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GetUserName info  Overview  Group


The GetUserName function retrieves the user name of the current thread. This is the name of the user currently logged onto the system.

BOOL GetUserName(

    LPTSTR lpBuffer,

// address of name buffer

    LPDWORD nSize 

// address of size of name buffer

   );

Parameters

lpBuffer
Points to the buffer to receive the null-terminated string containing the user’s logon name. If this buffer is not large enough to contain the entire user name, the function fails. A buffer size of (UNLEN + 1) characters will hold the maximum length user name including the terminating null character.
nSize
Pointer to a DWORD variable that, on input, specifies the maximum size, in characters, of the buffer specified by the lpBuffer parameter. If the function succeeds, the variable receives the number of characters copied to the buffer. If the buffer is not large enough, the function fails and the variable receives the required buffer size, in characters, including the terminating null character.

Return Values

If the function succeeds, the return value is nonzero, and the variable pointed to by nSize contains the number of characters copied to the buffer specified by lpBuffer, including the terminating null character.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

If the current thread is impersonating another client, the GetUserName function returns the user name of the client that the thread is impersonating.

See Also

LookupAccountName 

See also:

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