A Simple Notepad with Delphi 6

Problem/Question/Abstract:

A Simple Notepad with Delphi (though reinventing the wheel)

Answer:

All the functions available in the normal notepad will be available with this and also I have added two more things in the Options menu (Want Tabs and Want Returns); by default, it’s been checked. And you can change the background color of the notepad, though you cannot save. Some functions like find text, replace have to be revisited though. If you people have any ideas on that, please feel free to share/update the code.

The following is the entire code:

Project Code:  DelphiNotepad.dpr

program DelphiNotepad;

uses
  Forms,
  NotePad1 in 'NotePad1.pas' {Form1},
  GoToForm in 'GoToForm.pas' {frmGoTo};

{$R *.res}

begin
  Application.Initialize;
  Application.Title := 'Delphi Notepad';
  Application.CreateForm(TForm1, Form1);
  Application.CreateForm(TfrmGoTo, frmGoTo);
  Application.Run;
end.

Unit One Code: Notepad1.pas

unit NotePad1;
{
Unit Name : NotePad1.pas
Developed By : S S B Magesh Puvananthiran
Description : A simple notepad developed with Delphi 6
}
interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ConvUtils, Menus, ComCtrls, StrUtils, ExtDlgs;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    MainMenu1: TMainMenu;
    FileMenu: TMenuItem;
    FileNew: TMenuItem;
    FileOpen: TMenuItem;
    EditMenu: TMenuItem;
    Undo: TMenuItem;
    N1: TMenuItem;
    Cut: TMenuItem;
    Copy: TMenuItem;
    Paste: TMenuItem;
    SelectAll1: TMenuItem;
    FormatMenu: TMenuItem;
    WordWrap: TMenuItem;
    FileSave: TMenuItem;
    Exit2: TMenuItem;
    FileExit: TMenuItem;
    SelectAll: TMenuItem;
    Font: TMenuItem;
    HelpMenu: TMenuItem;
    AboutNotepad: TMenuItem;
    TimeDate: TMenuItem;
    OpenDialog1: TOpenDialog;
    SaveDialog1: TSaveDialog;
    StatusBar1: TStatusBar;
    FontDialog1: TFontDialog;
    SaveAs1: TMenuItem;
    FilePrint: TMenuItem;
    N2: TMenuItem;
    PrintDialog1: TPrintDialog;
    PrinterSetupDialog1: TPrinterSetupDialog;
    FindDialog1: TFindDialog;
    N3: TMenuItem;
    Find: TMenuItem;
    FindNext: TMenuItem;
    Replace: TMenuItem;
    GoTo1: TMenuItem;
    ReplaceDialog1: TReplaceDialog;
    BackgroundColor: TMenuItem;
    ColorDialog1: TColorDialog;
    Options1: TMenuItem;
    WantTabs1: TMenuItem;
    WantReturns1: TMenuItem;
    procedure FileExitClick(Sender: TObject);
    procedure AboutNotepadClick(Sender: TObject);
    procedure FileOpenClick(Sender: TObject);
    procedure FileSaveClick(Sender: TObject);
    procedure FileNewClick(Sender: TObject);
    procedure WordWrapClick(Sender: TObject);
    procedure FontClick(Sender: TObject);
    procedure UndoClick(Sender: TObject);
    procedure CutClick(Sender: TObject);
    procedure CopyClick(Sender: TObject);
    procedure PasteClick(Sender: TObject);
    procedure SelectAllClick(Sender: TObject);
    procedure TimeDateClick(Sender: TObject);
    procedure Memo1Change(Sender: TObject);
    procedure Memo1MouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Memo1KeyUp(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure FormCreate(Sender: TObject);
    procedure SaveAs1Click(Sender: TObject);
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
    procedure FilePrintClick(Sender: TObject);
    procedure PageSetupClick(Sender: TObject);
    procedure FindDialog1Find(Sender: TObject);
    procedure FindClick(Sender: TObject);
    procedure FindNextClick(Sender: TObject);
    procedure ReplaceClick(Sender: TObject);
    procedure ReplaceDialog1Replace(Sender: TObject);
    procedure ReplaceDialog1Find(Sender: TObject);
    procedure GoTo1Click(Sender: TObject);
    procedure BackgroundColorClick(Sender: TObject);
    procedure WantTabs1Click(Sender: TObject);
    procedure WantReturns1Click(Sender: TObject);
  private
    procedure OpenTheFile;
    function SaveChanges: Boolean;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses GoToForm;

