如何以编程方式将S/MIME证书应用于Outlook (Windows，C/C++)

#include <iostream>
#include <Windows.h>
#include <Ole2.h>
#include <OleCtl.h>

int main()
{
    // 初始化COM库
    CoInitialize(NULL);

    // 创建Outlook应用程序对象
    Outlook::_ApplicationPtr pApp;
    HRESULT hr = pApp.CreateInstance(__uuidof(Outlook::Application));
    if (FAILED(hr))
    {
        std::cout << "Failed to create Outlook application object." << std::endl;
        return 1;
    }

    // 获取当前用户的Outlook会话
    Outlook::_NameSpacePtr pNamespace = pApp->GetNamespace("MAPI");
    Outlook::_MAPIFolderPtr pFolder = pNamespace->GetDefaultFolder(Outlook::olFolderInbox);

    // 创建邮件项
    Outlook::_MailItemPtr pMailItem = pApp->CreateItem(Outlook::olMailItem);
    pMailItem->Subject = "Test Email";
    pMailItem->Body = "This is a test email.";

    // 启用S/MIME功能
    pMailItem->SetSMAPIEnabled(true);

    // 应用S/MIME证书
    pMailItem->SetSMIMECertificate("path_to_certificate");

    // 发送邮件
    pMailItem->Send();

    // 释放COM资源
    pMailItem.Release();
    pFolder.Release();
    pNamespace.Release();
    pApp.Release();
    CoUninitialize();

    return 0;
}