procedure TForm1.acPageSetupExecute(Sender: TObject);
// Action: ページ設定(U)...
begin
  PageSetupDialog1.Execute;
end;

unit frmuMain;

interface

uses
  ..., Vcl.Printers, System.Math;  // <-- 追加

  (中略)

  private
    { Private 宣言 }
    FFileName: String;
    FEncodingIndex: Integer;
    procedure DispRowCol;
    procedure Init;
    procedure PrintText(const HeaderStr, FooterStr: string);
    procedure SaveFile;
    procedure UpdateCaption;
  public
    { Public 宣言 }
  end;

var
  Form1: TForm1;

implementation

  (中略)

procedure TForm1.PrintText(const HeaderStr, FooterStr: string);
// 印刷ロジック
begin
  
end;

procedure TForm1.PrintText(const HeaderStr, FooterStr: string);
// 印刷ロジック
const
  DRAW_FLG = DT_NOPREFIX or DT_TOP or DT_LEFT or DT_WORDBREAK;
  CALC_FLG = DRAW_FLG or DT_CALCRECT;
var
  i, l, j, Index, LineCount, Sum, TextHeight, X_DPI, Y_DPI, PAGE_HEIGHT,
  PAPER_WIDTH, PAPER_HEIGHT, MIN_HEIGHT, Copies: Integer;
  PrintRect, CalcRect, CalcRect2, HeaderRect, FooterRect: TRect;
  Text: String;
  SL : TStringList;
  Pages: array of Integer;
  { DrawHeaderFooter End}
  procedure DrawHeaderFooter(const AStr: string; ARect: TRect; AFlgs: Integer; APage: Integer);
  var
    Flgs: Integer;
    AlignFlg: Integer;
    P: PChar;
    Str: string;
    ChangeAlign: Boolean;
  begin
    if AStr = '' then
      Exit;
    Flgs := AFlgs or DT_NOPREFIX or DT_SINGLELINE;
    AlignFlg := DT_CENTER;
    Str := '';
    P := @AStr[1];
    while (P^ <> #$00) do
      begin
        if P^ = '&' then
          begin
            Inc(P);
            if P^ = #$00 then
              Break;
            ChangeAlign := False;
            case UpCase(P^) of
              'L', 'C', 'R':
                ChangeAlign := True;
              'D':
                Str := Str + FormatDateTime('YYYY"年"M"月"M"日"', Date);
              'T':
                Str := Str + FormatDateTime('h:n:s', Time);
              'F':
                begin
                  if FFileName = '' then
                    Str := Str + '無題'
                  else
                    Str := Str + TPath.GetFileName(FFileName);
                end;
              'P':
                Str := Str + APage.ToString;
              '&':
                Str := Str + '&';
            end;
            if (Str <> '') and ChangeAlign then
              begin
                DrawText(Printer.Canvas.Handle, PChar(Str), Length(Str), ARect, Flgs or AlignFlg);
                Str := '';
              end;
            case UpCase(P^) of
              'L': AlignFlg := DT_LEFT;
              'C': AlignFlg := DT_CENTER;
              'R': AlignFlg := DT_RIGHT;
            end;
          end
        else
          Str := Str + P^;
        Inc(P);
      end;
    if Str <> '' then
      begin
        DrawText(Printer.Canvas.Handle, PChar(Str), Length(Str), ARect, Flgs or AlignFlg);
        Str := '';
      end;
  end;
  { DrawHeaderFooter End}
  { DrawHeader Begin}
  procedure DrawHeader(APage: Integer);
  begin
    DrawHeaderFooter(HeaderStr, HeaderRect, DT_TOP, APage);
  end;
  { DrawHeader End}
  { DrawFooter Begin}
  procedure DrawFooter(APage: Integer);
  begin
    DrawHeaderFooter(FooterStr, FooterRect, DT_BOTTOM, APage);
  end;
  { DrawFooter End}
begin
  if not PrintDialog1.Execute then
    Exit;

  // プリンタの DPI
  X_DPI := GetDeviceCaps(Printer.Handle, LOGPIXELSX);
  Y_DPI := GetDeviceCaps(Printer.Handle, LOGPIXELSY);

  // 用紙の幅と高さ
  PAPER_WIDTH  := GetDeviceCaps(Printer.Handle, PHYSICALWIDTH );
  PAPER_HEIGHT := GetDeviceCaps(Printer.Handle, PHYSICALHEIGHT);

  // 印刷領域
  PrintRect.Top    :=                Trunc(PageSetupDialog1.MarginTop    / 2540 * Y_DPI);
  PrintRect.Left   :=                Trunc(PageSetupDialog1.MarginLeft   / 2540 * X_DPI);
  PrintRect.Bottom := PAPER_HEIGHT - Trunc(PageSetupDialog1.MarginBottom / 2540 * Y_DPI);
  PrintRect.Right  := PAPER_WIDTH  - Trunc(PageSetupDialog1.MarginRight  / 2540 * X_DPI);

