WNetGetUniversalName

This function is used to get Universal information about a network name which is referred to using a local device name. The following levels of information can be obtained about a network name.

DWORD WNetGetUniversalName (
    LPTSTR lpLocalPath,
    DWORD dwInfoLevel,
    LPVOID lpBuffer,
    LPDWORD lpBufferSize
    );

lpLocalPath: Contains the local path to an object on a network resource. This path is drive based path.
dwInfoLevel: The level of detail of information the caller is interested in as described above.
lpBuffer __: Points to a buffer to receive the info the user has requested. The specific structure returned is one of those described above.
lpBufferSize: This is used to specify the size, in bytes, of the buffer passed in. If the call fails because the buffer is not big enough, this location will be used to return the required buffer size.

WN_SUCCESS if the call is successful. Otherwise, GetLastError should be called for extended error information. Extended error codes include:

WN_BAD_LOCALNAME	lpLocalName is invalid
WN_NOT_CONNECTED	lpLocalName not a redirected device
WN_MORE_DATA	the buffer is too small
WN_CONNECTION_CLOSED	the device is not currently connected, but it is a remembered (persistent) connection.
WN_FUNCTION_BUSY	The router or provider is busy (possibly initializing). The caller should retry.
WN_NO_NETWORK	network is not present.
WN_NOT_SUPPORTED	This function is not supported by any of the providers.
WN_EXTENDED_ERROR	a network specific error occured. WNetGetLastError should be called to obtain a description of the error.