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unit UnitMain;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Grids;

type
  TForm1 = class(TForm)
    BuOpen: TButton;
    OpenDLG: TOpenDialog;
    SGHexdata: TStringGrid;
    SGCharData: TStringGrid;
    procedure BuOpenClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var i:integer;
begin
  SGHexdata.ColCount := 17;
  SGHexdata.RowCount := 11;
  for i:=1 to 16 do
    SGHexdata.ColWidths[i]:= 20;
  for i:=0 to 10 do
    SGHexdata.RowHeights[i]:= 20;
  SGCharData.ColCount := 16;
  SGCharData.RowCount := 11;
  for i:=0 to 15 do
    SGCharData.ColWidths[i]:= 20;
  for i:=0 to 10 do
    SGCharData.RowHeights[i]:= 20;
end;

procedure TForm1.BuOpenClick(Sender: TObject);
var FStream : TFileStream;
    LC,HXC:integer;
    LStr:string;
    ByteBuff:byte;
begin
  if OpenDLG.Execute then begin
    FStream:=TFileStream.Create(OpenDLG.FileName,fmOpenRead);
    try
      FStream.Seek(0,soFromBeginning);
      for LC:=0 to 10 do begin
        LStr:='';
        for HXC :=1 to 16 do begin
          FStream.ReadBuffer(ByteBuff,1);
          SGHexdata.Cells[HXC,LC+1] := IntToHex(ByteBuff,2);
          SGCharData.Cells[HXC-1,LC+1]:= Chr(ByteBuff);
        end;
      end;
    finally
      FStream.Free;
    end;
  end;
end;

end.