GetLogicalDriveStringsW function (fileapi.h)
Fills a buffer with strings that specify valid drives in the system.
DWORD GetLogicalDriveStringsW( [in] DWORD nBufferLength, [out] LPWSTR lpBuffer );
The maximum size of the buffer pointed to by lpBuffer, in TCHARs. This size does not include the terminating null character. If this parameter is zero, lpBuffer is not used.
A pointer to a buffer that receives a series of null-terminated strings, one for each valid drive in the system, plus with an additional null character. Each string is a device name.
If the function succeeds, the return value is the length, in characters, of the strings copied to the buffer, not including the terminating null character. Note that an ANSI-ASCII null character uses one byte, but a Unicode (UTF-16) null character uses two bytes.
If the buffer is not large enough, the return value is greater than nBufferLength. It is the size of the buffer required to hold the drive strings.
If the function fails, the return value is zero. To get extended error information, use the GetLastError function.
This function returns a concatenation of the drives in the Global and Local MS-DOS Device namespaces. If a drive exists in both namespaces, this function will return the entry in the Local MS-DOS Device namespace. For more information, see Defining an MS DOS Device Name.
In Windows 8 and Windows Server 2012, this function is supported by the following technologies.
|Server Message Block (SMB) 3.0 protocol||No|
|SMB 3.0 Transparent Failover (TFO)||No|
|SMB 3.0 with Scale-out File Shares (SO)||No|
|Cluster Shared Volume File System (CsvFS)||Yes|
|Resilient File System (ReFS)||Yes|
SMB does not support volume management functions.
For an example, see Obtaining a File Name From a File Handle.
|Minimum supported client||Windows XP [desktop apps only]|
|Minimum supported server||Windows Server 2003 [desktop apps only]|
|Header||fileapi.h (include Windows.h)|