Delphi 2017 R3 Online

var FormMain: TFormMain;

interface

uses Vcl.Forms, Vcl.Controls, Vcl.StdCtrls, System.SysUtils;

type TFormMain = class(TForm) ButtonHello: TButton; procedure ButtonHelloClick(Sender: TObject); end;

implementation

interface

type TFormFMX = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); end;