LPCTSTR lpRootPathName="c:\\"; //取C盘的序列号
LPTSTR lpVolumeNameBuffer=new char[12];//磁盘卷标
DWORD nVolumeNameSize=12;DWORD VolumeSerialNumber;//磁盘序列号
DWORD MaximumComponentLength;
LPTSTR lpFileSystemNameBuffer=new char[10];
DWORD nFileSystemNameSize=10;
DWORD FileSystemFlags;
  GetVolumeInformation(lpRootPathName,
lpVolumeNameBuffer, nVolumeNameSize,
&VolumeSerialNumber, &MaximumComponentLength,
&FileSystemFlags,
lpFileSystemNameBuffer, nFileSystemNameSize);