pszFilename (PSZ) - input
It may contain global file-name characters. If pszFilename does contain global file-name characters, they remain in the result path returned in pBuf. This allows applications like CMD.EXE to pass the output directly to DosFindFirst. If there are no global file-name characters in pszFilename, the resulting path returned in pBuf is a fully qualified name, and may be passed directly to DosOpen, or any other system function.