如何在QT中处理c# COM事件

我有一个简单的c# COM可见库，看起来像这样:

namespace MyEventClassLibrary {
[Guid("0ab09e18-bf85-48c8-a45d-a0cebed77a5c")]
public interface ICalculator
{
    int Add(int Num1, int Num2);
}
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
[Guid("9e09b634-8c1a-4926-83b2-f6f988595c85")]
public interface ICalculatorEvents
{
    [DispId(1)]
    void Completed(int Result);
}
[ClassInterface(ClassInterfaceType.None)]
[ComSourceInterfaces(typeof(ICalculatorEvents))]
[Guid("6cebc4db-2e8f-4e24-91a5-24ffdf97fc6a")]
public class Calculator : ICalculator
{
    [ComVisible(false)]
    public delegate void CompletedDelegate(int result);
    public event CompletedDelegate Completed;
    public int Add(int Num1, int Num2)
    {
        int Result = Num1 + Num2;
        if (Completed != null)
            Completed(Result);
        return Result;
    }
}}

我注册了它，并将。tlb导入QT:

TYPELIBS = ..'MyEventClassLibrary'MyEventClassLibrary'bin'Debug'MyEventClassLibrary.tlb

和mainwindow.cpp文件如下:

#include <QDebug>
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "myeventclasslibrary.h" 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    MyEventClassLibrary::Calculator eventClass;
    connect(&eventClass, SIGNAL(Completed()), this, SLOT(test()));
    qDebug() << eventClass.Add(1,2);
}
void MainWindow::test()
{
    qDebug() << "Here";
}
MainWindow::~MainWindow()
{
    delete ui;
}

当我在QT中构建项目时，我得到了40多个问题:

MyEventClassLibrary.h:144: error: C2535: 'MyEventClassLibrary::CompletedDelegate::CompletedDelegate(void)': member function already defined or declared

和

MyEventClassLibrary.h:147: error: C2065: 'iface': undeclared identifier

上述问题已通过向委托添加[ComVisible(false)]得到解决(更多信息请参阅注释)

当我运行代码时，我得到一个错误:

QObject::connect: No such signal MyEventClassLibrary::Calculator::Completed()

我的问题是，你如何处理事件/委托在COM和QT?

作为背景信息，QT文档说:

如果COM对象实现了IDispatch接口，那么该对象的属性、方法和事件就可以作为Qt属性、插槽和信号使用。

，我使用了以下资源和研究:

在c++中处理c# COM事件

如何在托管代码中放置IDispatch*

如何在c++中触发c# COM事件?

等等;请帮助!