Touble calling a simple c++ function in QML

xalam

I am new to Qt/Qml and want to integrate C++ class into qml project. I want to use a method SquareIt() from Qml from a class Calculator. Here is the class I wrote

@#ifndef CALCULATOR_H
#define CALCULATOR_H

#include <QObject>

class Calculator : public QObject
{
Q_OBJECT
public:
explicit Calculator(QObject *parent = 0);

Q_INVOKABLE int SqaureIt(int a);

signals:

public slots:

};

#endif // CALCULATOR_H
@

Here is how I am binding them. Note I didn't find any example which binds with QQmlApplicationEngine, is that a problem?

@#include <QGuiApplication>
#include <QQmlApplicationEngine>

#include "calculator.h"

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

QQmlApplicationEngine engine;

Calculator calc;

engine.setProperty("TheCalc", &calc);

engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

return app.exec();

}@

I get error:

@C:\Users...\My Qt Projects\Load\main.cpp:14: error: C2248: 'QVariant::QVariant' : cannot access private member declared in class 'QVariant'@

SGaist

Hi,

It should rather be:

@engine.rootContext()->setContextProperty("TheCalc", &calc);@

Hope it helps