Casting with TULargeInteger in delphi 10.2 Tokyo differ from previous version

Question

Casting with TULargeInteger with new compiler 10.2 missing attribut LowPart and HighPart.

uses Winapi.Windows;

    function RetLargeInt: Int64;
    var
      ALow: DWORD;

    begin
      {Do Something
        With ALow
      }
      TULargeInteger(Result).LowPart := ALow; {Missing 'LowPart'}
    end;

    procedure AProc;
    var
     ALocalInt: Int64;
    begin
      ALocalInt := RetLargeInt;
      {Do Something}
    end;

Answer 1

In 10.2 Tokyo, the declaration of TULargeInteger has changed from:

TULargeInteger = ULARGE_INTEGER;

to :

TULargeInteger = UInt64;

This means that you can no longer access the ULARGE_INTEGER record fields that exposes LowPart.

ULARGE_INTEGER = record
    case Integer of
    0: (
      LowPart: DWORD;
      HighPart: DWORD);
    1: (
      QuadPart: ULONGLONG);
  end;

---

You can change the code to use ULARGE_INTEGER instead:

ULARGE_INTEGER(Result).LowPart := ALow;