Qt 无法将QAbstractListModel对象作为一个类'；s属性

我的代码如下所示：

class Wrapper: public QObject {
  Q_OBJECT
  Q_PROPERTY(PeopleListModel & list READ list)
public:
  PeopleListModel & list() {
    return list_;
  }  

private:
  PeopleListModel list_;  
};

PeopleListModel是QAbstractListModel的一个子类

但我得到了编译错误：

       ^
In file included from plugin.cpp:131:0:
plugin.moc: In member function ‘virtual int Wrapper::qt_metacall(QMetaObject::Call, int, void**)’:
plugin.moc:184:52: error: cannot declare pointer to ‘class PeopleListModel&’
         case 0: *reinterpret_cast< PeopleListModel&*>(_v) = list(); break;
                                                    ^
In file included from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qnamespace.h:45:0,
                 from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qobjectdefs.h:45,
                 from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qobject.h:48,
                 from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qplugin.h:45,
                 from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtQml/qqmlextensionplugin.h:45,
                 from ../../../../Qt5.2.0/5.2.0/gcc_64/include/QtQml/QQmlExtensionPlugin:1,
                 from plugin.cpp:1:
../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qabstractitemmodel.h: In member function ‘PeopleListModel& PeopleListModel::operator=(const PeopleListModel&)’:
../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qglobal.h:967:12: error: ‘QAbstractListModel& QAbstractListModel::operator=(const QAbstractListModel&)’ is private
     Class &operator=(const Class &) Q_DECL_EQ_DELETE;
            ^
../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qabstractitemmodel.h:479:5: note: in expansion of macro ‘Q_DISABLE_COPY’
     Q_DISABLE_COPY(QAbstractListModel)
     ^
plugin.cpp:32:7: error: within this context
 class PeopleListModel : public QAbstractListModel {
       ^
In file included from plugin.cpp:131:0:
plugin.moc: In member function ‘virtual int Wrapper::qt_metacall(QMetaObject::Call, int, void**)’:
plugin.moc:184:59: note: synthesized method ‘PeopleListModel& PeopleListModel::operator=(const PeopleListModel&)’ first required here 
         case 0: *reinterpret_cast< PeopleListModel&*>(_v) = list(); break;
                                                           ^
make: *** [plugin.o] Error 1

^
在plugin.cpp:131:0中包含的文件中：
plugin.moc:在成员函数“virtual int Wrapper:：qt_metacall（QMetaObject:：Call，int，void**）”中：
plugin.moc:184:52:错误：无法声明指向“类PeopleListModel&”的指针
案例0:*重新解释cast（\u v）=list（）；打破
^
在../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qnamespace.h:45:0中包含的文件中，
从../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qobjectdefs.h:45，
从../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qobject.h:48，
从../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qplugin.h:45，
来自../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtQml/qqmlextensionplugin.h:45，
来自../../../../../Qt5.2.0/5.2.0/gcc_64/include/QtQml/QQmlExtensionPlugin:1，
来自plugin.cpp:1：
../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qabstractitemmodel.h:在成员函数“PeopleListModel&PeopleListModel:：operator=（const PeopleListModel&）”中：
../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qglobal.h:967:12:错误：“QAbstractListModel和QAbstractListModel:：operator=（const QAbstractListModel&）”是私有的
类和运算符=（常量类和）Q_DECL_EQ_DELETE；
^
../../../../Qt5.2.0/5.2.0/gcc_64/include/QtCore/qabstractemmodel.h:479:5:注意：在宏“Q_DISABLE_COPY”的展开中
Q_禁用_复制（QAbstractListModel）
^
plugin.cpp:32:7:错误：在此上下文中
类PeopleListModel:PublicQAbstractListModel{
^
在plugin.cpp:131:0中包含的文件中：
plugin.moc:在成员函数“virtual int Wrapper:：qt_metacall（QMetaObject:：Call，int，void**）”中：
plugin.moc:184:59:注意：这里首先需要合成方法'PeopleListModel&PeopleListModel:：operator=（const-PeopleListModel&'）
案例0:*重新解释演播（\u v）=list（）；中断；
^
make:**[plugin.o]错误1

尝试将属性声明为对象，而不是引用。引用应立即初始化，可能moc某处不会初始化。属性也应为可复制类。而

Q\u禁用复制（QAbstractListModel）

宏（

QAbstractListModel

-您的

PeopleListModel

的基类）不允许这样做。我首先使用属性而不是引用，但仍然得到上面的错误。我只想将一个类的属性公开给QML，这个属性（这里是一个listmodel）可以向qml上的my listview提供数据。复制遗留问题仍然存在。Moc尝试为您的属性赋值，并使用运算符=。这是

Q\u DISABLE\u COPY

宏的私人原因。它将与指针（

PeopleListModel*list；

）一起工作。