[Qt-interest] QtScript: How to prevent default-constructed values calling methods from scripts with wrong types?

[Wilhelm]

Hi all,

this might be a dumb question but I can't find the right answer:

Assume the following class Test:

class Test : public QObject
{
...
    Q_INVOKABLE Size foo(Size s);
...
};

which is exposed in a qtscript engine as variable "test".

The class Size is a value-type declared as a Qt-Metatype.

All works well if I call Test::foo(Size) with a Size-Object. But if
I call say foo("xxx"), the method gets called with a default-constructed
Size-value. That's at least confusing and not want I want. I would like
to have a runtime error here.

How can I achieve that?

-- 
Wilhelm