  // 印刷
  Printer.BeginDoc;
  SetBkMode(Printer.Canvas.Handle, TRANSPARENT);
  Printer.Canvas.Font.Assign(Memo1.Font); // Memo1 のフォントを Canvas に割り当て

  Text := 'A';
  CalcRect := Rect(0, 0, Printer.PageWidth, 0);
  DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, CALC_FLG);
  MIN_HEIGHT := CalcRect.Bottom;

  if HeaderStr <> '' then
    begin
      HeaderRect := PrintRect;
      HeaderRect.Bottom := PrintRect.Top + MIN_HEIGHT * 2;
      PrintRect.Top := HeaderRect.Bottom;
    end;
  if FooterStr <> '' then
    begin
      FooterRect := PrintRect;
      FooterRect.Top := PrintRect.Bottom - MIN_HEIGHT * 2;
      PrintRect.Bottom := FooterRect.Top;
    end;
  PAGE_HEIGHT := PrintRect.Bottom - PrintRect.Top;

  SetLength(Pages, 1);
  SL := TStringList.Create;
  try
    SL.Text := Memo1.Lines.Text;

    // ページ数の計算
    LineCount := 0;
    Sum := 0;
    for i:=0 to SL.Count-1 do
      begin
        Text := SL[i];
        CalcRect := PrintRect;
        CalcRect.Top    := 0;
        CalcRect.Bottom := 0;
        DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, CALC_FLG);
        TextHeight := Max(MIN_HEIGHT, CalcRect.Bottom);
        if (Sum + TextHeight) > PAGE_HEIGHT then
          begin
            Pages[Length(Pages)-1] := LineCount;
            SetLength(Pages, Length(Pages) + 1);
            LineCount := 0;
            Sum := 0;
          end;
        Inc(LineCount);
        Inc(Sum, TextHeight);
      end;
    LineCount := SL.Count;
    for i:=0 to Length(Pages) - 2 do
      Dec(LineCount, Pages[i]);
    Pages[Length(Pages)-1] := LineCount;

    // 印刷
    if PrintDialog1.Collate then
      Copies := PrintDialog1.Copies // 部単位で印刷
    else
      Copies := 1;
    for j:=1 to Copies do
      begin
        CalcRect := PrintRect;
        Index := 0;
        for l:=0 to Length(Pages) - 1 do
          begin
            // ヘッダ
            DrawHeader(l+1);
            // テキスト
            CalcRect.Top := PrintRect.Top;
            for i:=0 to Pages[l] - 1 do
              begin
                CalcRect2 := PrintRect;
                CalcRect2.Top := 0;
                CalcRect2.Bottom := 0;
                Text := SL[Index];
                DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect2, CALC_FLG);
                TextHeight := Max(MIN_HEIGHT, CalcRect2.Bottom);
                DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, DRAW_FLG);
                CalcRect.Top := CalcRect.Top + TextHeight;
                Inc(Index);
              end;
            // フッタ
            DrawFooter(l+1);
            // 改ページ
            if (l <> (Length(Pages) - 1)) or (J <> Copies) then
              Printer.NewPage;
          end;
      end;
  finally
    SL.Free;
  end;
  Printer.EndDoc;
end;

procedure TForm1.acPrintExecute(Sender: TObject);
// Action: 印刷(P)
begin
  PrintText('&f', 'ページ(&p)');
end;

object Label1: TLabel
  Left = 12
  Top = 15
  Width = 58
  Height = 14
  Caption = #12504#12483#12480#12540'(&H):'
  FocusControl = Edit1
end
object Edit1: TEdit
  Left = 88
  Top = 12
  Width = 300
  Height = 23
  TabOrder = 0
  Text = 'Edit1'
end
object Label2: TLabel
  Left = 12
  Top = 51
  Width = 53
  Height = 14
  Caption = #12501#12483#12479#12540'(&F):'
  FocusControl = Edit2
end
object Edit2: TEdit
  Left = 88
  Top = 48
  Width = 300
  Height = 23
  TabOrder = 1
  Text = 'Edit2'
end
object Button1: TButton
  Left = 205
  Top = 88
  Width = 88
  Height = 26
  Caption = 'OK'
  Default = True
  ModalResult = 1
  TabOrder = 2
end
object Button2: TButton
  Left = 300
  Top = 88
  Width = 88
  Height = 26
  Cancel = True
  Caption = #12461#12515#12531#12475#12523
  ModalResult = 2
  TabOrder = 3
end

implementation

{$R *.dfm}

uses
  frmuGotoLine,
  frmuHeaderFooter;  // <-- 追加

  private
    { Private 宣言 }
    FFileName: String;
    FEncodingIndex: Integer;
    FHeaderStr: string;       // <-- 追加
    FFooterStr: string;       // <-- 追加
    procedure DispRowCol;
    procedure Init;
    procedure PrintText(const HeaderStr, FooterStr: string);
    procedure SaveFile;
    procedure UpdateCaption;
  public
    { Public 宣言 }
  end;

