Как свернуть форму при нажатии на кнопку Х в заголовке

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unit Unit1;
 
interface
 
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
 
type
TForm1 = class(TForm)
Button1: TButton;
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
gEndSession:boolean;
procedure WMQueryEndSession(var message: TWMQueryEndSession); message WM_QUERYENDSESSION;
public
{ Public declarations }
end;
 
var
Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
{ TForm1 }
 
procedure TForm1.WMQueryEndSession(var message: TWMQueryEndSession);
begin
message.Result := 1;
gEndSession := True;
end;
 
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
if not gEndSession then begin
CanClose := false;
Application.Minimize;
end;
end;
 
procedure TForm1.Button1Click(Sender: TObject);
begin
gEndSession := True;
close;
end;
 
end.


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