c++ - 使用 IOpenServiceManager::InstallService 设置 IE 的默认搜索引擎提供程序

Question

我想用 IOpenServiceManager::InstallService 设置 IE 的默认搜索引擎提供程序:

1. 属于链接http://www.opensearch.org/Specifications/OpenSearch/1.1#OpenSearch_description_elements .我这样创建了 SearchProviderInfo.xml:

   <?xml version="1.0" encoding="UTF-8"?>
    <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
      <ShortName>Web Search</ShortName>
      <Description>Use Example.com to search the Web.</Description>
      <Tags>example web</Tags>
      <Contact>admin@example.com</Contact>
      <Url type="application/atom+xml"
           template="http://example.com/?q={searchTerms}&pw={startPage?}&format=atom"/>
      <Url type="application/rss+xml"
           template="http://example.com/?q={searchTerms}&pw={startPage?}&format=rss"/>
      <Url type="text/html" 
           template="http://example.com/?q={searchTerms}&pw={startPage?}"/>
      <LongName>Example.com Web Search</LongName>
      <Image height="64" width="64" type="image/png">http://example.com/websearch.png</Image>
      <Image height="16" width="16" type="image/vnd.microsoft.icon">http://example.com/websearch.ico</Image>
      <Query role="example" searchTerms="cat" />
      <Developer>Example.com Development Team</Developer>
      <Attribution>
        Search data Copyright 2005, Example.com, Inc., All Rights Reserved
      </Attribution>
      <SyndicationRight>open</SyndicationRight>
      <AdultContent>false</AdultContent>
      <Language>en-us</Language>
      <OutputEncoding>UTF-8</OutputEncoding>
      <InputEncoding>UTF-8</InputEncoding>
    </OpenSearchDescription>
   

2. Belong to the link http://msdn.microsoft.com/en-us/library/cc849088%28v=vs.85%29.aspx. I create the project "SetDefaultHelper" like this:

       #include <windows.h>    #include <atlbase.h>    #include <wininet.h>    #include <urlmon.h>    #include <string>    #include "openservice.h"        #pragma comment(lib, "urlmon.lib")void DisplayUsage(){    wprintf(L"\r\nSetDefaultHelper.exe -- Call SetDefault API on a search provider");    wprintf(L"\r\n");    wprintf(L"\r\nUSAGE: SetDefaultHelper.exe <option>");    wprintf(L"\r\n");    wprintf(L"\r\nOptions (these are mutually exclusive!):");    wprintf(L"\r\n");    wprintf(L"\r\n    /guid <guid>      GUID of an installed search provider");    wprintf(L"\r\n    /url <url>        URL of an OpenSearch Description file");    wprintf(L"\r\n");}int __cdecl wmain(__in int argc, __in_ecount(argc) WCHAR* argv[]){    HRESULT hr = E_FAIL;    BOOL fComInitialized = FALSE;        if (3 != argc)    {         DisplayUsage();    }    else if (SUCCEEDED(CoInitialize(NULL)))    {        fComInitialized = TRUE;        CComPtr<IOpenServiceManager> spManager;        hr = spManager.CoCreateInstance(CLSID_OpenServiceManager);            if (SUCCEEDED(hr))        {            CComPtr<IOpenService> spService;                if (0 == _wcsicmp(argv[1], L"/guid"))            {                // Get an IOpenService pointer from the GUID.                WCHAR szEscaped[INTERNET_MAX_URL_LENGTH] = L"";                DWORD cchEscaped = ARRAYSIZE(szEscaped);                hr = UrlEscape(argv[2], szEscaped, &cchEscaped, URL_ESCAPE_SEGMENT_ONLY);                    if (SUCCEEDED(hr))                {                                            std::wstring wsOsid(L"x-osid:1:search:");                    wsOsid += szEscaped;                    hr = spManager->GetServiceByID(wsOsid.c_str(), &spService);                }              }            else if (0 == _wcsicmp(argv[1], L"/url"))            {                // Install the provider to get an IOpenService pointer.                //CComPtr<IUri> spUri;                //hr = CreateUri(argv[2], 0, 0, &spUri);                //if (SUCCEEDED(hr))                //{                    hr = spManager->InstallService(argv[2], &spService);                //}            }            else            {                DisplayUsage();                hr = E_FAIL;            }
           if (SUCCEEDED(hr))
           {
               hr = spService-&#62;SetDefault(TRUE, NULL);
           }
       }
   }  
   
   if (fComInitialized)
   {
       CoUninitialize();
   }
   
   return hr;
   }

3. 我构建的项目没问题。文件 SetDefaultHelper.exe 和 SearchProviderInfo.xml 都是同一个文件夹。在项目设置中，设置 Configuration Properties > Debugging > Commands Arguments =/url absolutePaht/searchProvider.xml。然后运行调试 (F10)，在“hr = CreateUri(argv[2], 0, 0, &spUri);”行，结果 hr 太奇怪了。我不知道为什么。你能帮帮我吗？

非常感谢。

[已解决]:
1.不需要CreateUri//commented
2. 使用绝对路径。

Answer 1

使用绝对路径和UrlCreateFromPath创建一个类似file:///的URL，将该URL传递给InstallService。

之间，看来你的XML有错误。

            WCHAR szURL[MAX_PATH] = L"";
            DWORD cchURL = ARRAYSIZE(szURL);
            hr = ::UrlCreateFromPath(argv[2], szURL, &cchURL, 0);
            if (SUCCEEDED(hr))
            {
                hr = spManager->InstallService(argv[2], &spService);

                // Now we can set it as the default.
                if (SUCCEEDED(hr))
                {
                    hr = spService->SetDefault(TRUE, NULL);
                    if (hr == OS_E_CANCELLED)
                    {
                        hr = E_ACCESSDENIED;  // by the user!
                    }
                }
            }