procedure TForm1.FormCreate(Sender: TObject);
// フォーム作成時
begin
  FHeaderStr := '&f';
  FFooterStr := 'ページ(&p)';
  Init;
end;

procedure TForm1.acPrintExecute(Sender: TObject);
// Action: 印刷(P)
begin
  PrintText(FHeaderStr, FFooterStr);
end;

procedure TForm1.acHeaderFooterExecute(Sender: TObject);
// Action: ヘッダーとフッター(H)
begin
  Form3 := TForm3.Create(Self);
  try
    // ヘッダー文字列とフッター文字列を Form3 に渡す
    Form3.Edit1.Text := FHeaderStr;
    Form3.Edit2.Text := FFooterStr;
    // Form3 をモーダルで表示
    if Form3.ShowModal = mrOK then
      begin
        // [OK] ボタンが押されたら
        FHeaderStr := Form3.Edit1.Text;
        FFooterStr := Form3.Edit2.Text;
      end;
  finally
    Form3.Free;
  end;
end;

unit frmuMain;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, System.Actions,
  Vcl.ActnList, Vcl.Menus, Vcl.ExtDlgs, System.IOUtils, Vcl.Clipbrd,
  System.RegularExpressions, System.UITypes, Vcl.ComCtrls, WinAPI.ShellAPI, Vcl.Printers, System.Math;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    MainMenu1: TMainMenu;
    ActionList1: TActionList;
    acNew: TAction;
    acOpen: TAction;
    acSave: TAction;
    acSaveAs: TAction;
    acPageSetup: TAction;
    acPrint: TAction;
    acExit: TAction;
    F1: TMenuItem;
    N1: TMenuItem;
    O1: TMenuItem;
    S1: TMenuItem;
    A1: TMenuItem;
    U1: TMenuItem;
    P1: TMenuItem;
    X1: TMenuItem;
    N2: TMenuItem;
    N3: TMenuItem;
    OpenTextFileDialog1: TOpenTextFileDialog;
    SaveTextFileDialog1: TSaveTextFileDialog;
    acUndo: TAction;
    acCut: TAction;
    acCopy: TAction;
    acPaste: TAction;
    acDelete: TAction;
    acFind: TAction;
    acFindNext: TAction;
    acReplace: TAction;
    acGoTo: TAction;
    acSelectAll: TAction;
    acTimeDate: TAction;
    E1: TMenuItem;
    U2: TMenuItem;
    N4: TMenuItem;
    C1: TMenuItem;
    T1: TMenuItem;
    P2: TMenuItem;
    L1: TMenuItem;
    N5: TMenuItem;
    F2: TMenuItem;
    N6: TMenuItem;
    R1: TMenuItem;
    G1: TMenuItem;
    N7: TMenuItem;
    A2: TMenuItem;
    D1: TMenuItem;
    FindDialog1: TFindDialog;
    ReplaceDialog1: TReplaceDialog;
    acWordwrap: TAction;
    acFont: TAction;
    O2: TMenuItem;
    W1: TMenuItem;
    F3: TMenuItem;
    FontDialog1: TFontDialog;
    acStatusBar: TAction;
    N8: TMenuItem;
    S2: TMenuItem;
    StatusBar1: TStatusBar;
    acHelp: TAction;
    acAbout: TAction;
    H1: TMenuItem;
    H2: TMenuItem;
    A3: TMenuItem;
    N9: TMenuItem;
    PageSetupDialog1: TPageSetupDialog;
    PrintDialog1: TPrintDialog;
    acHeaderFooter: TAction;
    H3: TMenuItem;
    procedure FormCreate(Sender: TObject);
    procedure acExitExecute(Sender: TObject);
    procedure acOpenExecute(Sender: TObject);
    procedure acSaveExecute(Sender: TObject);
    procedure acSaveAsExecute(Sender: TObject);
    procedure acNewExecute(Sender: TObject);
    procedure acUndoExecute(Sender: TObject);
    procedure ActionList1Update(Action: TBasicAction; var Handled: Boolean);
    procedure acCutExecute(Sender: TObject);
    procedure acCopyExecute(Sender: TObject);
    procedure acPasteExecute(Sender: TObject);
    procedure E1Click(Sender: TObject);
    procedure acFindExecute(Sender: TObject);
    procedure Dialog_Find(Sender: TObject);
    procedure acFindNextExecute(Sender: TObject);
    procedure acDeleteExecute(Sender: TObject);
    procedure acReplaceExecute(Sender: TObject);
    procedure ReplaceDialog1Replace(Sender: TObject);
    procedure acGoToExecute(Sender: TObject);
    procedure acSelectAllExecute(Sender: TObject);
    procedure acTimeDateExecute(Sender: TObject);
    procedure acWordwrapExecute(Sender: TObject);
    procedure acFontExecute(Sender: TObject);
    procedure StatusBar1Resize(Sender: TObject);
    procedure Memo1Click(Sender: TObject);
    procedure Memo1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure acStatusBarExecute(Sender: TObject);
    procedure acHelpExecute(Sender: TObject);
    procedure acAboutExecute(Sender: TObject);
    procedure acPageSetupExecute(Sender: TObject);
    procedure acPrintExecute(Sender: TObject);
    procedure acHeaderFooterExecute(Sender: TObject);
  private
    { Private 宣言 }
    FFileName: String;
    FEncodingIndex: Integer;
    FHeaderStr: string;
    FFooterStr: string;
    procedure DispRowCol;
    procedure Init;
    procedure PrintText(const HeaderStr, FooterStr: string);
    procedure SaveFile;
    procedure UpdateCaption;
  public
    { Public 宣言 }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  frmuGotoLine,
  frmuHeaderFooter;

