string qt Qml

i want to pass Qstring from c++ file to Qml how i can give

class file....

Code:

---

#ifndef MYDEVICE_H
#define MYDEVICE_H
 
#include <QObject>
#include <QScreen>
#include <QtGui/QGuiApplication>
#include <QQmlApplicationEngine>
#ifdef Q_OS_ANDROID
#include <QtAndroidExtras>
#endif
 
//#include <QTcpSocket>
#include <QUdpSocket>
 
 
class MyDevice : public QObject
{
    Q_OBJECT
 
 
 
public:
    explicit MyDevice(QObject *parent = 0);
    ~MyDevice();
 
 
private:
    bool m_isMobile;
    QScreen *m_screen;
    int m_dpi;
    qreal m_dp;
   // QTcpSocket * socket;
    QUdpSocket *socket;
    QByteArray m_bWriteArray;
    QByteArray m_bReadArray;
    const char *m_np1;
    QStringList myStringList;
    QString m_sdatastring;
    QString m_srequestString;
 
public slots:
    void connected();
    void disconnected();
    void hostFound();
    void bytesWritten(qint64 bytes);
    void readyRead();
    void error(QAbstractSocket::SocketError socketError);
};
 
#endif // MYSCREEN_H

---

m_bWriteArray variable to xml....


Qml code

Code:

---

XmlListModel
    {
        id: model
        source:"qrc:/Sample_BCID_INFO.xml" //  here i want to give QString here
        query: "/BCINFO/BC"
        XmlRole
        {
            name: "LABEL";
            query: "LABEL/string()"
        }
    }
    ListView
    {
        id: listViewMenu
        anchors.top: logoWtapper.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        clip: true
        model: model
        delegate: componentDelegate
    }

---

instead of ths "qrc:/Sample_BCID_INFO.xml" i want to give m_sdatastring

You need to use the XmlListModel's "xml" property for string based content, "source" needs an URL.

If you have access to a MyDevice object from QML then the easiest way to get access to the m_sdatastring member is to add a Q_PROPERTY using the MEMBER access variation.

Cheers,
_

functions are acessable but variables are not acessable....

Hence the Q_PROPERTY to make them accessible

Cheers,
_