{$R *.dfm}

procedure TForm1.AboutNotepadClick(Sender: TObject);
begin
  ShowMessage('   Delphi Notepad ' + #13 +
    '   Developed with Borland Delphi 6 Enterprise Trial Edition');
end;

procedure TForm1.FileExitClick(Sender: TObject);
begin
  Close;
end;

procedure TForm1.FileOpenClick(Sender: TObject);
begin
  if not (Memo1.Modified) then
    OpenTheFile
  else if (Memo1.Modified) then
  begin
    ModalResult := MessageDlg('Save Changes?', mtConfirmation, [mbYes, mbNo,
      mbCancel], 0);
    if ((ModalResult = mrYes) and (SaveChanges)) or (ModalResult = mrNo) then
    begin
      OpenTheFile;
      Memo1.Modified := False;
    end;
  end;
end;

procedure TForm1.FileSaveClick(Sender: TObject);
begin
  if SaveChanges then
    Memo1.Modified := False;
end;

procedure TForm1.FileNewClick(Sender: TObject);
begin
  if not (Memo1.Modified) then
  begin
    Memo1.Clear;
    Form1.Caption := 'UnNamed - Delphi Notepad';
    OpenDialog1.FileName := '';
    SaveDialog1.FileName := '';
  end
  else if (Memo1.Modified) then
  begin
    ModalResult := MessageDlg('Save Changes?', mtConfirmation, [mbYes, mbNo,
      mbCancel], 0);
    if (ModalResult = mrYes) and (SaveChanges) then
    begin
      Memo1.Clear;
      Form1.Caption := 'UnNamed - Delphi Notepad';
      Memo1.Modified := False;
      OpenDialog1.FileName := '';
      SaveDialog1.FileName := '';
    end
    else if ModalResult = mrNo then
    begin
      Memo1.Clear;
      Form1.Caption := 'UnNamed - Delphi Notepad';
      OpenDialog1.FileName := '';
      SaveDialog1.FileName := '';
      Memo1.Modified := False;
    end;
  end;
end;

procedure TForm1.OpenTheFile;
begin
  if OpenDialog1.Execute then
  begin
    Memo1.Lines.LoadFromFile(OpenDialog1.FileName);
    Form1.Caption := OpenDialog1.FileName + ' - ' + 'Delphi Notepad';
  end;
end;

function TForm1.SaveChanges: Boolean;
begin
  Result := False;
  if (OpenDialog1.FileName = '') and (SaveDialog1.FileName = '') then
  begin
    if SaveDialog1.Execute then
    begin
      Screen.Cursor := crHourGlass;
      StatusBar1.SimpleText := 'Saving...';
      Memo1.Lines.SaveToFile(SaveDialog1.FileName);
      Form1.Caption := SaveDialog1.FileName + ' - ' + 'Delphi Notepad';
      StatusBar1.SimpleText := 'Ready';
      Screen.Cursor := crDefault;
      Result := True;
    end;
  end
  else
  begin
    Screen.Cursor := crHourGlass;
    StatusBar1.SimpleText := 'Saving...';
    if OpenDialog1.FileName <> '' then
    begin
      Memo1.Lines.SaveToFile(OpenDialog1.FileName);
      Form1.Caption := OpenDialog1.FileName + ' - ' + 'Delphi Notepad';
    end
    else if SaveDialog1.FileName <> '' then
    begin
      Memo1.Lines.SaveToFile(SaveDialog1.FileName);
      Form1.Caption := SaveDialog1.FileName + ' - ' + 'Delphi Notepad';
    end;

