unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs;

type
  TForm1 = class(TForm)
    Button1: TButton; //现在的 TButton 来自 FMX.Controls 单元
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowMessage('Hello FireMonkey!'); //现在 ShowMessage 方法来自 FMX.Dialogs 单元; 底层实现不同但用法一样, 太好了
end;

end.