CODEWITHSUNDEEP
c++qt
John
John

Reputation: 2326

undefined symbols on qml extension (from example)

I'm trying to adapt a simple example from qt (Using qt creator 3.5.1, from qt 5.5.1) to create a new qml type. Here's the trivial new type:

class Person : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName)
    Q_PROPERTY(int shoeSize READ shoeSize WRITE setShoeSize)
public:
    Person(QObject *parent = 0): QObject(parent), m_shoeSize(0) {}

    QString name() const { return m_name; }
    void setName(const QString & name) { m_name = name; }

    int shoeSize() const { return m_shoeSize; }
    void setShoeSize(int s) { m_shoeSize = s; }

private:
    QString m_name;
    int m_shoeSize;
};

When I try to register it:

qmlRegisterType<Person>("People", 1,0, "Person");

I get

Undefined symbols for architecture x86_64:
"Person::qt_metacall(QMetaObject::Call, int, void**)", referenced from: vtable for QQmlPrivate::QQmlElement in main.o "Person::qt_metacast(char const*)", referenced from: ...

I think I need to add a "library" to the .pro file, but I'm at a loss. Any ideas?

I already have the following:

QT += core qml quick widgets

Upvotes: 0

Views: 1160

Answers (1)

John
John

Reputation: 2326

As suggested by tpr: The example had Person in a separate .h/.cpp file. When I did that, the program successfully compiled. Did not expect that.

Upvotes: 1

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