    StatusBar1.SimpleText := 'Ready';
    Screen.Cursor := crDefault;
    Result := True;
  end;
end;

procedure TForm1.WordWrapClick(Sender: TObject);
begin
  if WordWrap.Checked then
  begin
    Memo1.WordWrap := True;
    Memo1.ScrollBars := ssVertical;
  end
  else
  begin
    Memo1.WordWrap := False;
    Memo1.ScrollBars := ssBoth;
  end;
end;

procedure TForm1.FontClick(Sender: TObject);
begin
  if FontDialog1.Execute then
  begin
    Memo1.Font := FontDialog1.Font;
    Memo1.Font.Color := FontDialog1.Font.Color;
  end;
end;

procedure TForm1.UndoClick(Sender: TObject);
begin
  if (Memo1.Modified) and (Memo1.CanUndo) then
    Memo1.Undo;
end;

procedure TForm1.CutClick(Sender: TObject);
begin
  Memo1.CutToClipboard;
end;

procedure TForm1.CopyClick(Sender: TObject);
begin
  Memo1.CopyToClipboard;
end;

procedure TForm1.PasteClick(Sender: TObject);
begin
  Memo1.PasteFromClipboard;
end;

procedure TForm1.SelectAllClick(Sender: TObject);
begin
  Memo1.SelectAll;
end;

procedure TForm1.TimeDateClick(Sender: TObject);
begin
  Memo1.SelText := DateToStr(Now) + TimeToStr(Time);
end;

procedure TForm1.Memo1Change(Sender: TObject);
begin
  if (Memo1.Modified) and (Memo1.CanUndo) then
    Undo.Enabled := True
  else
    Undo.Enabled := False;
end;

procedure TForm1.Memo1MouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  if Memo1.SelText <> '' then
  begin
    Cut.Enabled := True;
    Copy.Enabled := True;
  end
  else
  begin
    Cut.Enabled := False;
    Copy.Enabled := False;
  end;
end;

procedure TForm1.Memo1KeyUp(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if Memo1.SelText <> '' then
  begin
    Cut.Enabled := True;
    Copy.Enabled := True;
  end
  else
  begin
    Cut.Enabled := False;
    Copy.Enabled := False;
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Form1.Caption := 'UnNamed - Delphi Notepad';
end;

procedure TForm1.SaveAs1Click(Sender: TObject);
begin
  if SaveDialog1.Execute then
  begin
    Memo1.Lines.SaveToFile(SaveDialog1.FileName);
    Form1.Caption := SaveDialog1.FileName + ' - Delphi Notepad';
    Memo1.Clear;
    Memo1.Lines.LoadFromFile(SaveDialog1.FileName);
  end;
end;

procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
  if (Memo1.Modified) then
  begin
    ModalResult := MessageDlg('Save Changes?', mtConfirmation, [mbYes, mbNo,
      mbCancel], 0);
    if ((ModalResult = mrYes) and (SaveChanges)) or (ModalResult = mrNo) then
      CanClose := True
    else
      CanClose := False;
  end
  else if not (Memo1.Modified) then
    CanClose := True;
end;

procedure TForm1.FilePrintClick(Sender: TObject);
begin
  if PrintDialog1.Execute then
    Print
  else
    PrinterSetupDialog1.Execute;
end;

procedure TForm1.PageSetupClick(Sender: TObject);
begin
  PrinterSetupDialog1.Execute;
end;

procedure TForm1.FindDialog1Find(Sender: TObject);
var
  I, J, PosReturn, SkipChars: Integer;
  CursorPos: TPoint;
begin
  CursorPos := Memo1.CaretPos;
  if frDown in FindDialog1.Options then
  begin
    for I := CursorPos.Y + 1 to Memo1.Lines.Count do
    begin
      PosReturn := Pos(FindDialog1.FindText, Memo1.Lines[I]);
      if (PosReturn <> 0) then
      begin
        SkipChars := 0;
        for J := 0 to I - 1 do
          SkipChars := SkipChars + Length(Memo1.Lines[J]);
        SkipChars := SkipChars + (I * 2);
        SkipChars := SkipChars + PosReturn - 1;

        Memo1.SelStart := SkipChars;
        Memo1.SelLength := Length(FindDialog1.FindText);
        Break;
      end;
    end;
  end
  else
  begin
    for I := CursorPos.Y - 1 downto 0 do
    begin
      PosReturn := Pos(FindDialog1.FindText, Memo1.Lines[I]);
      if PosReturn <> 0 then
      begin
        SkipChars := 0;
        for J := 0 to I - 1 do
          SkipChars := SkipChars + Length(Memo1.Lines[J]);
        SkipChars := SkipChars + (I * 2);
        SkipChars := SkipChars + PosReturn - 1;

