也就是讀寫注冊表。
重裝系統總是忘記備份收藏夾，很郁悶。查了一下更改默認收藏夾的方法為修改注冊表，將
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders改為你想要的路徑即可。
決定用程序實現。代碼異常簡單。放上來作為RegOpenKeyEx的例子程序參考備用。
該段代碼根據一個開關，決定是否將舊的Favorites拷貝到新的路徑中。
1 CString strDisp;
2 TCHAR szDir[MAX_PATH] = {0}; // 要設定的Path
3 TCHAR szOldPath[MAX_PATH] = {0};
4
5 GetDlgItemText(IDC_EDIT_PATH,szDir,MAX_PATH);
6
7 BOOL bDir = PathIsDirectory(szDir);
8
9 if(bDir == FALSE)
10 {
11 strDisp.Format(_T("Please Select a Folder."));
12 SetDlgItemText(IDC_EDIT_PATH,strDisp);
13 return;
14 }
15
16 // Open Reg
17 HKEY hKey;
18 LONG lRtn = RegOpenKeyEx(HKEY_CURRENT_USER ,
19 _T("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders"),
20 0, KEY_ALL_ACCESS,
21 &hKey);
22
23 if(lRtn == ERROR_SUCCESS)
24 {
25 // Read old key
26 DWORD dwOldLen = MAX_PATH;
27 //DWORD dwReserved;
28 DWORD dwType = 0;
29 lRtn = RegQueryValueEx(hKey,_T("Favorites"),NULL,&dwType,(BYTE *)szOldPath,&dwOldLen);
30
31 // Write key
32 DWORD dwLen = (DWORD)(_tcslen(szDir) + 1) * sizeof(TCHAR);
33 lRtn = RegSetValueEx(hKey,_T("Favorites"),0L,REG_EXPAND_SZ, (const BYTE *)szDir, dwLen);
34
35 // Close Key
36 RegCloseKey(hKey);
37 }
38
39 int nChecked = m_Check.GetCheck();
40 if(nChecked)
41 {
42 TCHAR szExpandBuf[MAX_PATH] = {0};
43 ExpandEnvironmentStrings(
44 szOldPath, // szExpandBuf, //
45 MAX_PATH //
46 );
47
48 CopyDirectory(szExpandBuf, szDir);
49 }
50
51 if(lRtn == ERROR_SUCCESS)
52 {
53 strDisp.Format(_T("Successful!! Favorite = %s"), szDir);
54 SetDlgItemText(IDC_EDIT_PATH,strDisp);
55 }
56
文件夾遞歸拷貝代碼，實在懶的填注釋了，好在代碼不長，能讀就成：
BOOL CopyDirectory(LPCTSTR lpszSrcPath, LPCTSTR lpszDstPath)
{
BOOL bCopyRet = FALSE;
BOOL bRet;
WIN32_FIND_DATA FindData;
HANDLE hFindFile;
TCHAR szFileSrc[MAX_PATH] = {0};
TCHAR szFileDst[MAX_PATH] = {0};
TCHAR szFilter[MAX_PATH] = {0};
TCHAR* pszSrcPath = NULL;
TCHAR* pszDstPath = NULL;
if(!lpszSrcPath||!lpszDstPath)
return FALSE;
_tcscpy(szFileDst, lpszDstPath);
int nLen = (int)_tcslen(szFileDst);
if(szFileDst[nLen - 1] != _T('\\'))
{
CreateDirectory(szFileDst,NULL);
szFileDst[nLen] = _T('\\');
szFileDst[nLen + 1] = _T('\0');
}
_tcscpy(szFileSrc, lpszSrcPath);
_tcscpy(szFilter, lpszSrcPath);
nLen = (int)_tcslen(szFileSrc);
if(szFileSrc[nLen - 1] != _T('\\'))
{
_tcscat(szFilter, _T("\\*.*"));
szFileSrc[nLen] = _T('\\');
szFileSrc[nLen + 1] = _T('\0');
}
else
{
_tcscat(szFilter, _T("\\*.*"));
}
pszSrcPath = szFileSrc + _tcslen(szFileSrc);
pszDstPath = szFileDst + _tcslen(szFileDst);
hFindFile=FindFirstFile(szFilter,&FindData);
if(hFindFile!= INVALID_HANDLE_VALUE)
{
do
{
if(_tcscmp(FindData.cFileName,_T("."))&&_tcscmp(FindData.cFileName,_T(".."))&&
!(FindData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY))
{
_tcscpy(pszSrcPath,FindData.cFileName);
_tcscpy(pszDstPath,FindData.cFileName);
bCopyRet = CopyFile(szFileSrc, szFileDst, FALSE);
}
if(_tcscmp(FindData.cFileName,_T("."))&&_tcscmp(FindData.cFileName,_T(".."))&&
FindData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
{
_tcscpy(pszSrcPath,FindData.cFileName);
_tcscpy(pszDstPath,FindData.cFileName);
CopyDirectory(szFileSrc, szFileDst);
}
bRet=FindNextFile(hFindFile,&FindData);
}while(bRet);
FindClose(hFindFile);
}
return TRUE;
}