Delphi 2017 R3 -

{$R *.fmx}

procedure TFormFMX.Button1Click(Sender: TObject); begin ShowMessage('FMX cross-platform example'); end; delphi 2017 r3

var FormMain: TFormMain;

implementation

uses Vcl.Forms, Vcl.Controls, Vcl.StdCtrls, System.SysUtils; begin ShowMessage('FMX cross-platform example')