Delphi 记事本 TMemo

Windows记事本记事本

 

 

描述：

    用Delphi模仿的Windows记事本 界面和功能都和Windows的记事本一样,是用Memo实现的而不是RichEdit

可以执行以下功能 文件 打开,保存,打印， 页面设置，撤销,复制，粘贴，查找，替换，插入时间日期，转到行，

保存窗体大小 位置 和读取配置信息支持拖拽文件到记事本中...

 下载地址：http://download.csdn.net/detail/teststudio/6414215

难点

    对文件的新建 打开 保存 另存 退出文件件是否保存的判断

    TMemo的打印和页面设置

    TMemo的文字查找和替换

 

 

Memo的常用属性

    property Align;
    property Enabled;
    property Font;
    property HideSelection;  当其值为False时 当Memo不是Active时 选中的文本任然可以看见。这个在FindDialog ReplaceDialog中有用，因为不用这样Memo1.SetFocus;
    property Lines;
    property PopupMenu;
    property ReadOnly;
    property ScrollBars;
    property TabOrder;
    property TabStop;
    property Visible;
    property WantReturns; //按回车是否自动换行
    property WantTabs;//当其什为True时 在Memo里面按Tab键会自动增加8个空格
    property WordWrap;//自动换行

Memo的常用事件

    property OnChange;
    property OnClick;
    property OnContextPopup;
    property OnEnter;
    property OnKeyDown;
    property OnKeyPress;
    property OnKeyUp;

Memo的常用方法

TCustomEdit 
    procedure Clear; //清空
    procedure ClearSelection;//删除选中的文本
    procedure CopyToClipboard;//复制到剪切板
    procedure CutToClipboard;//剪切到剪切板
    procedure PasteFromClipboard;//粘贴
    procedure Undo;//撤销
    procedure ClearUndo;//清除撤销
    procedure SetSelText(const Value: string);//设置选中的文本
    procedure SelectAll;//全选
    property CanUndo;//是否可以撤销
    property Modified;//文档是否被 修改
    property SelStart;//被选中文本的开始位置
    property SelLength; //选中的文本长度(字符个数)
    property SelText;//选中的文本

 

文件操作               

新建,打开,保存,另存    传送门 http://www.cnblogs.com/xe2011/p/3374003.html

 

新建

  Memo1.Lines.Clear;
  Memo1.Modified := False;

打开      

procedure TForm1.Button1Click(Sender: TObject);
begin
  with TOpenDialog.Create(nil) do
  begin
    Filter := '文本文档(*.txt)|*.txt|所有文件(*.*)|*.*';
    FileName := '*.txt';
    if Execute then
    begin
      Memo1.Lines.LoadFromFile(FileName);
      Memo1.ReadOnly := ofReadOnly in Options;
    end;
  end;
end;

保存  

     Memo1.Lines.SaveToFile(FileName);
     Memo1.Modified := False;   

另存   

procedure TForm1.Button1Click(Sender: TObject);
begin
  with TSaveDialog.Create(nil) do
  begin
    Filter := '文本文档(*.txt)|*.txt|所有文件(*.*)|*.*';
    FileName := '*.txt';
    if Execute then
    begin
      if FileExists(FileName) then
        if MessageBox(Handle, PWideChar(Format('%s 已存在。' + #13#10 + '要替换它吗？', [FileName])),
          PWideChar('提示'), MB_YESNO + MB_ICONINFORMATION) <> idYes then
          Exit;
      Memo1.Lines.SaveToFile(FileName);
      Memo1.Modified := False;
    end;
  end;
end;

打印

    页面设置

       我认为这句代码只显示出样式而实际上没有任何作用
       With TPageSetupDialog.Create(nil) do
            Execute;

打印

       传送门   http://www.cnblogs.com/xe2011/p/3374229.html

 

退出 

     Close

 

编辑                      

    撤销                   

    剪切

    复制

    粘贴

    删除

    全选  

    Memo1.Undo;  //撤销
    Memo1.CutToClipboard;//剪切
    Memo1.CopyToClipboard;//复制
    Memo1.PasteFromClipboard;//粘贴
    Memo1.ClearSelection;//删除
    Memo1.SelectAll;//全选
    Memo1.Clear; //清空

