USB-Seriennummer auslesen

[KodeZwerg]

RRUZ

Delphi-Quellcode:

program GetWMI_USBConnectedInfo;

{$APPTYPE CONSOLE}

uses
  Windows,
  Classes,
  ActiveX,
  Variants,
  SysUtils,
  WbemScripting_TLB;

procedure  GetUSBDiskDriveInfo;
var
  WMIServices  : ISWbemServices;
  Root,a,b     : ISWbemObjectSet;
  Item,Item2   : Variant;
  i,ii,iii,iiii: Integer;
  start,stop,freq:Int64;
begin
  QueryPerformanceFrequency(freq);
  QueryPerformanceCounter(start);

  WMIServices := CoSWbemLocator.Create.ConnectServer('.', 'root\cimv2','', '', '', '', 0, nil);
  Root := WMIServices.ExecQuery('Select * From Win32_DiskDrive','WQL', 0, nil);
  for i := 0 to Root.Count - 1 do
  begin
    Item := Root.ItemIndex(i);
    for ii := VarArrayLowBound(Item.Capabilities, 1) to VarArrayHighBound(Item.Capabilities, 1) do if (Item.Capabilities[ii] = 7) then begin
      Writeln('Caption      '+VarToStr(Item.Caption));
      Writeln('Name         '+VarToStr(Item.Name));
      Writeln('DeviceID     '+VarToStr(Item.DeviceID));
      Writeln('Partitions   '+VarToStr(Item.Partitions));
      Writeln('PNPDeviceID  '+VarToStr(Item.PNPDeviceID));
      Writeln('SerialNumber '+VarToStr(Item.SerialNumber));
      Writeln('Signature    '+VarToStr(Item.Signature));

      a := WMIServices.ExecQuery('ASSOCIATORS OF {Win32_DiskDrive.DeviceID=''' + VarToStr(Item.DeviceID) + '''} WHERE AssocClass = Win32_DiskDriveToDiskPartition','WQL', 0, nil);
      for iiii := 0 to a.Count - 1 do begin
        b := WMIServices.ExecQuery('ASSOCIATORS OF {Win32_DiskPartition.DeviceID=''' + VarToStr(Variant(a.ItemIndex(iiii)).DeviceID) + '''} WHERE AssocClass = Win32_LogicalDiskToPartition','WQL', 0, nil);
        for iii := 0 to b.Count - 1 do begin
          Item2 := b.ItemIndex(iii);
          Writeln('Drive = ' + Item2.Caption);
        end;
      end;
      Writeln;
      Writeln;
    end;
  end;
  QueryPerformanceCounter(stop);
  if (freq > 0) then
    Writeln('Time took: ' + FloatToStr((stop-start) / freq))
  else
    Writeln('Unable to measure time!');
end;

begin
  try
    CoInitialize(nil);
    GetUSBDiskDriveInfo;
    Readln;
    CoUninitialize;
  except
    on E:Exception do
    Begin
        CoUninitialize;
        Writeln(E.Classname, ': ', E.Message);
        Readln;
    End;
  end;
end.

Hilft das?

[walharth]

Hallo KodeZwerg,

vielen Dank, aber leider liefert die Query "Root := WMIServices.ExecQuery('Select * From Win32_DiskDrive','WQL', 0, nil);"
auf einigen Windows Tablets eine leere Liste.

Ich bräuchte für diesen Fall eine Alternative ohne WMI.

Gruß
Walter