秋·風

unit Unit1; 

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, LCLVersion,
  StdCtrls,LazConf;

type

  { TVersionForm }

  TVersionForm = class(TForm)
    Memo1: TMemo;
    procedure FormCreate(Sender: TObject);
  private

  public

  end; 

var
  VersionForm: TVersionForm;

implementation

{$R unit1.lfm}

{ TVersionForm }

procedure TVersionForm.FormCreate(Sender: TObject);
begin
  Memo1.Clear;
  // check if lcl_version is declared,
  // then we know if there is support for lcl version information

  {$if declared(lcl_version)}
  Memo1.Append('Example which uses the lcl version information');
  Memo1.Append(format('LCL Version: %s', [lcl_version]));
  Memo1.Append(format('LCL Major: %d', [lcl_major]));
  Memo1.Append(format('LCL Minor: %d', [lcl_minor]));
  Memo1.Append(format('LCL Release: %d', [lcl_release]));
  Memo1.Append(format('LCL Full Version: %d', [lcl_fullversion]));
  {$else}
  Memo1.Append('No lcl version information available');
  {$endif}
  {$ifdef LCLQT5} Memo1.Append('QT5 widget set');  {$endif}
  {$ifdef LCLGTK3}Memo1.Append('GTK3 widget set'); {$endif}
  {$ifdef LCLGTK2}Memo1.Append('GTK2 widget set'); {$endif}
  Memo1.Append('CPU Target - ' +  {$i %FPCTARGETCPU%});
  Memo1.Append('Operating System - ' + {$i %FPCTARGETOS%});
  Memo1.Append('FPCVERSION : ' + {$i %FPCVERSION%});
  Memo1.Append('FPCDATE : ' + {$i %FPCDATE%});
  Memo1.Append('Lazarus Version : ' + LazarusVersionStr);
  {$IFDEF LINUX}
  Memo1.Append('Desktop - ' + GetEnvironmentVariable('XDG_CURRENT_DESKTOP'));
  {$endif}
end;

end.