注

  这里为了 设置快捷键的时候菜单的快捷键不要设置 用字符串 否则在

调用查找对话框的时候再使用Ctrl+V ,Ctrl+X,Ctrl+C行快捷键就无效了

撤销问题

delphi Memo的撤销问题
当手动修改Memo里面的文本时使用Ctrl+Z可以撤销
当使用代码设置Memo文本时如 Memo1.text:='aaaaa';设置后 Ctrl+Z 撤销就无效了
请问如何让使用代码设置的文本 Ctrl+Z撤销有效

 

 

需要引用Commctrl单元，代码如下：
var
  NewText: PChar;
begin
  NewText := 'aaaaa';
  //全选Memo1的所有文本
  SendMessage(Memo1.Handle,EM_SETSEL,0,-1);
  //将Memo1的所选文本替换为新文本
  SendMessage(Memo1.Handle,EM_REPLACESEL,-1,LPARAM(NewText));
end;
详细原因可以参考msdn中关于EM_REPLACESEL的相关描述

查找/替换  

 传送门 http://www.cnblogs.com/xe2011/p/3370865.html

 

转到

 在Windows记事本中当Memo不能自动换行时 才能使用 转到的功能

 

procedure TForm1.GoToMemoLineDialog(Memo: TMemo);
var
  LineIndex1, LineLength1, selStart1, Line, i: Integer;
begin
  selStart1 := 0;
  Line := strtoint(inputbox(sGoToTitle, sGoToTips,
    inttostr(Memo.CaretPos.Y + 1))) - 1;
 
  if (Line > 0) and (Line <= Memo.Lines.Count) then
    for i := 0 to Line - 1 do
    begin
      LineIndex1 := SendMessage(Memo.Handle, EM_LINEINDEX, i, 0);
      LineLength1 := SendMessage(Memo.Handle, EM_LINELENGTH, LineIndex1, 0) + 2;
      selStart1 := selStart1 + LineLength1;
    end
  else if Line = 0 then
    Memo.SelStart := selStart1
  else
    Application.MessageBox(PWideChar('行数超出了总行数'), PWideChar('记事本 - 跳行'), 0);
    Memo.SelStart := selStart1;
end;
 
  GoToMemoLineDialog(Memo1);

  

时间/日期

 Memo1.SetSelText((FormatDateTime('hh:mm yyyy/m/dd', now))); // 插入时间/日期

自动换行 

Memo1.ScrollBars := ssVertical; // 自动换行
Memo1.WordWrap:=False;
Memo1.ScrollBars := ssBoth; // 取消自动换行
Memo1.WordWrap:=True; 

使用代码设置Edit的滚动条的出现 垂直的和水平的

 

字体...

应该调出像Window7的记事本那样的样式的字体对话框的  

with TFontDialog.Create(nil) do
  begin
    Font := Memo1.Font;
    Options := [fdApplyButton];
    if Execute() then
      Memo1.Font := Font;
  end;

 

 

查看                        

状态栏

 

查看帮助

   在Win7中 打开一个Windows程序按下 F1 就会打开 Windows帮助和支持 并且会转到相应的界面

 

关于记事本

   ShellAbout(Form1.Handle, PWideChar('记事本'),   '',  Application.Icon.Handle);

 

隐藏属性                                           

拖拽打开文件

private
    { Private declarations }
    procedure WMDropFiles(var Msg: TWMDropFiles); message WM_DROPFILES;
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
uses ShellApi;
{$R *.dfm}
 
procedure TForm1.FormCreate(Sender: TObject);
begin
    DragAcceptFiles(Handle, True);
end;
 
procedure TForm1.WMDropFiles(var Msg: TWMDropFiles);
var
  CFileName: array [0 .. MAX_PATH] of Char;
begin
  try
    if DragQueryFile(Msg.Drop, 0, CFileName, MAX_PATH) > 0 then
    begin
      Memo1.lines.loadFromFile(CFileName);
      Msg.Result := 0;
    end;
  finally
    DragFinish(Msg.Drop);
  end;
end;

 

