FGIW1: Delphi Version

{*****************************************************************************
*                                                                            *
*  FGIW1.dpr                                                                 *
*  FGIW1U.pas                                                                *
*                                                                            *
*  Demonstrate the basic Fastgraph/Image for Windows operations of opening   *
*  an FGI file and displaying a PCX image from that FGI file.                *
*                                                                            *
*****************************************************************************}
unit Fgiw1u;
interface
uses
  SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
  Forms, Dialogs, FGWin, FGIWin;
type
  TForm1 = class(TForm)
    procedure AppOnActivate(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormPaint(Sender: TObject);
    procedure FormResize(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  end;
var
  Form1: TForm1;
implementation
{$R *.DFM}
var
  dc   : hDC;
  hPal : hPalette;
  hVB  : integer;
  hFGI : integer;
  cxClient, cyClient : integer;
procedure TForm1.AppOnActivate(Sender: TObject);
begin
  fg_realize(hPal);
  Invalidate;
end;
procedure TForm1.FormActivate(Sender: TObject);
begin
  fg_realize(hPal);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
  dc := GetDC(Form1.Handle);
  fg_setdc(dc);
  hPal := fg_defpal;
  fg_realize(hPal);
  fg_vbinit;
  hVB := fg_vballoc(320,200);
  fg_vbopen(hVB);
  fg_vbcolors;
  hFGI := fgi_open('EXAMPLE.FGI'+chr(0));
  if hFGI = 0 then
  begin
    MessageDlg('Unable to open FGI file.',mtError,[mbOK],0);
    Close;
    Exit;
  end;
  fgi_display('CLOUDS.PCX'+chr(0),FG_AT_XY,hFGI);
  fgi_close(hFGI);
  Application.OnActivate := AppOnActivate;
end;
procedure TForm1.FormPaint(Sender: TObject);
begin
  fg_vbscale(0,fg_getmaxx,0,fg_getmaxy,0,cxClient-1,0,cyClient-1);
end;
procedure TForm1.FormResize(Sender: TObject);
begin
  cxClient := ClientWidth;
  cyClient := ClientHeight;
  Invalidate;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
  fg_vbclose;
  fg_vbfree(hVB);
  fg_vbfin;
  DeleteObject(hPal);
  ReleaseDC(Form1.Handle,dc);
end;
end.