delphi - 如何获取我的磁盘分区的 GUID？

Question

我正在使用 WMI 获取所有磁盘信息，如驱动器、驱动器号等，但我还没有找到如何获取每个分区的 UUID/GUID。

Answer 1

有几个 WMI 类可以访问Disks 和Partitions 信息:

• Win32_Volume
• Win32_DiskDrive
• Win32_DiskPartition

还有这两个，它们将前面的相互联系起来:

• Win32_DiskDrivePhysicalMedia
• Win32_DiskDriveToDiskPartition

特别是使用 Win32_Volume，您可以访问现有分区的 GUID。 您可以从 shell 对其进行测试:

> wmic volume get Driveletter, DeviceID

你得到这样的数据:

使用 delphi，您可以使用一些组件，或者像这样的一个代码(由 Code Creator -Rodrigo Ruz- 编写):

program GetWMI_Info;
{$APPTYPE CONSOLE}   
uses
  SysUtils, ActiveX, ComObj, Variants;
   
procedure  GetWin32_VolumeInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM Win32_Volume','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('Description     %s',[String(VarToStrDef(FWbemObject.Description, ''))]));// String
    Writeln(Format('DeviceID        %s',[String(VarToStrDef(FWbemObject.DeviceID, ''))]));// String
    Writeln(Format('DriveLetter     %s',[String(VarToStrDef(FWbemObject.DriveLetter, ''))]));// String
    Writeln(Format('DriveType       %d',[Integer(VarToStrDef(FWbemObject.DriveType, ''))]));// Uint32
    Writeln(Format('Label           %s',[String(VarToStrDef(FWbemObject.Label, ''))]));// String
    Writeln(Format('Name            %s',[String(VarToStrDef(FWbemObject.Name, ''))]));// String
    Writeln(Format('SerialNumber    %d',[Integer(VarToStrDef(FWbemObject.SerialNumber, ''))]));// Uint32
    Writeln('');
    FWbemObject:=Unassigned;
  end;
end;

begin
 try
    CoInitialize(nil);
    try
      GetWin32_VolumeInfo;
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode]));
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit');
 Readln;
end.

结果是这样的: