Async API in qml and storing QJSValue in C++ objects

[Rem-Kolomna]

I want to add async API in my qml application.
I implemented it in c++:

Q_INVOKABLE void getObject(QJSValue value);

and use it from qml this way:

myAPi.getObject(
    function()  {
       alert("hi")  
    }
);

Is it safe to store QJSValue ( that is a handle to JavaScript function) in C++ and call its later? Can garbage collector remove this function and calling it later may cause runtime error?

[JKSH]

Hi,

@Rem-Kolomna said:

Is it safe to store QJSValue ( that is a handle to JavaScript function) in C++ and call its later? Can garbage collector remove this function and calling it later may cause runtime error?

Yes, it's safe. QJSValue is not just a handle. You will have a full a copy of the function in C++, so it will remain even if the original is removed.

[Rem-Kolomna]

ok, thank you!