写一个delphi的多线程，能实时接收传参过来的数据流并保存到文件

好的，以下是一个简单的 Delphi 多线程程序，可以实时接收传参过来的数据流并保存到文件：

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
  TMyThread = class(TThread)
  private
    FFileName: string;
    FData: TStream;
  protected
    procedure Execute; override;
  public
    constructor Create(FileName: string; Data: TStream);
  end;

  TForm1 = class(TForm)
    Memo1: TMemo;
    BtnStart: TButton;
    procedure BtnStartClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    FThreadList: TThreadList;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

constructor TMyThread.Create(FileName: string; Data: TStream);
begin
  inherited Create(True);
  FFileName := FileName;
  FData := Data;
end;

procedure TMyThread.Execute;
var
  FileStream: TFileStream;
begin
  try
    FileStream := TFileStream.Create(FFileName, fmCreate);
    try
      FData.Position := 0;
      FileStream.CopyFrom(FData, FData.Size);
    finally
      FileStream.Free;
    end;
  except
    // do nothing
  end;
end;

procedure TForm1.BtnStartClick(Sender: TObject);
var
  FileName: string;
  Data: TMemoryStream;
  Thread: TMyThread;
begin
  FileName := FormatDateTime('yyyymmddhhnnss', Now) + '.bin';
  Data := TMemoryStream.Create;
  try
    // read data from somewhere
    // ...

    // save data to file using a thread
    Thread := TMyThread.Create(FileName, Data);
    FThreadList.Add(Thread);
    Thread.Start;
  finally
    Data.Free;
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  FThreadList := TThreadList.Create;
end;

procedure TForm1.FormDestroy(Sender: TObject);
var
  I: Integer;
  Thread: TThread;
begin
  FThreadList.LockList;
  try
    for I := 0 to FThreadList.Count - 1 do
    begin
      Thread := TThread(FThreadList[I]);
      Thread.WaitFor;
      Thread.Free;
    end;
  finally
    FThreadList.UnlockList;
    FThreadList.Free;
  end;
end;

end.

这个程序中，我们创建了一个 `TMyThread` 类，用于在后台线程中保存数据到文件。在主线程中，我们通过点击按钮触发保存操作，并将数据传递给后台线程。程序中使用了 `TThreadList` 来管理所有的后台线程，以便在程序退出时能够等待所有线程结束。注意，这个程序只是一个简单的示例，实际应用中需要根据具体需求进行修改和优化。