procedure TForm1.FormCreate(Sender: TObject);
// フォーム作成時
begin
  FHeaderStr := '&f';
  FFooterStr := 'ページ(&p)';
  Init;
end;

procedure TForm1.StatusBar1Resize(Sender: TObject);
// ステータスバーのリサイズ
begin
  StatusBar1.Panels[1].Width := StatusBar1.Width div 4;
  StatusBar1.Panels[0].Width := StatusBar1.Width - StatusBar1.Panels[1].Width;
end;

procedure TForm1.Memo1Click(Sender: TObject);
// Memo1 クリック時
begin
  DispRowCol;
end;


procedure TForm1.Memo1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
// Memo1 キーアップ時
begin
  DispRowCol;
end;

// [FILE] Actions

procedure TForm1.acNewExecute(Sender: TObject);
// Action: 新規(N)
begin
  Init;
end;

procedure TForm1.acOpenExecute(Sender: TObject);
// Action: 開く(O)...
var
  Enc: TEncoding;
begin
  if OpenTextFileDialog1.Execute then
    begin
      // 値を保存
      FFileName := OpenTextFileDialog1.FileName;
      FEncodingIndex := OpenTextFileDialog1.EncodingIndex;
      // キャプションを変更
      UpdateCaption;
      // EncodingIndex によりエンコーディングを指定
      case FEncodingIndex of
        1: Enc := TEncoding.Unicode;
        2: Enc := TEncoding.BigEndianUnicode;
        3: Enc := TEncoding.UTF8;
      else
        Enc := TEncoding.Default;
      end;
      // エンコーディングを指定して読み込み
      Memo1.Lines.LoadFromFile(FFileName, Enc);
    end;
end;

procedure TForm1.acSaveExecute(Sender: TObject);
// Action: 上書き保存(S)
begin
  if (FFileName = '') then
    begin
      // 名前を付けて保存
      acSaveAs.Execute;
    end
  else
    begin
      // 上書き保存
      SaveFile;
    end;
end;

procedure TForm1.acSaveAsExecute(Sender: TObject);
// Action: 名前を付けて保存(A)...
begin
  if SaveTextFileDialog1.Execute then
    begin
      // 値を保存
      FFileName := SaveTextFileDialog1.FileName;
      FEncodingIndex := SaveTextFileDialog1.EncodingIndex;
      // キャプションを変更
      UpdateCaption;
      // ファイルへ保存
      SaveFile;
    end;
end;

procedure TForm1.acPageSetupExecute(Sender: TObject);
// Action: ページ設定(U)...
begin
  PageSetupDialog1.Execute;
end;

procedure TForm1.acHeaderFooterExecute(Sender: TObject);
// Action: ヘッダーとフッター(H)
begin
  Form3 := TForm3.Create(Self);
  try
    // ヘッダー文字列とフッター文字列を Form3 に渡す
    Form3.Edit1.Text := FHeaderStr;
    Form3.Edit2.Text := FFooterStr;
    // Form3 をモーダルで表示
    if Form3.ShowModal = mrOK then
      begin
        // [OK] ボタンが押されたら
        FHeaderStr := Form3.Edit1.Text;
        FFooterStr := Form3.Edit2.Text;
      end;
  finally
    Form3.Free;
  end;
end;

procedure TForm1.acPrintExecute(Sender: TObject);
// Action: 印刷(P)
begin
  PrintText(FHeaderStr, FFooterStr);
end;

procedure TForm1.acExitExecute(Sender: TObject);
// Action: メモ帳の終了(X)
begin
  Self.Close;
end;

