error using Q_OBJECT

[Ossi]

Hi all.

I have to use the tr() function so i include the Q_OBJECT macro in my class declaration. But when I compile I get the errors:

debug/moc_xmlread.cpp:39: error: ‘staticMetaObject’ is not a member of ‘QXmlDefaultHandler’
debug/moc_xmlread.cpp: In member function ‘virtual void* XmlRead::qt_metacast(const char*)’:
debug/moc_xmlread.cpp:53: error: ‘qt_metacast’ is not a member of ‘QXmlDefaultHandler’
debug/moc_xmlread.cpp: In member function ‘virtual int XmlRead::qt_metacall(QMetaObject::Call, int, void**)’:
debug/moc_xmlread.cpp:58: error: ‘qt_metacall’ is not a member of ‘QXmlDefaultHandler’

debug/moc_xmlread.cpp:39: error: ‘staticMetaObject’ is not a member of ‘QXmlDefaultHandler’
debug/moc_xmlread.cpp: In member function ‘virtual void* XmlRead::qt_metacast(const char*)’:
debug/moc_xmlread.cpp:53: error: ‘qt_metacast’ is not a member of ‘QXmlDefaultHandler’
debug/moc_xmlread.cpp: In member function ‘virtual int XmlRead::qt_metacall(QMetaObject::Call, int, void**)’:
debug/moc_xmlread.cpp:58: error: ‘qt_metacall’ is not a member of ‘QXmlDefaultHandler’

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My header file:

class XmlRead : public QXmlDefaultHandler
{
    Q_OBJECT
 
public:
    XmlRead(std::map<QDate, std::vector<double> > &myMap, std::vector<QString> &profile);
 
    bool startElement(const QString &namespaceURI,
                      const QString &localName,
                      const QString &qName,
                      const QXmlAttributes &attribs);
    bool endElement(const QString &namespaceURI,
                    const QString &loacalName,
                    const QString &qName);
    bool characters(const QString &str);
    bool fatalError(const QXmlParseException &exception);
 
private:
    std::map<QDate, std::vector<double> > *mapPtr;
    std::vector<QString> *profilePtr;
    QString currentText;
    std::vector<double> vec;
    bool validDate;
    QDate myDate;
};

class XmlRead : public QXmlDefaultHandler
{
    Q_OBJECT

public:
    XmlRead(std::map<QDate, std::vector<double> > &myMap, std::vector<QString> &profile);

    bool startElement(const QString &namespaceURI,
                      const QString &localName,
                      const QString &qName,
                      const QXmlAttributes &attribs);
    bool endElement(const QString &namespaceURI,
                    const QString &loacalName,
                    const QString &qName);
    bool characters(const QString &str);
    bool fatalError(const QXmlParseException &exception);

private:
    std::map<QDate, std::vector<double> > *mapPtr;
    std::vector<QString> *profilePtr;
    QString currentText;
    std::vector<double> vec;
    bool validDate;
    QDate myDate;
};

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If I remove the Q_OBJECT macro the compiler cant find the tr() function... What am I doing wrong?

[scascio]

the Q_OBJECT macro is reserved for derived class of QObject.
Are your sur it is the case of QXmlDefaultHandler?

You can use QObject::tr() without derivation, since it is a static method.

[Lykurg]

use

#include <QObject>

#include <QObject>

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instead of the macro.

[Ossi]

Thanks guys, I included QObject and used QObject::tr and it works