读取文件系统信息

//声明:
GetVolumeInformation(
lpRootPathName: PChar;               {磁盘驱动器代码字符串}
lpVolumeNameBuffer: PChar;           {磁盘驱动器卷标名称}
nVolumeNameSize: DWORD;              {磁盘驱动器卷标名称长度}
lpVolumeSerialNumber: PDWORD;        {磁盘驱动器卷标序列号}
var lpMaximumComponentLength: DWORD; {系统允许的最大文件名长度}
var lpFileSystemFlags: DWORD;        {文件系统标识}
lpFileSystemNameBuffer: PChar;       {文件操作系统名称}
nFileSystemNameSize: DWORD           {文件操作系统名称长度}
): BOOL;
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//举例:
procedure TForm1.FormCreate(Sender: TObject);
var
RootPath: array[0..20] of Char;
VolName: array[0..255] of Char;
SerialNumber: DWORD;
MaxCLength: DWORD;
FileSysFlag: DWORD;
FileSysName: array[0..255] of Char;
begin
RootPath := 'C:\';

GetVolumeInformation(
RootPath,
VolName,
255,
@SerialNumber,
MaxCLength,
FileSysFlag,
FileSysName,
255
);

Memo1.Clear;
with Memo1.Lines do
begin
Add(Format('磁盘驱动器代码字符串:'+ #9#9 +'%s',[RootPath]));
Add(Format('磁盘驱动器卷标名称:'+ #9#9 +'%s',[VolName]));
Add(Format('磁盘驱动器卷标序列号:'+ #9#9 +'%s',[IntToHex(SerialNumber,8)]));
Add(Format('系统允许的最大文件名长度:'+ #9 +'%d',[MaxCLength]));
Add(Format('文件系统标识:'+ #9#9#9 +'%d',[FileSysFlag]));
Add(Format('文件系统名称:'+ #9#9#9 +'%s',[FileSysName]));
end;
end;