Exposing a Qt container property to QtScript, READ and WRITE

[SingleMalt]

I am attempting to expose a Q_PROPERTY that references a Qt container to QtScript, that allows for both reading from the container and writing to the container. According to all the Qt documentation, this should be possible. I have spent a week trying everything I can think of, and searching this forum and the whole of the Google index to no avail. There are several similar threads on this forum, but none answer the question, really.

Everything I have tried allows the script to see the values in the container, but not alter the values in that container. Even the QtScript Debugger sees the values, but cannot modify them interactively.

Minimal, compilable code follows:

myclass.h (inlined for ease of posting)

class MyClass : public QObject
{
	Q_OBJECT
	Q_PROPERTY(QStringList strings READ getStrings WRITE setStrings);
 
public:
	MyClass() { strings << "abc" << "def" << "ghi" << "jkl"; };
	~MyClass() {};
 
	QStringList getStrings() const { return strings; };
 
public slots:
	void setStrings(const QStringList& list) { strings = list; };
 
private:
	QStringList strings;
};

class MyClass : public QObject
{
	Q_OBJECT
	Q_PROPERTY(QStringList strings READ getStrings WRITE setStrings);

public:
	MyClass() { strings << "abc" << "def" << "ghi" << "jkl"; };
	~MyClass() {};

	QStringList getStrings() const { return strings; };

public slots:
	void setStrings(const QStringList& list) { strings = list; };

private:
	QStringList strings;
};

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main.cpp

#include "myclass.h"
 
Q_DECLARE_METATYPE(QStringList);
 
int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);
 
	QScriptEngine *scriptEngine = new QScriptEngine;
	qScriptRegisterSequenceMetaType<QStringList>(scriptEngine);
 
	MyClass *myclass = new MyClass();
	QScriptValue value = scriptEngine->newQObject(myclass);
	scriptEngine->globalObject().setProperty("AAA", value);
 
	qDebug("Before: " + myclass->getStrings().join("~").toAscii());
 
	scriptEngine->evaluate("AAA.strings[1] = 'xxx';");
 
	qDebug("After : " + myclass->getStrings().join("~").toAscii());
}

#include "myclass.h"

Q_DECLARE_METATYPE(QStringList);

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);

	QScriptEngine *scriptEngine = new QScriptEngine;
	qScriptRegisterSequenceMetaType<QStringList>(scriptEngine);

	MyClass *myclass = new MyClass();
	QScriptValue value = scriptEngine->newQObject(myclass);
	scriptEngine->globalObject().setProperty("AAA", value);

	qDebug("Before: " + myclass->getStrings().join("~").toAscii());

	scriptEngine->evaluate("AAA.strings[1] = 'xxx';");

	qDebug("After : " + myclass->getStrings().join("~").toAscii());
}

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Output:

Before: abc~def~ghi~jkl
After : abc~def~ghi~jkl

Before: abc~def~ghi~jkl
After : abc~def~ghi~jkl

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There is something obvious I am missing, but for the life of me, I can't figure it out. This is not limited to the QStringList container, I cannot WRITE to QVector, QList, QMap, or any other Qt containers.

Another hint: A breakpoint that is put on the "setStrings" method is never triggered, indicating to me that something is wrong with my syntax, in that the script engine has not been instructed properly to bind with my WRITE method.

I have also tried using the "qScriptRegisterMetaType" approach, and defining my own methods for converting the QStringList to and from QScriptValue, but that has not been successful either.

Representative threads (there are many) where this same topic has gone unanswered:
http://www.qtcentre.org/threads/6540...signer-plugins
http://www.qtcentre.org/threads/2522...Y-of-type-QMap

Any pointers are appreciated.