// [EDIT] Actions

procedure TForm1.E1Click(Sender: TObject);
begin
  acDelete.ShortCut := TextToShortCut('Del');
end;

procedure TForm1.acUndoExecute(Sender: TObject);
// Action: 元に戻す(U)
begin
  Memo1.Undo;
end;

procedure TForm1.acCutExecute(Sender: TObject);
// Action: 切り取り(T)
begin
  Memo1.CutToClipboard;
end;

procedure TForm1.acCopyExecute(Sender: TObject);
// Action: コピー(C)
begin
  Memo1.CopyToClipboard;
end;

procedure TForm1.acPasteExecute(Sender: TObject);
// Action: 貼り付け(P)
begin
  Memo1.PasteFromClipboard;
end;

procedure TForm1.acDeleteExecute(Sender: TObject);
// Action: 削除(L)
begin
  Memo1.ClearSelection;
end;

procedure TForm1.acFindExecute(Sender: TObject);
// Action: 検索(F)
begin
  // 検索ダイアログを開く
  FindDialog1.Execute;
end;

procedure TForm1.acFindNextExecute(Sender: TObject);
// Action: 次を検索(N)
begin
  if FindDialog1.FindText = '' then
    acFind.Execute
  else
    Dialog_Find(FindDialog1);
end;

procedure TForm1.acReplaceExecute(Sender: TObject);
// Action: 置換(H)
begin
  // 置換ダイアログを開く
  ReplaceDialog1.Execute;
end;

procedure TForm1.Dialog_Find(Sender: TObject);
// 検索イベントハンドラ
var
  RegEx: TRegEx;
  Exp, Msg: String;
  Options: TRegExOptions;
  Match, dMatch: TMatch;
  StartPos, EndPos: Integer;
begin
  // 検索文字列を正規表現文字列へエスケープ
  Exp := TRegEx.Escape(FindDialog1.FindText);

  // "大文字と小文字を区別する" にチェックが入っていなければ
  // オプションに roIgnoreCase (大文字小文字を区別しない) を追加
  if not (frMatchCase in FindDialog1.Options) then
    Include(Options, roIgnoreCase);

  // 正規表現オブジェクトの生成
  RegEx := TRegEx.Create(Exp, Options);

  if (frDown in FindDialog1.Options) then
    begin
      // 順方向検索 (下へ)
      StartPos  := Memo1.SelStart + Memo1.SelLength + 1;
      Match := RegEx.Match(Memo1.Lines.Text, StartPos);
    end
  else
    begin
      // 逆方向検索 (上へ)
      StartPos := 0;
      EndPos   := Memo1.SelStart + 1;
      Match := RegEx.Match(Memo1.Lines.Text, StartPos, EndPos);
      while Match.Success do
        begin
          // 最後にマッチした箇所を探す
          dMatch := Match.NextMatch;
          if dMatch.Success then
            Match := dMatch
          else
            break;
        end;
    end;

  // 検索文字列を共有
  FindDialog1.FindText := (Sender as TFindDialog).FindText;
  ReplaceDialog1.FindText := (Sender as TFindDialog).FindText;

  // 検索文字列を正規表現文字列へエスケープ
  Exp := TRegEx.Escape((Sender as TFindDialog).FindText);

  // "大文字と小文字を区別する" にチェックが入っていなければ
  // オプションに roIgnoreCase (大文字小文字を区別しない) を追加
  if not (frMatchCase in (Sender as TFindDialog).Options) then
    Include(Options, roIgnoreCase);

  // 正規表現オブジェクトの生成
  RegEx := TRegEx.Create(Exp, Options);
  if (frDown in (Sender as TFindDialog).Options) then
    begin
      // 順方向検索 (下へ)
      StartPos  := Memo1.SelStart + Memo1.SelLength + 1;
      Match := RegEx.Match(Memo1.Lines.Text, StartPos);
    end
  else
    begin
      // 逆方向検索 (上へ)
      StartPos := 0;
      EndPos   := Memo1.SelStart + 1;
      Match := RegEx.Match(Memo1.Lines.Text, StartPos, EndPos);
      while Match.Success do
        begin
          // 最後にマッチした箇所を探す
          dMatch := Match.NextMatch;
          if dMatch.Success then
            Match := dMatch
          else
            break;
        end;
    end;

  if Match.Success then
    begin
      // 一致する文字列があった
      SetFocus;
      Memo1.SelStart := Match.Index - 1;
      Memo1.SelLength := Match.Length;
    end
  else
    begin
      // 一致する文字列がなかった
      Msg := Format('"%s" が見つかりません。', [(Sender as TFindDialog).FindText]);
      MessageDlg(Msg, TMsgDlgType.mtInformation, [TMsgDlgBtn.mbOK], -1);
    end;
end;

procedure TForm1.ReplaceDialog1Replace(Sender: TObject);
// 置換イベントハンドラ
var
  srFlgs: TReplaceFlags;
  FindText: string;
  SelectFlg: Boolean;
begin
  // 検索文字列を共有
  FindDialog1.FindText := (Sender as TFindDialog).FindText;
  ReplaceDialog1.FindText := (Sender as TFindDialog).FindText;

