C++ callback in JS using QScriptValue

Montjet

Hi,
I can call JS function with arguments and get the result using QScriptValue but question is: how to send an argument as a C++ callback?

My JS script:

function test(testCallback)
{
   testCallback(5);
}

And my callback (C++):

void Test::testCallback(const qint32& value)
{
// Signal and other actions
emit testSignal(value);
// ...
}

Application won't use qml, but inherits some js functions from another project.

CKurdu

Hi,
You can send C++ callback function as an argument. Firstly, use QScriptEngine globalObject method to get QObject callback (your testCallback) and then use your test function with testCallback parameter.

    QScriptValue global = engine.globalObject();
    QScriptValue testCallback = global.property("Test").property("testCallback");
    QScriptValue test = global.property("test");
    QScriptValueList vals;
    vals<<testCallback<<23;
    QScriptValue result = test.call(global,vals);
    qDebug()<<"result : "<<result.toInt32()<<endl;