用Shell获取windows文件的详细信息

static bool GetInfoFromWindows(wchar_t* szFilePath)
{
IShellFolder * psfDesktop = NULL;//用来定位某个文件夹，并对此文件夹下的文件和文件夹进行操作
IShellFolder2* psf2Desktop = NULL;//从IShellFolder借口继承，提供了一些新的功能（即扩展属性，如作者）。
//Shell的基础是桌面，桌面可看做任何文件夹的父类
if(NOERROR != SHGetDesktopFolder(&psfDesktop))
return false;
psfDesktop->QueryInterface(IID_IShellFolder2,(void**)&psf2Desktop);
psfDesktop->Release();

LPITEMIDLIST pTargetPathID;//ITEMIDLIST，每个文件或文件夹都维护自己的ItemIDList，里面记录了它们的所有属性。
//一个文件夹下的文件会形成有序的链表，即EnumIDList，对这个链表进行遍历即可找到所有的文件信息。
IShellFolder2* psf2Folder = NULL;
//定位到文件所在文件夹
int iFolderLength = _tcsrchr(szFilePath,_T('\\')) != NULL ? _tcsrchr(szFilePath,_T('\\')) - szFilePath : -1;
if(iFolderLength <= 0)
return false;
wchar_t szFolder[128] = _T("");
_tcsncpy(szFolder,szFilePath,iFolderLength);
if(S_OK != psfDesktop->ParseDisplayName(NULL,NULL,szFolder,NULL,&pTargetPathID,NULL))
return false;

HRESULT hr2;
if(S_OK != (hr2 = psf2Desktop->BindToObject(pTargetPathID,NULL,IID_IShellFolder2,(void**)&psf2Folder)))
return false;
/*LPCITEMIDLIST pidlRelative = NULL;
if(S_OK == SHGetFolderLocation (NULL, CSIDL_MYMUSIC,NULL,NULL, &pTargetPathID))
{
if(S_OK !=  SHBindToParent(pTargetPathID,IID_IShellFolder,(void**)&psf2Folder,&pidlRelative))
return false;
}*/

// 	if ((SUCCEEDED (SHGetDesktopFolder(&pDesktop))) &&
// 		(SUCCEEDED (SHGetSpecialFolderLocation (m_hWnd, CSIDL_BITBUCKET, &pidlRecycleBin))))
// 	{
// 		if (SUCCEEDED (pDesktop->BindToObject(pidlRecycleBin, NULL, IID_IShellFolder2, (LPVOID *)&m_pFolder2)))
// 		{
//
// 		}
// 	}

LPENUMIDLIST pEnum;
if(S_OK != psf2Folder->EnumObjects(NULL,SHCONTF_NONFOLDERS,&pEnum))
return false;

STRRET retFile;
wchar_t szFilename[128] = _T("");
LPITEMIDLIST pFileItemID;
ULONG uEleFetched = 0;
while(pEnum->Next(1,&pFileItemID,&uEleFetched) == S_OK)
{
ZeroMemory(szFilename,128);
//按照完成文件名格式获得文件名
psf2Folder->GetDisplayNameOf(pFileItemID,SHGDN_FORPARSING,&retFile);
StrRetToBuf(&retFile,pFileItemID,szFilename,128);
if(0 == _tcsicmp(szFilename,szFilePath))
break;
}

//get title,column 21
//::CoInitialize(NULL);
SHELLDETAILS shDetail;
wprintf(L"中文\n");
for(int i=0;i<10000;++i)
{
HRESULT hr = psf2Folder->GetDetailsOf(pFileItemID,i,&shDetail);
if(hr == S_OK)
{
wchar_t szContent[128];
ZeroMemory(szContent,128);
StrRetToBuf(&(shDetail.str),pFileItemID,szContent,128);
_tprintf(_T("xxxx %d : %ls\n"), i,szContent);
}
}
//CoUninitialize();
return true;
}