  // フラグ
  if (frReplaceAll in ReplaceDialog1.Options) then
    begin
      // [すべて置換]
      srFlgs := [rfReplaceAll]; // すべて置換
      if  not (frMatchCase in ReplaceDialog1.Options) then
        Include(srFlgs, rfIgnoreCase);
      Memo1.Lines.Text := StringReplace(Memo1.Lines.Text, ReplaceDialog1.FindText, ReplaceDialog1.ReplaceText, srFlgs);
    end
  else
    begin
      // [置換して次へ]
      srFlgs := []; // 最初の一回だけ置換
      if  not (frMatchCase in ReplaceDialog1.Options) then
        Include(srFlgs, rfIgnoreCase);
      // 検索済みかどうかの判定
      FindText := (Sender as TFindDialog).FindText;
      if (frMatchCase in ReplaceDialog1.Options) then
        SelectFlg := SameStr(Memo1.SelText, FindText)   // 大文字小文字を区別する
      else
        SelectFlg := SameText(Memo1.SelText, FindText); // 大文字小文字を区別しない
      // 検索済みか？
      if SelectFlg then
        Memo1.SelText := ReplaceDialog1.ReplaceText;
      // 検索
      Dialog_Find(ReplaceDialog1);
    end;
end;

procedure TForm1.acGoToExecute(Sender: TObject);
// Action: 行へ移動(G)
begin
  Form2 := TForm2.Create(Self);
  try
    // 現在行と最大行を Form2 に渡す
    Form2.GotoLine := Memo1.Perform(EM_LINEFROMCHAR, WPARAM(-1), 0) + 1; // 0 オリジンなので + 1 する
    Form2.LineCount := Memo1.Perform(EM_GETLINECOUNT, 0, 0);
    // Form2 をモーダルで表示
    if Form2.ShowModal = mrOK then
      begin
        // [OK] ボタンが押されたら
        Memo1.SelLength := 0;
        Memo1.SelStart := Memo1.Perform(EM_LINEINDEX, Form2.GotoLine - 1, 0);
        Memo1.Perform(EM_SCROLLCARET,0 , 0);
      end;
  finally
    Form2.Free;
  end;
end;

procedure TForm1.acSelectAllExecute(Sender: TObject);
// Action: すべて選択(A)
begin
  Memo1.SelectAll;
end;

// [FORMAT] Actions

procedure TForm1.acTimeDateExecute(Sender: TObject);
// Action: 日付と時刻(D)
begin
  Memo1.SelText := FormatDateTime('hh:nn yyyy/mm/dd', Now);
end;

procedure TForm1.acWordwrapExecute(Sender: TObject);
// Action: [右側で折り返す(W)]
const
  SB: array [Boolean] of TScrollStyle = (ssBoth, ssVertical);
begin
  Memo1.WordWrap := not Memo1.WordWrap;
  Memo1.ScrollBars := SB[Memo1.WordWrap];
  if Memo1.WordWrap then         // <-- 追加
    StatusBar1.Visible := False; // <-- 追加
end;

procedure TForm1.acFontExecute(Sender: TObject);
// Action: [フォント(F)...]
begin
  FontDialog1.Font := Memo1.Font;   // Memo1 のフォントをコピー
  if FontDialog1.Execute then
    Memo1.Font := FontDialog1.Font; // FontDialog1 のフォントをコピー
end;

// [VIEW] Actions

procedure TForm1.acStatusBarExecute(Sender: TObject);
// Action: [ステータスバー(S)]
begin
  StatusBar1.Visible := not StatusBar1.Visible;
end;

// [HELP] Actions

procedure TForm1.acHelpExecute(Sender: TObject);
// Action: [ヘルプ(H)]
var
  URL: string;
begin
  URL := 'https://www.embarcadero.com/jp/products/delphi';
  ShellExecute(0, 'open', PWideChar(URL), nil, nil, SW_SHOWNORMAL);
end;

procedure TForm1.acAboutExecute(Sender: TObject);
// Action: [バージョン情報(A)]
begin
  ShellAbout(Self.Handle, 'メモ帳クローン', '', Application.Icon.Handle);
end;

// リスト更新

procedure TForm1.ActionList1Update(Action: TBasicAction; var Handled: Boolean);
begin
  // [元に戻す(U)] の有効/無効
  acUndo.Enabled := Memo1.CanUndo;
  // [切り取り(T)] の有効/無効
  acCut.Enabled := Memo1.SelLength <> 0;
  // [コピー(C)] の有効/無効
  acCopy.Enabled := Memo1.SelLength <> 0;
  // [貼り付け(P)] の有効/無効
  acPaste.Enabled := ClipBoard.HasFormat(CF_TEXT);
  // [削除(L)] の有効/無効
  acDelete.Enabled := Memo1.SelLength <> 0;
  acDelete.ShortCut := 0;
  // [検索(F)] の有効/無効
  acFind.Enabled := Memo1.Lines.Text.Length > 0;
  // [次を検索(N)] の有効/無効
  acFindNext.Enabled := Memo1.Lines.Text.Length > 0;
  // [右側で折り返す(W)] のチェック状態
  acWordwrap.Checked := Memo1.WordWrap;
  // [行へ移動(&G)] の有効/無効
  acGoTo.Enabled := not Memo1.WordWrap;
  // [ステータスバー(S)] の有効/無効
  acStatusBar.Enabled := not Memo1.WordWrap;
  // [ステータスバー(S)] のチェック状態
  acStatusBar.Checked := StatusBar1.Visible;
end;