        Memo1.SelStart := SkipChars;
        Memo1.SelLength := Length(FindDialog1.FindText);
        Break;
      end;
    end;
  end;
end;

procedure TForm1.FindClick(Sender: TObject);
begin
  FindDialog1.Execute;
end;

procedure TForm1.FindNextClick(Sender: TObject);
begin
  FindDialog1Find(nil);
end;

procedure TForm1.ReplaceClick(Sender: TObject);
begin
  ReplaceDialog1.Execute;
end;

procedure TForm1.ReplaceDialog1Replace(Sender: TObject);
var
  CursorPos: TPoint;
  I, J, SkipChars, PosReturn: integer;
begin
  if frReplace in ReplaceDialog1.Options then
    Memo1.SelText := ReplaceDialog1.ReplaceText
  else if frReplaceAll in ReplaceDialog1.Options then
  begin
    CursorPos := Memo1.CaretPos;
    for I := CursorPos.Y + 1 to Memo1.Lines.Count do
    begin
      PosReturn := Pos(ReplaceDialog1.FindText, Memo1.Lines[I]);
      if PosReturn <> 0 then
      begin
        SkipChars := 0;
        for J := 0 to I - 1 do
          SkipChars := SkipChars + Length(Memo1.Lines[J]);
        SkipChars := SkipChars + (I * 2);
        SkipChars := SkipChars + PosReturn - 1;

        Memo1.SelStart := SkipChars;
        Memo1.SelLength := Length(ReplaceDialog1.FindText);
        Memo1.SelText := ReplaceDialog1.ReplaceText;
      end;
    end;
  end;
end;

procedure TForm1.ReplaceDialog1Find(Sender: TObject);
var
  I, J, PosReturn, SkipChars: Integer;
  CursorPos: TPoint;
begin
  CursorPos := Memo1.CaretPos;
  for I := CursorPos.Y + 1 to Memo1.Lines.Count do
  begin
    PosReturn := Pos(ReplaceDialog1.FindText, Memo1.Lines[I]);
    if PosReturn <> 0 then
    begin
      SkipChars := 0;
      for J := 0 to I - 1 do
        SkipChars := SkipChars + Length(Memo1.Lines[J]);
      SkipChars := SkipChars + (I * 2);
      SkipChars := SkipChars + PosReturn - 1;

      Memo1.SelStart := SkipChars;
      Memo1.SelLength := Length(ReplaceDialog1.FindText);
      Break;
    end;
  end;
end;

procedure TForm1.GoTo1Click(Sender: TObject);
begin
  frmGoTo.ShowModal;
end;

procedure TForm1.BackgroundColorClick(Sender: TObject);
begin
  if ColorDialog1.Execute then
    Memo1.Color := ColorDialog1.Color;
end;

procedure TForm1.WantTabs1Click(Sender: TObject);
begin
  if WantTabs1.Checked then
    Memo1.WantTabs := True
  else
    Memo1.WantTabs := False;
end;

procedure TForm1.WantReturns1Click(Sender: TObject);
begin
  if WantReturns1.Checked then
    Memo1.WantReturns := True
  else
    Memo1.WantReturns := False;
end;

end.

