this.prop.publicMethod);

end

This doesn't work ! When the callback is called, Matlab sends an error saying it doesn't know the function.

Does anyone have a fix or an explanation as to why it doesn't work ?

Thanks

Answer 1

[Matt J]

What you had would be fine if you have R2012a or later, which I guess you don't.

But for earlier MATLAB versions, it won't work because "this.prop.publicMethod" is not the name of a function. You will need to do something like this,

 guicontrol('Callback', @() this.prop.publicMethod);

Or, if the callback takes arguments

guicontrol('Callback', @(x) this.prop.publicMethod(x));

and so on.

[Ivan]

This should work, yes. I'll try. But I do have 2012a. Will install 2012b and see if that's better.

Thanks for the quick reply !!

[Matt J]

Before you upgrade, try this in R2012a:

function callbackWillBeCreated(this)

     prop=this.prop;

     guicontrol('Callback', @prop.publicMethod);

end

I think it's just a problem of how much nested indexing you can have.