// メソッド

procedure TForm1.DispRowCol;
var
  Row, Col: Integer;
begin
  // ステータスバーに行/列を表示
  Row := Memo1.Perform(EM_LINEFROMCHAR, Memo1.SelStart, 0);
  Col := Memo1. SelStart -  Memo1.Perform(EM_LINEINDEX, WPARAM(ROW), 0);
  StatusBar1.Panels[1].Text := Format(' %d行、%d列' , [Row + 1, Col + 1]);
end;

procedure TForm1.Init;
// エディタの初期化
begin
 // 値を初期化
  FFileName := '';
  FEncodingIndex := 0;
  Memo1.Lines.Clear; // Memo1 の中身を消去する。
  // キャプションを変更
  UpdateCaption;
  // 行/列の表示
  DispRowCol;
end;

procedure TForm1.PrintText(const HeaderStr, FooterStr: string);
// 印刷ロジック
const
  DRAW_FLG = DT_NOPREFIX or DT_TOP or DT_LEFT or DT_WORDBREAK;
  CALC_FLG = DRAW_FLG or DT_CALCRECT;
var
  i, l, j, Index, LineCount, Sum, TextHeight, X_DPI, Y_DPI, PAGE_HEIGHT,
  PAPER_WIDTH, PAPER_HEIGHT, MIN_HEIGHT, Copies: Integer;
  PrintRect, CalcRect, CalcRect2, HeaderRect, FooterRect: TRect;
  Text: String;
  SL : TStringList;
  Pages: array of Integer;
  { DrawHeaderFooter End}
  procedure DrawHeaderFooter(const AStr: string; ARect: TRect; AFlgs: Integer; APage: Integer);
  var
    Flgs: Integer;
    AlignFlg: Integer;
    P: PChar;
    Str: string;
    ChangeAlign: Boolean;
  begin
    if AStr = '' then
      Exit;
    Flgs := AFlgs or DT_NOPREFIX or DT_SINGLELINE;
    AlignFlg := DT_CENTER;
    Str := '';
    P := @AStr[1];
    while (P^ <> #$00) do
      begin
        if P^ = '&' then
          begin
            Inc(P);
            if P^ = #$00 then
              Break;
            ChangeAlign := False;
            case UpCase(P^) of
              'L', 'C', 'R':
                ChangeAlign := True;
              'D':
                Str := Str + FormatDateTime('YYYY"年"M"月"M"日"', Date);
              'T':
                Str := Str + FormatDateTime('h:n:s', Time);
              'F':
                begin
                  if FFileName = '' then
                    Str := Str + '無題'
                  else
                    Str := Str + TPath.GetFileName(FFileName);
                end;
              'P':
                Str := Str + APage.ToString;
              '&':
                Str := Str + '&';
            end;
            if (Str <> '') and ChangeAlign then
              begin
                DrawText(Printer.Canvas.Handle, PChar(Str), Length(Str), ARect, Flgs or AlignFlg);
                Str := '';
              end;
            case UpCase(P^) of
              'L': AlignFlg := DT_LEFT;
              'C': AlignFlg := DT_CENTER;
              'R': AlignFlg := DT_RIGHT;
            end;
          end
        else
          Str := Str + P^;
        Inc(P);
      end;
    if Str <> '' then
      begin
        DrawText(Printer.Canvas.Handle, PChar(Str), Length(Str), ARect, Flgs or AlignFlg);
        Str := '';
      end;
  end;
  { DrawHeaderFooter End}
  { DrawHeader Begin}
  procedure DrawHeader(APage: Integer);
  begin
    DrawHeaderFooter(HeaderStr, HeaderRect, DT_TOP, APage);
  end;
  { DrawHeader End}
  { DrawFooter Begin}
  procedure DrawFooter(APage: Integer);
  begin
    DrawHeaderFooter(FooterStr, FooterRect, DT_BOTTOM, APage);
  end;
  { DrawFooter End}
begin
  if not PrintDialog1.Execute then
    Exit;

  // プリンタの DPI
  X_DPI := GetDeviceCaps(Printer.Handle, LOGPIXELSX);
  Y_DPI := GetDeviceCaps(Printer.Handle, LOGPIXELSY);

