以 C++ 具現化的憑證註冊控制項

下列 C++ 範例會初始化 COM、建立 憑證註冊控制項的實例、使用憑證註冊控制，以及釋放資源。

C++ 中的範例

下列範例會建立 憑證註冊控制項 的實例，並顯示 MyStoreName 屬性的值。 此範例使用 ICEnroll4 介面。

#include <windows.h>
#include <stdio.h>
#include <xenroll.h>

// Copyright (C) Microsoft.  All rights reserved.
HRESULT __cdecl main(void)
{
    HRESULT hr = 0;
    ICEnroll4 *pEnroll = NULL;
    BSTR bstrStoreName = NULL;

    // Initialize COM.
    hr = CoInitializeEx( NULL, COINIT_APARTMENTTHREADED );
    if ( FAILED( hr ) )
    {
        printf("Failed CoInitializeEx - [0x%x]\n", hr);
        exit(hr);
    }

    // Create an instance of the object.
    hr = CoCreateInstance( __uuidof(CEnroll),
                           NULL,
                           CLSCTX_INPROC_SERVER,
                           __uuidof(ICEnroll4),
                           (void **)&pEnroll);
    if ( FAILED( hr ) )
    {
        printf("Failed CoCreateInstance - pEnroll [0x%x]\n", hr);
        exit(hr);
    }

    hr = pEnroll->get_MyStoreName(&bstrStoreName);
    if (SUCCEEDED(hr))
    {
        printf("The value of MyStoreName is %ws\n", bstrStoreName);
    }
    else
    {
        printf("pEnroll->GetMyStoreName failed: 0x%x\n", hr);
    }

    pEnroll->Release();
    SysFreeString(bstrStoreName);
    CoUninitialize();

    return hr;
}