Using QScriptEngine with a "native function" call... QT Example... fails: "no matching function for call to 'QScriptEngine::newFunction' "?

Question

I am using an example provide by Qtcreator and getting this error... ??

enter image description here

void MainWindow::hBtn
{
    QScriptEngine e;

    QScriptValue fun = e.newFunction(myAdd);  // ERROR: No matching function...
    e.globalObject().setProperty("myAdd", fun);

    QScriptValue result = e.evaluate("myAdd(myNumber, 1)");
}


QScriptValue myAdd(QScriptContext *context, QScriptEngine *engine)
//also tried:  QScriptValue MainWindow::myAdd(QScriptContext *context, QScriptEngine *engine) //fails as well with same ERROR
{
   QScriptValue a = context->argument(0);
   QScriptValue b = context->argument(1);
   return a.toNumber() + b.toNumber();
}

Example: http://harmattan-dev.nokia.com/docs/library/html/qt4/qscriptengine.html

scroll down to "Native Functions"

Looked through another user having problems with no solution either: Using a member function with QScriptEngine::newFunction

j4nSolo · Answer 1 · 2013-08-08T15:25:31.540

0

Try it with an int for the second parameter. QScriptValue is not int related.

Edit: Ok, just realized that there is another possible combination using QScriptValue, but you may have to pass also an int and make fun a constant.

Hope it helps.

edited Aug 08 '13 at 15:25

answered Aug 08 '13 at 15:11

j4nSolo

342
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I tried another QTCreator example... issue is with engine.newFunction() ... ?? – jdl Aug 08 '13 at 15:42
I can't help you with that. I would have to test it but I can't. Nevertheless, did you try to fulfill the parameter combinations as I suggested? – j4nSolo Aug 09 '13 at 06:25

score 0 · Accepted Answer · edited May 23 '17 at 12:05

0

Used as basis: Pass member function pointer in C++

I took the "myAdd" declaration out of the header class... problem solved.

edited May 23 '17 at 12:05

Community

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answered Aug 08 '13 at 16:12

jdl

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Using QScriptEngine with a "native function" call... QT Example... fails: "no matching function for call to 'QScriptEngine::newFunction' "?

2 Answers2