Windows系统语言的判断

function GetUserDefaultUILanguage(): Integer; external 'Kernel32.DLL';
 
 if GetUserDefaultUILanguage() = $0804 then
   Caption:='简体中文'
  else
    Caption:='英文';

窗体的位置大小保存 注册表

uses Registry;
{$R *.dfm}
 
procedure ReadConfig();
var
  reg: TRegistry;
begin
  reg := TRegistry.Create;
  reg.RootKey := HKEY_LOCAL_MACHINE;
  if reg.OpenKey('SoftWareTestudoNotepad', False) then
  begin
    // Form Size& Position
    Form1.Width := reg.ReadInteger('Width');
    Form1.Height := reg.ReadInteger('Height');
    Form1.Left := reg.ReadInteger('Left');
    Form1.Top := reg.ReadInteger('Top');
 
    reg.CloseKey;
    reg.Free;
  end;
  // else ShowMessage('Faild');
end;
 
procedure WriteConfig();
var
  reg: TRegistry;
begin
  reg := TRegistry.Create;
  reg.RootKey := HKEY_LOCAL_MACHINE;
  reg.CreateKey('SoftWareTestudoNotepad');
  reg.OpenKey('SoftWareTestudoNotepad', False);
  // Form Size& Position
  reg.WriteInteger('Width', Form1.Width);
  reg.WriteInteger('Height', Form1.Height);
  reg.WriteInteger('Left', Form1.Left);
  reg.WriteInteger('Top', Form1.Top);
 
  reg.CloseKey;
  reg.Free;
end;
 
 
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
    WriteConfig();
end;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
    ReadConfig();
end;

 

Windows记事本的完整代码             

主窗体单元
unit Unit1;
 
interface
 
uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
  System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.Menus, Vcl.StdCtrls, Vcl.ComCtrls,
  Vcl.StdActns, Vcl.ActnList, Vcl.ExtActns, System.Actions, Vcl.ExtCtrls,
  Vcl.ExtDlgs;
 
function GetUserDefaultUILanguage(): Integer; external 'Kernel32.DLL';
 
type
  TForm1 = class(TForm)
    Memo1: TMemo;
    StatusBar1: TStatusBar;
    MainMenu1: TMainMenu;
    mni_File: TMenuItem;
    FileNew: TMenuItem;
    FileOpen: TMenuItem;
    FileSave: TMenuItem;
    FileSaveAs: TMenuItem;
    mni_PageSetup: TMenuItem;
    mni_Print: TMenuItem;
    mni_Exit: TMenuItem;
    mni_Edit: TMenuItem;
    mni_Undo: TMenuItem;
    mni_Cut: TMenuItem;
    mni_Copy: TMenuItem;
    mni_Paste: TMenuItem;
    mni_Delete: TMenuItem;
    mni_Find: TMenuItem;
    mni_FindNext: TMenuItem;
    mni_Replace: TMenuItem;
    mni_GoTo: TMenuItem;
    mni_SelectAll: TMenuItem;
    mni_DateTime: TMenuItem;
    mni_Format: TMenuItem;
    mni_Font: TMenuItem;
    mni_WordWrap: TMenuItem;
    mni_View: TMenuItem;
    mni_StatusBar: TMenuItem;
    mni_Help: TMenuItem;
    mni_ViewHelp: TMenuItem;
    mni_About: TMenuItem;
    mni_SetTopMoset: TMenuItem;
    FindDialog1: TFindDialog;
    ReplaceDialog1: TReplaceDialog;
    procedure FormResize(Sender: TObject);
    procedure mni_WordWrapClick(Sender: TObject);
    procedure mni_AboutClick(Sender: TObject);
    procedure mni_FontClick(Sender: TObject);
    procedure mni_DateTimeClick(Sender: TObject);
    procedure mni_GoToClick(Sender: TObject);
    procedure mni_StatusBarClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure act_WriteConfigExecute(Sender: TObject);
    procedure act_ReadConfigExecute(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure mni_PrintClick(Sender: TObject);
    procedure mni_SetTopMosetClick(Sender: TObject);
    procedure Memo1MouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure act_SetCaretPosExecute(Sender: TObject);
    procedure Memo1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure FindDialog1Find(Sender: TObject);
    procedure mni_DeleteClick(Sender: TObject);
    procedure mni_PasteClick(Sender: TObject);
    procedure mni_CopyClick(Sender: TObject);
    procedure mni_CutClick(Sender: TObject);
    procedure ReplaceDialog1Replace(Sender: TObject);
    procedure ReplaceDialog1Find(Sender: TObject);
    procedure mni_FindNextClick(Sender: TObject);
    procedure mni_FindClick(Sender: TObject);
    procedure mni_ReplaceClick(Sender: TObject);
    procedure mni_EditClick(Sender: TObject);
    procedure mni_UndoClick(Sender: TObject);
    procedure mni_PageSetupClick(Sender: TObject);
    procedure mni_ExitClick(Sender: TObject);
    procedure Memo1KeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure mni_SelectAllClick(Sender: TObject);
    procedure Memo1KeyPress(Sender: TObject; var Key: Char);
    procedure FileNewClick(Sender: TObject);
    procedure FileOpenClick(Sender: TObject);
    procedure FileSaveClick(Sender: TObject);
    procedure FileSaveAsClick(Sender: TObject);
    procedure mni_ViewHelpClick(Sender: TObject);
  private
    { Private declarations }
    FFileName: string;
    procedure CheckFileSave;
    procedure SetFileName(const FileName: String);
    procedure PerformFileOpen(const AFileName: string);
    procedure WMDropFiles(var Msg: TWMDropFiles); message WM_DROPFILES;
 