Unit One Form File : Notepad1.dfm

object Form1: TForm1
  Left = 160
    Top = 107
    Width = 579
    Height = 414
    ActiveControl = Memo1
    Caption = 'Delphi Notepad'
    Color = clBtnFace
    Font.Charset = DEFAULT_CHARSET
    Font.Color = clWindowText
    Font.Height = -11
    Font.Name = 'MS Sans Serif'
    Font.Style = []
    Menu = MainMenu1
    OldCreateOrder = False
    Position = poScreenCenter
    OnCloseQuery = FormCloseQuery
    OnCreate = FormCreate
    PixelsPerInch = 96
    TextHeight = 13
    object Memo1: TMemo
    Left = 0
      Top = 0
      Width = 571
      Height = 349
      Align = alClient
      BevelInner = bvNone
      Color = clWhite
      HideSelection = False
      ScrollBars = ssBoth
      TabOrder = 0
      WantTabs = True
      WordWrap = False
      OnChange = Memo1Change
      OnKeyUp = Memo1KeyUp
      OnMouseUp = Memo1MouseUp
  end
  object StatusBar1: TStatusBar
    Left = 0
      Top = 349
      Width = 571
      Height = 19
      Panels = <>
      SimplePanel = True
      SimpleText = 'Ready'
  end
  object MainMenu1: TMainMenu
    Left = 256
      Top = 176
      object FileMenu: TMenuItem
      Caption = '&File'
        object FileNew: TMenuItem
        Caption = '&New'
          ShortCut = 16462
          OnClick = FileNewClick
      end
      object FileOpen: TMenuItem
        Caption = '&Open...'
          ShortCut = 16463
          OnClick = FileOpenClick
      end
      object FileSave: TMenuItem
        Caption = '&Save'
          ShortCut = 16467
          OnClick = FileSaveClick
      end
      object SaveAs1: TMenuItem
        Caption = 'Save &As...'
          OnClick = SaveAs1Click
      end
      object Exit2: TMenuItem
        Caption = '-'
      end
      object FilePrint: TMenuItem
        Caption = '&Print...'
          ShortCut = 16464
          OnClick = FilePrintClick
      end
      object N2: TMenuItem
        Caption = '-'
      end
      object FileExit: TMenuItem
        Caption = 'E&xit'
          OnClick = FileExitClick
      end
    end
    object EditMenu: TMenuItem
      Caption = '&Edit'
        object Undo: TMenuItem
        Caption = '&Undo'
          Enabled = False
          ShortCut = 16474
          OnClick = UndoClick
      end
      object N1: TMenuItem
        Caption = '-'
      end
      object Cut: TMenuItem
        Caption = 'C&ut'
          Enabled = False
          ShortCut = 16472
          OnClick = CutClick
      end
      object Copy: TMenuItem
        Caption = '&Copy'
          Enabled = False
          ShortCut = 16451
          OnClick = CopyClick
      end
      object Paste: TMenuItem
        Caption = '&Paste'
          ShortCut = 16470
          OnClick = PasteClick
      end
      object SelectAll1: TMenuItem
        Caption = '-'
      end
      object Find: TMenuItem
        Caption = '&Find...'
          ShortCut = 16454
          OnClick = FindClick
      end
      object FindNext: TMenuItem
        Caption = 'Find &Next...'
          ShortCut = 114
          OnClick = FindNextClick
      end
      object Replace: TMenuItem
        Caption = '&Replace'
          ShortCut = 16456
          OnClick = ReplaceClick
      end
      object GoTo1: TMenuItem
        Caption = '&Go To...'
          ShortCut = 16455
          OnClick = GoTo1Click
      end
      object N3: TMenuItem
        Caption = '-'
      end
      object SelectAll: TMenuItem
        Caption = 'Select &All'
          ShortCut = 16449
          OnClick = SelectAllClick
      end
      object TimeDate: TMenuItem
        Caption = 'Time/Date'
          ShortCut = 116
          OnClick = TimeDateClick
      end
    end
    object Options1: TMenuItem
      Caption = '&Options'
        object WantTabs1: TMenuItem
        AutoCheck = True
          Caption = '&Want Tabs'
          Checked = True
          OnClick = WantTabs1Click
      end
      object WantReturns1: TMenuItem
        AutoCheck = True
          Caption = 'Want &Returns'
          Checked = True
          OnClick = WantReturns1Click
      end
    end
    object FormatMenu: TMenuItem
      Caption = '&Format'
        object WordWrap: TMenuItem
        AutoCheck = True
          Caption = '&WordWrap'
          OnClick = WordWrapClick
      end
      object Font: TMenuItem
        Caption = '&Font...'
          OnClick = FontClick
      end
      object BackgroundColor: TMenuItem
        Caption = '&Background Color...'
          OnClick = BackgroundColorClick
      end
    end
    object HelpMenu: TMenuItem
      Caption = '&Help'
        object AboutNotepad: TMenuItem
        Caption = '&About Delphi Notepad'
          OnClick = AboutNotepadClick
      end
    end
  end
  object OpenDialog1: TOpenDialog
    DefaultExt = '*.txt'
      Filter = 'Text Files|*.txt|All Files|*.*'
      InitialDir = 'C:\MyDocuments'
      Title = 'Open File...'
      Left = 328
      Top = 192
  end
  object SaveDialog1: TSaveDialog
    DefaultExt = '*.txt'
      Filter = 'Text Files|*.txt|All Files|*.*'
      InitialDir = 'C:\'
      Options = [ofOverwritePrompt, ofHideReadOnly, ofEnableSizing]
      Title = 'Save File...'
      Left = 312
      Top = 136
  end
  object FontDialog1: TFontDialog
    Font.Charset = DEFAULT_CHARSET
      Font.Color = clWindowText
      Font.Height = -11
      Font.Name = 'MS Sans Serif'
      Font.Style = []
      MinFontSize = 0
      MaxFontSize = 0
      Left = 272
      Top = 192
  end
  object PrintDialog1: TPrintDialog
    Options = [poPrintToFile, poPageNums, poSelection, poWarning, poHelp,
      poDisablePrintToFile]
      Left = 272
      Top = 192
  end
  object PrinterSetupDialog1: TPrinterSetupDialog
    Left = 216
      Top = 72
  end
  object FindDialog1: TFindDialog
    Options = [frDisableMatchCase, frDisableWholeWord]
      OnFind = FindDialog1Find
      Left = 152
      Top = 192
  end
  object ReplaceDialog1: TReplaceDialog
    Options = [frDisableMatchCase, frDisableWholeWord]
      OnFind = ReplaceDialog1Find
      OnReplace = ReplaceDialog1Replace
      Left = 272
      Top = 192
  end
  object ColorDialog1: TColorDialog
    Ctl3D = True
      Left = 240
      Top = 224
  end
end

