同步窗体移动

unit Unit1;

interface

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

type
  TForm1
= class(TForm)
    Panel1:
TPanel;
    procedure
FormShow(Sender: TObject);
  private
    procedure WMMOVE(var Msg: TMessage); message WM_MOVE;
 
public
    {
Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses Unit2;

procedure TForm1.FormShow(Sender:
TObject);
begin
  Form2.Visible
:= true;
end;

procedure TForm1.WMMOVE(var Msg: TMessage);
begin
  inherited;
  try
    Form2.Parent:=Panel1;
 
  Form2.Left:=0;
    Form2.Top:=0;
   
Form2.Align:=alClient;

  except

 
end;
end;

end.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Panel1:
TPanel;
  private
 
 procedure WMMOVE(var Msg: TMessage);  message
WM_MOVE;
  public
   
{ Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses Unit2;

procedure TForm1.WMMOVE(var Msg: TMessage);
begin
  inherited;
  try
    form2.Width :=
 Panel1.Width;
    form2.Height := Panel1.Height;

    form2.left := Form1.left +
Panel1.Left;
    form2.Top :=
Form1.Top + Panel1.Top;
  except

 
end;
end;
end.