如何通过文件句柄获取文件的名字？？？

Question

如何通过文件句柄获取文件的名字？？？
FILE *fp = fopen（）；int getfilenamebyhandle(FILE*， char*);有这样的函数么？

Answer 1

你的命名真标准啊. http://www.osronline.com/lists_archive/ntdev/thread10734.html

Answer 2

FILE 就是一个结构，struct _iobuf {
        char *_ptr;
        int   _cnt;
        char *_base;
        int   _flag;
        int   _file;
        int   _charbuf;
        int   _bufsiz;
        char *_tmpfname;
        };
typedef struct _iobuf FILE;

Answer 3

CFile hFile((HANDLE)pFile);
CString m_szStr = hFile.GetFileName();
AfxMessageBox(m_szStr);

Answer 4

GetModuleFileNameWINAPI DWORD GetModuleFileName( 
HMODULE hModule,
LPWSTR lpFilename, 
DWORD nSize
);例:
TCHAR AppPath[MAX_PATH];
GetModuleFileName(m_hInstance,AppPath,MAX_PATH);
CString Path;
Path.Format(_T("%s"),AppPath);

Answer 5

通过 _get_osfhandle(_fileno(fp)) 可以获得 windows 的文件 HANDLE ,然后根据 neosu(neo) 的做法即可获得。

Answer 6

同意aa3000HANDLE hFile _get_osfhandle(_fileno(fp));
再交给后面的函数处理
要include    io.h   psapi.h
输出的结果还不太正确. 为"\Device\HarddiskVolume1\文件名"
再改改就可以了.
CString GetFilenameFromHandle(HANDLE hFile) 
{
  BOOL bSuccess = FALSE;
//  TCHAR* pszFilename[MAX_PATH+1];
  TCHAR pszFilename[MAX_PATH+1];
  ZeroMemory(pszFilename, sizeof(pszFilename));
  
  UINT uMaxLenDest = 0;  // Get the file size.
  DWORD dwFileSizeHi = 0;
  DWORD dwFileSizeLo = GetFileSize(hFile, &dwFileSizeHi);   // Create a file mapping object.
  HANDLE hFileMap = CreateFileMapping(hFile, 
                                      NULL, 
                                      PAGE_READONLY,
                                      0, 
                                      dwFileSizeLo,
                                      NULL);  if (hFileMap) {
    // Create a file mapping to get the file name.
    void* pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);    if (pMem) {
      if (GetMappedFileName (GetCurrentProcess(), 
                             pMem, 
                             (LPTSTR)pszFilename,
                             MAX_PATH)) {        // Attempt to translate the path with device name into drive
        // letters.
        TCHAR szTemp[512];
        *szTemp = NULL;        if (GetLogicalDriveStrings(sizeof(szTemp)-1,
                                   szTemp)) {
          TCHAR szName[MAX_PATH];
          TCHAR szDrive[3] = TEXT(" :");
          BOOL bFound = FALSE;
          TCHAR* p = szTemp;          do {
            // Copy the drive letter into the template string,
            // removing the backslash.
            *szDrive = *p;            // Look up each device name.
            if (QueryDosDevice(szDrive, szName, 
                               sizeof(szName))) {
              UINT uNameLen = _tcslen(szName);              // If greater than file name length, it's not a match.
              if (uNameLen < uMaxLenDest) {
                bFound = _tcsnicmp((char *)pszFilename, szName, uNameLen) 
                                    == 0;                if (bFound) {
                  // Reconstruct pszFilename using szTemp as scratch,
                  // and replace device path with our DOS path.
                  TCHAR szTempFile[MAX_PATH];
                  _stprintf(szTempFile,
                            TEXT("%s%s"),
                            szDrive,
                            pszFilename+uNameLen);
                  strncpy(pszFilename, szTempFile, uMaxLenDest);
                }
              }
            }            // Go to the next NULL character.
            while (*p++);
          } while (!bFound && *p); // at the end of the string
        }
      }
      bSuccess = TRUE;
      if (!UnmapViewOfFile(pMem)) ASSERT(0);
    }     if (!CloseHandle(hFileMap)) ASSERT(0);
  }
  return CString(pszFilename);
}

Answer 7

通过 _get_osfhandle(_fileno(fp)) 可以获得 windows 的文件 HANDLE ,然后根据 neosu(neo) 的做法即可获得。=====
不懂~~~

Answer 8

通过 _get_osfhandle(_fileno(fp)) 可以获得 windows 的文件 HANDLE ,然后根据 neosu(neo) 的做法即可获得。
=====
懂了~~:)

Answer 9

下面是改好的代码CString GetFilenameFromHandle(HANDLE hFile) 
{
  BOOL bSuccess = FALSE;
//  TCHAR* pszFilename[MAX_PATH+1];
  TCHAR pszFilename[MAX_PATH+1];
  ZeroMemory(pszFilename, sizeof(pszFilename));
  
  UINT uMaxLenDest = sizeof(pszFilename);  // Get the file size.
  DWORD dwFileSizeHi = 0;
  DWORD dwFileSizeLo = GetFileSize(hFile, &dwFileSizeHi);   // Create a file mapping object.
  HANDLE hFileMap = CreateFileMapping(hFile, 
                                      NULL, 
                                      PAGE_READONLY,
                                      0, 
                                      dwFileSizeLo,
                                      NULL);  if (hFileMap) {
    // Create a file mapping to get the file name.
    void* pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);    if (pMem) {
      if (GetMappedFileName (GetCurrentProcess(), 
                             pMem, 
                             (LPTSTR)pszFilename,
                             MAX_PATH)) {        // Attempt to translate the path with device name into drive
        // letters.
        TCHAR szTemp[512];
        *szTemp = NULL;        if (GetLogicalDriveStrings(sizeof(szTemp)-1,
                                   szTemp)) {
          TCHAR szName[MAX_PATH];
          TCHAR szDrive[3] = TEXT(" :");
          BOOL bFound = FALSE;
          TCHAR* p = szTemp;          do {
            // Copy the drive letter into the template string,
            // removing the backslash.
            *szDrive = *p;            // Look up each device name.
            if (QueryDosDevice(szDrive, szName, 
                               sizeof(szName))) {
              UINT uNameLen = _tcslen(szName);              // If greater than file name length, it's not a match.
              if (uNameLen < uMaxLenDest) {
                bFound = _tcsnicmp((char *)pszFilename, szName, uNameLen) 
                                    == 0;                if (bFound) {
                  // Reconstruct pszFilename using szTemp as scratch,
                  // and replace device path with our DOS path.
                  TCHAR szTempFile[MAX_PATH];
                  _stprintf(szTempFile,
                            TEXT("%s%s"),
                            szDrive,
                            pszFilename+uNameLen);
                  strncpy(pszFilename, szTempFile, uMaxLenDest);
                }
              }
            }            // Go to the next NULL character.
            while (*p++);
          } while (!bFound && *p); // at the end of the string
        }
      }
      bSuccess = TRUE;
      if (!UnmapViewOfFile(pMem)) ASSERT(0);
    }     if (!CloseHandle(hFileMap)) ASSERT(0);
  }
  return CString(pszFilename);
}