FtpFindFirstFileA function (wininet.h)
Searches the specified directory of the given FTP session. File and directory entries are returned to the application in the WIN32_FIND_DATA structure.
Syntax
HINTERNET FtpFindFirstFileA(
[in] HINTERNET hConnect,
[in] LPCSTR lpszSearchFile,
[out] LPWIN32_FIND_DATAA lpFindFileData,
[in] DWORD dwFlags,
[in] DWORD_PTR dwContext
);
Parameters
[in] hConnect
Handle to an FTP session returned from InternetConnect.
[in] lpszSearchFile
Pointer to a null-terminated string that specifies a valid directory path or file name for the FTP server's file system. The string can contain wildcards, but no blank spaces are allowed. If the value of lpszSearchFile is NULL or if it is an empty string, the function finds the first file in the current directory on the server.
[out] lpFindFileData
Pointer to a WIN32_FIND_DATA structure that receives information about the found file or directory.
[in] dwFlags
Controls the behavior of this function. This parameter can be a combination of the following values.
INTERNET_FLAG_HYPERLINK
INTERNET_FLAG_NEED_FILE
INTERNET_FLAG_NO_CACHE_WRITE
INTERNET_FLAG_RELOAD
INTERNET_FLAG_RESYNCHRONIZE
[in] dwContext
Pointer to a variable that specifies the application-defined value that associates this search with any application data. This parameter is used only if the application has already called InternetSetStatusCallback to set up a status callback function.
Return value
Returns a valid handle for the request if the directory enumeration was started successfully, or returns NULL otherwise. To get a specific error message, call GetLastError. If GetLastError returns ERROR_INTERNET_EXTENDED_ERROR, as in the case where the function finds no matching files, call the InternetGetLastResponseInfo function to retrieve the extended error text, as documented in Handling Errors.
Remarks
For FtpFindFirstFile, file times returned in the WIN32_FIND_DATA structure are in the local time zone, not in a coordinated universal time (UTC) format.
FtpFindFirstFile is similar to the FindFirstFile function. Note, however, that only one FtpFindFirstFile can occur at a time within a given FTP session. The enumerations, therefore, are correlated with the FTP session handle. This is because the FTP protocol allows only a single directory enumeration per session.
After calling FtpFindFirstFile and until calling InternetCloseHandle, the application cannot call FtpFindFirstFile again on the given FTP session handle. If a call is made to FtpFindFirstFile on that handle, the function fails with ERROR_FTP_TRANSFER_IN_PROGRESS. After the calling application has finished using the HINTERNET handle returned by FtpFindFirstFile, it must be closed using the InternetCloseHandle function.
After beginning a directory enumeration with FtpFindFirstFile, the InternetFindNextFile function can be used to continue the enumeration.
Because the FTP protocol provides no standard means of enumerating, some of the common information about files, such as file creation date and time, is not always available or correct. When this happens, FtpFindFirstFile and InternetFindNextFile fill in unavailable information with a best guess based on available information. For example, creation and last access dates are often the same as the file's modification date.
The application cannot call FtpFindFirstFile between calls to FtpOpenFile and InternetCloseHandle.
Like all other aspects of the WinINet API, this function cannot be safely called from within DllMain or the constructors and destructors of global objects.
Note
The wininet.h header defines FtpFindFirstFile as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wininet.h |
| Library | Wininet.lib |
| DLL | Wininet.dll |