    // ------------------------------------------------------------------------------
    // procedure WMDROPFILES(var MSg: TMessage); message WM_DROPFILES;
    procedure GoToMemoLineDialog(Memo: TMemo);
    procedure SetUiCHS();
    procedure SetUiEN();
    procedure MemoPrinter(Memo: TMemo; TitleStr: string = '无标题');
    // ------------------------------------------------------------------------------
 
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
  FindStr: string;
  bStatueBar: Boolean = False;
  // ------------------------------------------------------------------------------
 
implementation
 
uses
  ShellApi, Registry, Printers, Clipbrd, StrUtils,
  Unit2, Search;
{$R *.dfm}
 
resourcestring
  sSaveChanges = '是否将未更改保存到 %s?';
  sOverWrite = '%s 已存在。' + #13#10 + '要替换它吗？';
  sTitle = '记事本';
  sUntitled = '未命名';
  sColRowInfo = '行: %3d   列: %3d';
  sLine = '行'; //
  scol = '列';
  sGoToTitle = '转到指定行'; // 轮到行的 输入对话框的标题
  sGoToTips = '行号(&L):'; //
  sMsgBoxTitle = '行数超过了总行数';
  sFileDlgFilter = '文本文档(*.txt)|*.txt|所有文件(*.*)|*.*'; // 打开和保存的文本是一样的
 
procedure TForm1.CheckFileSave;
var
  SaveRespond: Integer;
begin
  if not Memo1.Modified then
    Exit;
  SaveRespond := MessageBox(Handle, PWideChar(Format(sSaveChanges, [FFileName])
    ), PWideChar(sTitle), MB_YESNOCANCEL + MB_ICONINFORMATION);
  case SaveRespond of
    idYes:
      FileSave.click;
    idNo:
      ; { Nothing }
    idCancel:
      Abort;
  end;
end;
 
procedure TForm1.SetFileName(const FileName: String);
begin
  FFileName := FileName;
  Caption := Format('%s - %s', [ExtractFileName(FileName), sTitle]);
end;
 
procedure TForm1.PerformFileOpen(const AFileName: string);
begin
  Memo1.Lines.LoadFromFile(AFileName);
  SetFileName(AFileName);
  Memo1.SetFocus;
  Memo1.Modified := False;
end;
 
procedure TForm1.WMDropFiles(var Msg: TWMDropFiles);
var
  CFileName: array [0 .. MAX_PATH] of Char;
begin
  try
    if DragQueryFile(Msg.Drop, 0, CFileName, MAX_PATH) > 0 then
    begin
      CheckFileSave;
      PerformFileOpen(CFileName);
      Msg.Result := 0;
    end;
  finally
    DragFinish(Msg.Drop);
  end;
end;
 
