#!/usr/bin/env instantfpc

{
  Copyright 2020-2022 Michalis Kamburelis.

  This file is part of "Castle Game Engine".

  "Castle Game Engine" is free software; see the file COPYING.txt,
  included in this distribution, for details about the copyright.

  "Castle Game Engine" is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  ----------------------------------------------------------------------------
}

{ Show the 1st command-line parameter in a CGE window.

  To make this work,
  - install FPC, which should include the instantfpc binary
  - install CGE using FpMake/FpPkg following https://castle-engine.io/fpmake

  Then run like
    ./castle_open_dialog
    ./castle_open_dialog 'Hello!!'
}

uses CastleParameters, CastleWindow, CastleControls, CastleColors, CastleUIControls,
  CastleUtils;

var
  DisplayCaption: String = 'Hello world' + NL + 'from Castle Game Engine' + NL + 'run through instantfpc';
  Window: TCastleWindow;
  L: TCastleLabel;
begin
  if Parameters.High >= 1 then
    DisplayCaption := Parameters[1];

  Window := TCastleWindow.Create(Application);
  Window.Open;

  L := TCastleLabel.Create(Application);
  L.FontSize := 40;
  L.Color := White;
  L.Anchor(vpMiddle);
  L.Anchor(hpMiddle);
  L.Caption := DisplayCaption;
  L.Alignment := hpMiddle;
  Window.Controls.InsertFront(L);

  Application.Run;
end.