Unit Two Code:  GoToForm.pas

unit GoToForm;
{
Unit Name : GoToForm.pas
Developed By : S S B Magesh Puvananthiran
Description : A simple form to enter the line number.
}
interface

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

type
  TfrmGoTo = class(TForm)
    Edit1: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    procedure BitBtn1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmGoTo: TfrmGoTo;

implementation

uses NotePad1;

{$R *.dfm}

procedure TfrmGoTo.BitBtn1Click(Sender: TObject);
var
  LineNum, PosReturn, i, SkipChars: integer;
begin
  try
    PosReturn := 0;
    LineNum := StrToInt(Edit1.Text) - 1;
    if (LineNum >= 1) and (LineNum + 1 <= Form1.Memo1.Lines.Count - 1) then
    begin
      SkipChars := 0;
      for i := 0 to LineNum - 1 do
      begin
        SkipChars := SkipChars + Length(Form1.Memo1.Lines[i]);
        PosReturn := Pos(Form1.Memo1.Lines.Strings[0], Form1.Memo1.Lines[i]);
      end;
      Close;
      Form1.Memo1.SetFocus;
      SkipChars := SkipChars + PosReturn;
      Form1.Memo1.SelStart := SkipChars + (LineNum * 2);
      Form1.Memo1.SelLength := 1;
    end
    else
    begin
      MessageDlg('Line Number Out of Range', mtWarning, [mbOk], 0);
      Edit1.Text := IntToStr(Form1.Memo1.Lines.Count);
      Edit1.SelectAll;
    end;
  except
    MessageDlg('''' + Edit1.Text + '''' + ' is Not a valid integer value', mtError,
      [mbOk], 0);
  end;
end;

procedure TfrmGoTo.FormShow(Sender: TObject);
begin
  Edit1.Text := '1';
  Edit1.SelectAll;
end;

end.

Unit Two Form File: GoToForm.dfm

object frmGoTo: TfrmGoTo
  Left = 100
    Top = 108
    Width = 211
    Height = 88
    ActiveControl = Edit1
    BorderIcons = [biSystemMenu]
    Caption = 'Go To Line'
    Color = clBtnFace
    Font.Charset = DEFAULT_CHARSET
    Font.Color = clWindowText
    Font.Height = -11
    Font.Name = 'MS Sans Serif'
    Font.Style = []
    OldCreateOrder = False
    Position = poScreenCenter
    OnShow = FormShow
    PixelsPerInch = 96
    TextHeight = 13
    object Edit1: TEdit
    Left = 2
      Top = 3
      Width = 121
      Height = 21
      TabOrder = 0
      Text = '1'
  end
  object BitBtn1: TBitBtn
    Left = 126
      Top = 3
      Width = 75
      Height = 25
      TabOrder = 1
      OnClick = BitBtn1Click
      Kind = bkOK
  end
  object BitBtn2: TBitBtn
    Left = 126
      Top = 35
      Width = 75
      Height = 25
      TabOrder = 2
      Kind = bkCancel
  end
end


Component Download: DelphiNotepad.zip