{ ReplaceDialog Find }
procedure TForm1.ReplaceDialog1Find(Sender: TObject);
begin
  with Sender as TReplaceDialog do
    if not SearchMemo(Memo1, FindText, Options) then
      MessageBox(Handle, PWideChar(Concat('找不到"', FindText, '"')), '记事本',
        MB_ICONINFORMATION);
end;
 
{ ReplaceDialog Replace }
procedure TForm1.ReplaceDialog1Replace(Sender: TObject);
var
  Found: Boolean;
begin
  with ReplaceDialog1 do
  begin
    { Replace }
    if (frReplace in Options) and (Memo1.SelText = FindText) then
      Memo1.SelText := ReplaceText;
    Found := SearchMemo(Memo1, FindText, Options);
 
    { Replace All }
    if (frReplaceAll in Options) then
    begin
      Memo1.SelStart := 0;
      while Found do
      begin
        if (Memo1.SelText = FindText) then
          Memo1.SelText := ReplaceText;
        Found := SearchMemo(Memo1, FindText, Options);
      end;
      if not Found then
        SendMessage(Form1.Memo1.Handle, WM_VSCROLL, SB_TOP, 0);
    end;
 
    if (not Found) and (frReplace in Options) then
      MessageBox(Handle, PWideChar(Concat('找不到"', FindText, '"')), '记事本',
        MB_ICONINFORMATION);
  end;
 
end;
 
procedure TForm1.FileNewClick(Sender: TObject);
begin
  CheckFileSave;
  SetFileName(sUntitled);
 
  Memo1.Lines.Clear;
  Memo1.Modified := False;
end;
 
procedure TForm1.FileOpenClick(Sender: TObject);
begin
  CheckFileSave;
 
  with TOpenDialog.Create(nil) do
  begin
    Filter := sFileDlgFilter;
    FileName := '*.txt';
    if Execute then
    begin
      PerformFileOpen(FileName);
      Memo1.ReadOnly := ofReadOnly in Options;
    end;
  end;
end;
 
procedure TForm1.FileSaveClick(Sender: TObject);
begin
  if FFileName = sUntitled then
    FileSaveAs.click
  else
  begin
    Memo1.Lines.SaveToFile(FFileName);
    Memo1.Modified := False;
  end;
end;
 
procedure TForm1.FileSaveAsClick(Sender: TObject);
begin
  with TSaveDialog.Create(nil) do
  begin
    Filter := sFileDlgFilter;
    FileName := '*.txt';
    if Execute then
    begin
      if FileExists(FileName) then
        if MessageBox(Handle, PWideChar(Format(sOverWrite, [FFileName])),
          PWideChar(sTitle), MB_YESNOCANCEL + MB_ICONINFORMATION) <> idYes then
          Exit;
      Memo1.Lines.SaveToFile(FileName);
      SetFileName(FileName);
      Memo1.Modified := False;
    end;
  end;
end;
 
procedure TForm1.FindDialog1Find(Sender: TObject);
begin
  with Sender as TFindDialog do
  begin
    FindStr := FindText;
    if not SearchMemo(Memo1, FindText, Options) then
      MessageBox(Handle, PWideChar(Concat('找不到"', FindText, '"')), '记事本',
        MB_ICONINFORMATION);
  end;
end;
 
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  if WindowState = wsMaximized then
    Exit;
  act_WriteConfigExecute(Sender);
  Action := caFree;
 
  CheckFileSave;
end;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
  SetFileName(sUntitled);
  DragAcceptFiles(Handle, True);
  // FindDialog1.Options := [frDown, frHideWholeWord];
  // ReplaceDialog1.Options := [frDown, frHideWholeWord];
  with Memo1 do
  begin
    HideSelection := False;
    ScrollBars := ssVertical;
    Align := alClient;
  end;
 
  act_SetCaretPosExecute(Sender);
 
  if GetUserDefaultUILanguage() = $0804 then
    SetUiCHS // Caption:='简体中文';
  else
    SetUiEN; // Caption:='英文';
 
