Question

在使PrimitivePartsWrapper成为QObject的子类（包括Q_OBJECT宏）后，我似乎无法动摇此错误。

undefined reference to `vtable for PrimitivePartsWrapper` (in register.o)

我运行了qmake，moc_primitive.cpp包含在makefile中。它似乎只发生在Qt创建者身上。如果我在命令行上运行make，程序会编译但是我的嵌入式python中的错误无法找到PrimitiveParts类，这可能是无关的。 QtCreator中的错误是否与register.o有关而不是primitive.o？还是moc_primitive.o？

primitive.h：

#ifndef PRIMITIVE_H
#define PRIMITIVE_H

#include "util.h"

class PrimitiveParts {
public:
    QVector<Point3> points;
    QVector<QList<int> > faces;
};

class PrimitivePartsWrapper : public QObject
{
    Q_OBJECT
public slots:
    PrimitiveParts* new_PrimitiveParts();
};

namespace primitive {
    PrimitiveParts cubePrimitive(float width, float height, float depth);
};


#endif // PRIMITIVE_H

primitive.cpp：

#include "primitive.h"

PrimitiveParts* PrimitivePartsWrapper::new_PrimitiveParts()
{
    return new PrimitiveParts();
}

namespace primitive {
    PrimitiveParts cubePrimitive(float width, float height, float depth)
    {
        float hx = width / 2;
        float hy = height / 2;
        float hz = depth / 2;

        // create the vertices
        Point3 p0(hx,hy,hz);
        Point3 p1(hx,hy,-hz);
        Point3 p2(-hx,hy,-hz);
        Point3 p3(-hx,hy,hz);
        Point3 p4(hx,-hy,hz);
        Point3 p5(hx,-hy,-hz);
        Point3 p6(-hx,-hy,-hz);
        Point3 p7(-hx,-hy,hz);

        QList<int> f0 = QList<int>() << 0 << 1 << 2 << 3;
        QList<int> f1 = QList<int>() << 4 << 5 << 1 << 0;
        QList<int> f2 = QList<int>() << 6 << 2 << 1 << 5;
        QList<int> f3 = QList<int>() << 7 << 3 << 2 << 6;
        QList<int> f4 = QList<int>() << 7 << 4 << 0 << 3;
        QList<int> f5 = QList<int>() << 4 << 7 << 6 << 5;

        struct PrimitiveParts parts;
        parts.points = QVector<Point3>() << p0 << p1 << p2 << p3 << p4 << p5 << p6 << p7;
        parts.faces = QVector<QList<int> >() << f0 << f1 << f2 << f3 << f4 << f5;
        return parts;
    }
};

Answer 1

您没有提供所有代码，但无论如何都要尝试清理项目，重新运行qmake并重建所有代码。

QObject创建moc文件，但仍然会出现vtable错误

1 个答案: