Variant parts in records

What is translated > Types > Records, Classes, Interfaces > Record > Variant parts in records

C# structures cannot have variant parts as Delphi records can have. However by means of the StructLayout(LayoutKind.Explicit) and FieldOffset attributes, the behavior can be reproduced.

  TRect = packed record

    case Integer of

      0: (Left, Top, Right, Bottom: Longint);

      1: (TopLeft, BottomRight: TPoint);

  end;

  ->

[StructLayout(LayoutKind.Explicit)]

public struct TRect

{

  /*# 0*/

  [FieldOffset(0)]

  public int Left;

  [FieldOffset(4)]

  public int Top;

  [FieldOffset(8)]

  public int Right;

  [FieldOffset(12)]

  public int Bottom;

  /*# 1*/

  [FieldOffset(0)]

  public TPoint TopLeft;

  [FieldOffset(4)]

  public TPoint BottomRight;

  public static TRect CreateRecord(){return new TRect();}

};

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