  // 用紙の幅と高さ
  PAPER_WIDTH  := GetDeviceCaps(Printer.Handle, PHYSICALWIDTH );
  PAPER_HEIGHT := GetDeviceCaps(Printer.Handle, PHYSICALHEIGHT);

  // 印刷領域
  PrintRect.Top    :=                Trunc(PageSetupDialog1.MarginTop    / 2540 * Y_DPI);
  PrintRect.Left   :=                Trunc(PageSetupDialog1.MarginLeft   / 2540 * X_DPI);
  PrintRect.Bottom := PAPER_HEIGHT - Trunc(PageSetupDialog1.MarginBottom / 2540 * Y_DPI);
  PrintRect.Right  := PAPER_WIDTH  - Trunc(PageSetupDialog1.MarginRight  / 2540 * X_DPI);

  // 印刷
  Printer.BeginDoc;
  SetBkMode(Printer.Canvas.Handle, TRANSPARENT);
  Printer.Canvas.Font.Assign(Memo1.Font); // Memo1 のフォントを Canvas に割り当て

  Text := 'A';
  CalcRect := Rect(0, 0, Printer.PageWidth, 0);
  DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, CALC_FLG);
  MIN_HEIGHT := CalcRect.Bottom;

  if HeaderStr <> '' then
    begin
      HeaderRect := PrintRect;
      HeaderRect.Bottom := PrintRect.Top + MIN_HEIGHT * 2;
      PrintRect.Top := HeaderRect.Bottom;
    end;
  if FooterStr <> '' then
    begin
      FooterRect := PrintRect;
      FooterRect.Top := PrintRect.Bottom - MIN_HEIGHT * 2;
      PrintRect.Bottom := FooterRect.Top;
    end;
  PAGE_HEIGHT := PrintRect.Bottom - PrintRect.Top;

  SetLength(Pages, 1);
  SL := TStringList.Create;
  try
    SL.Text := Memo1.Lines.Text;

    // ページ数の計算
    LineCount := 0;
    Sum := 0;
    for i:=0 to SL.Count-1 do
      begin
        Text := SL[i];
        CalcRect := PrintRect;
        CalcRect.Top    := 0;
        CalcRect.Bottom := 0;
        DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, CALC_FLG);
        TextHeight := Max(MIN_HEIGHT, CalcRect.Bottom);
        if (Sum + TextHeight) > PAGE_HEIGHT then
          begin
            Pages[Length(Pages)-1] := LineCount;
            SetLength(Pages, Length(Pages) + 1);
            LineCount := 0;
            Sum := 0;
          end;
        Inc(LineCount);
        Inc(Sum, TextHeight);
      end;
    LineCount := SL.Count;
    for i:=0 to Length(Pages) - 2 do
      Dec(LineCount, Pages[i]);
    Pages[Length(Pages)-1] := LineCount;

    // 印刷
    if PrintDialog1.Collate then
      Copies := PrintDialog1.Copies // 部単位で印刷
    else
      Copies := 1;
    for j:=1 to Copies do
      begin
        CalcRect := PrintRect;
        Index := 0;
        for l:=0 to Length(Pages) - 1 do
          begin
            // ヘッダ
            DrawHeader(l+1);
            // テキスト
            CalcRect.Top := PrintRect.Top;
            for i:=0 to Pages[l] - 1 do
              begin
                CalcRect2 := PrintRect;
                CalcRect2.Top := 0;
                CalcRect2.Bottom := 0;
                Text := SL[Index];
                DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect2, CALC_FLG);
                TextHeight := Max(MIN_HEIGHT, CalcRect2.Bottom);
                DrawText(Printer.Canvas.Handle, PChar(Text), Length(Text), CalcRect, DRAW_FLG);
                CalcRect.Top := CalcRect.Top + TextHeight;
                Inc(Index);
              end;
            // フッタ
            DrawFooter(l+1);
            // 改ページ
            if (l <> (Length(Pages) - 1)) or (J <> Copies) then
              Printer.NewPage;
          end;
      end;
  finally
    SL.Free;
  end;
  Printer.EndDoc;
end;

procedure TForm1.SaveFile;
var
  Enc: TEncoding;
begin
  // EncodingIndex によりエンコーディングを指定
  case FEncodingIndex of
    1: Enc := TEncoding.Unicode;
    2: Enc := TEncoding.BigEndianUnicode;
    3: Enc := TEncoding.UTF8;
  else
    Enc := TEncoding.Default;
  end;
  // エンコーディングを指定して保存
  Memo1.Lines.SaveToFile(FFileName, Enc);
end;

procedure TForm1.UpdateCaption;
// キャプション (ファイル名) の更新
var
  Dmy: String;
begin
  if FFileName = '' then
    Dmy := '無題'
  else
    Dmy := TPath.GetFileName(FFileName);
  Self.Caption := Dmy + ' - メモ帳クローン';
end;

end.