如何获取硬盘卷标、序列号和文件系统类型?    磁盘序列号在每次软盘或硬盘格式化后都重新生成,并且不回重复。许多程序员用此加密。其实也可以修改该函数,可以得到磁盘卷标和文件系统类型信息。 声明: Private Declare Function GetVolumeInformation Lib "kernel32.dll" Alias _   "GetVolumeInformationA" (ByVal lpRootPathName As String, ByVal _   lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Integer, _   lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, _   lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, _   ByVal nFileSystemNameSize As Long) As Long 代码: Function GetSerialNumber(sRoot As String) As Long   Dim lSerialNum As Long   Dim R As Long   Dim strLabel As String, strType As String   strLabel = String$(255, Chr$(0))   '磁盘卷标   strType = String$(255, Chr$(0))   '文件系统类型 一般为 FAT   R = GetVolumeInformation(sRoot, strLabel, Len(strLabel), _     lSerialNum, 0, 0, strType, Len(strType))   GetSerialNumber = lSerialNum   '在 strLabel 中为 磁盘卷标   '在 strType 中为 文件系统类型 End Function 用法: 当驱动器不存在时,函数返回 0。如果是个非根目录,也将返回 0: lSerial = GetSerialNumber("c:\")