我的应用程序需要同时使用Qt 3D和QCustomPlot库。但是，在尝试使用.pro文件中的“QT + = 3dinput”在项目中编译QCustomPlot时，会出现几个引用QMouseEvent和QWheelEvent类的错误。
我认为这与Qt3DInput在QtGui模块中引入与QMouseEvent和QWheelEvent具有相同名称的类有关，但我对Qt的内部工作方式不够熟悉，无法理解编译错误试图告诉我。
究竟是什么导致了这个问题，我该如何解决这个问题？对.pro文件或QCustomPlot库本身的修改都是可以接受的。
要演示此问题，请使用以下.pro文件编译QCustomPlot：
QT += widgets printsupport 3dinput
TEMPLATE = lib
SOURCES += qcustomplot.cpp
HEADERS += qcustomplot.h
导致这些错误：
In file included from C:/Qt/5.7/mingw53_32/include/QtCore/qnamespace.h:43:0,
from C:/Qt/5.7/mingw53_32/include/QtCore/qobjectdefs.h:48,
from C:/Qt/5.7/mingw53_32/include/QtCore/qobject.h:46,
from C:/Qt/5.7/mingw53_32/include/QtCore/QObject:1,
from debug\../../QCustomPlot/qcustomplot.h:29,
from debug\moc_qcustomplot.cpp:9:
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h: In instantiation of 'constexpr int qMetaTypeId() [with T = QMouseEvent*]':
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1752:26: required from 'constexpr int qRegisterMetaType() [with T = QMouseEvent*]'
debug\moc_qcustomplot.cpp:2512:84: required from here
C:/Qt/5.7/mingw53_32/include/QtCore/qglobal.h:746:47: error: static assertion failed: Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system
#define Q_STATIC_ASSERT_X(Condition, Message) static_assert(bool(Condition), Message)
^
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1745:5: note: in expansion of macro 'Q_STATIC_ASSERT_X'
Q_STATIC_ASSERT_X(QMetaTypeId2<T>::Defined, "Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system");
^
In file included from C:/Qt/5.7/mingw53_32/include/QtCore/qobject.h:54:0,
from C:/Qt/5.7/mingw53_32/include/QtCore/QObject:1,
from debug\../../QCustomPlot/qcustomplot.h:29,
from debug\moc_qcustomplot.cpp:9:
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h: In instantiation of 'static constexpr int QMetaTypeId2<T>::qt_metatype_id() [with T = QMouseEvent*]':
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1746:43: required from 'constexpr int qMetaTypeId() [with T = QMouseEvent*]'
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1752:26: required from 'constexpr int qRegisterMetaType() [with T = QMouseEvent*]'
debug\moc_qcustomplot.cpp:2512:84: required from here
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1604:96: error: 'qt_metatype_id' is not a member of 'QMetaTypeId<QMouseEvent*>'
static inline Q_DECL_CONSTEXPR int qt_metatype_id() { return QMetaTypeId<T>::qt_metatype_id(); }
^
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1604:100: error: body of constexpr function 'static constexpr int QMetaTypeId2<T>::qt_metatype_id() [with T = QMouseEvent*]' not a return-statement
static inline Q_DECL_CONSTEXPR int qt_metatype_id() { return QMetaTypeId<T>::qt_metatype_id(); }
^
In file included from C:/Qt/5.7/mingw53_32/include/QtCore/qnamespace.h:43:0,
from C:/Qt/5.7/mingw53_32/include/QtCore/qobjectdefs.h:48,
from C:/Qt/5.7/mingw53_32/include/QtCore/qobject.h:46,
from C:/Qt/5.7/mingw53_32/include/QtCore/QObject:1,
from debug\../../QCustomPlot/qcustomplot.h:29,
from debug\moc_qcustomplot.cpp:9:
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h: In instantiation of 'constexpr int qMetaTypeId() [with T = QWheelEvent*]':
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1752:26: required from 'constexpr int qRegisterMetaType() [with T = QWheelEvent*]'
debug\moc_qcustomplot.cpp:2540:84: required from here
C:/Qt/5.7/mingw53_32/include/QtCore/qglobal.h:746:47: error: static assertion failed: Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system
#define Q_STATIC_ASSERT_X(Condition, Message) static_assert(bool(Condition), Message)
^
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1745:5: note: in expansion of macro 'Q_STATIC_ASSERT_X'
Q_STATIC_ASSERT_X(QMetaTypeId2<T>::Defined, "Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system");
^
In file included from C:/Qt/5.7/mingw53_32/include/QtCore/qobject.h:54:0,
from C:/Qt/5.7/mingw53_32/include/QtCore/QObject:1,
from debug\../../QCustomPlot/qcustomplot.h:29,
from debug\moc_qcustomplot.cpp:9:
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h: In instantiation of 'static constexpr int QMetaTypeId2<T>::qt_metatype_id() [with T = QWheelEvent*]':
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1746:43: required from 'constexpr int qMetaTypeId() [with T = QWheelEvent*]'
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1752:26: required from 'constexpr int qRegisterMetaType() [with T = QWheelEvent*]'
debug\moc_qcustomplot.cpp:2540:84: required from here
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1604:96: error: 'qt_metatype_id' is not a member of 'QMetaTypeId<QWheelEvent*>'
static inline Q_DECL_CONSTEXPR int qt_metatype_id() { return QMetaTypeId<T>::qt_metatype_id(); }
^
C:/Qt/5.7/mingw53_32/include/QtCore/qmetatype.h:1604:100: error: body of constexpr function 'static constexpr int QMetaTypeId2<T>::qt_metatype_id() [with T = QWheelEvent*]' not a return-statement
static inline Q_DECL_CONSTEXPR int qt_metatype_id() { return QMetaTypeId<T>::qt_metatype_id(); }
^
这显然是使用MinGW，但VC ++会产生类似的错误。