  // Caption := Form1Title;
  act_ReadConfigExecute(Sender);
  bStatueBar := mni_StatusBar.Checked;
 
  if mni_WordWrap.Checked then
  begin
    mni_WordWrap.click;
    mni_WordWrap.Checked := True;
    // 可以自动换行
    Memo1.ScrollBars := ssVertical;
    Memo1.WordWrap := True;
    mni_GoTo.Enabled := False;
    mni_StatusBar.Checked := False;
    mni_StatusBar.Enabled := False;
    StatusBar1.Visible := False;
  end
  else
  begin
    // 不能换行
    Memo1.ScrollBars := ssBoth;
    Memo1.WordWrap := False;
    mni_GoTo.Enabled := True;
    mni_StatusBar.Enabled := True;
    StatusBar1.Visible := bStatueBar;
  end;
 
  bStatueBar := mni_StatusBar.Checked;
  mni_StatusBar.Checked := bStatueBar;
  StatusBar1.Panels[0].Width := (75 * StatusBar1.Width) div 100;
end;
 
procedure TForm1.FormResize(Sender: TObject);
begin
  StatusBar1.Panels[0].Width := (75 * StatusBar1.Width) div 100;
  // act_WriteConfigExecute(Sender);
end;
 
procedure TForm1.GoToMemoLineDialog(Memo: TMemo);
var
  LineIndex1, LineLength1, selStart1, Line, i: Integer;
begin
  selStart1 := 0;
  Line := strtoint(inputbox(sGoToTitle, sGoToTips,
    inttostr(Memo.CaretPos.Y + 1))) - 1;
 
  if (Line > 0) and (Line <= Memo.Lines.Count) then
    for i := 0 to Line - 1 do
    begin
      LineIndex1 := SendMessage(Memo.Handle, EM_LINEINDEX, i, 0);
      LineLength1 := SendMessage(Memo.Handle, EM_LINELENGTH, LineIndex1, 0) + 2;
      selStart1 := selStart1 + LineLength1;
    end
  else if Line = 0 then
    Memo.SelStart := selStart1
  else
    MessageBox(Handle,PWideChar('行数超出了总行数'), PWideChar('记事本 - 跳行'), 0);
    Memo.SelStart := selStart1;
end;
 
procedure TForm1.Memo1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  { 你猜在编辑菜单中为何不使用系统的HotKey而在这里用手动来实现快捷键
    去除声音
  }
  if (Shift = [ssCtrl]) and (Key = $46) then // 按下<Ctrl+F>
    mni_Find.click;
 
  if (Key = vk_F3) and mni_FindNext.Enabled then // F3
    mni_FindNext.click;
 
  if (Shift = [ssCtrl]) and (Key = $48) then // Ctrl+H
    mni_Replace.click;
 
  if (Shift = [ssCtrl]) and (Key = $47) and (not Memo1.WordWrap) then // Ctrl+G
    mni_GoTo.click;
 
  if (Shift = [ssCtrl]) and (Key = $41) then // Ctrl+A
    mni_SelectAll.click;
 
  if (Key = vk_F5) then // F5
    mni_DateTime.click;
end;
 
procedure TForm1.Memo1KeyPress(Sender: TObject; var Key: Char);
begin
  // F,H,G,A
  if (Key = #6) or (Key = #1) {or (Key = #8)} or (Key = #7) then
    Key := #0;
end;
 
procedure TForm1.Memo1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  act_SetCaretPosExecute(Sender);
end;
 
procedure TForm1.Memo1MouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  act_SetCaretPosExecute(Sender);
end;
 
// ------------------------------------------------------------------------------
{ Edit Menu Item Enable }
procedure TForm1.mni_EditClick(Sender: TObject);
begin
  mni_Find.Enabled := (Memo1.Text <> '');
  mni_FindNext.Enabled := (Memo1.Text <> '') and (FindStr <> '');
  mni_Replace.Enabled := (Memo1.Text <> '');
 
  mni_GoTo.Enabled := not Memo1.WordWrap;
  mni_Undo.Enabled := Memo1.Modified;
  mni_Cut.Enabled := (Memo1.SelLength > 0);
  mni_Copy.Enabled := (Memo1.SelLength > 0);
  mni_Paste.Enabled := Clipboard.HasFormat(CF_TEXT);
  mni_Delete.Enabled := (Memo1.Text <> '');
  // mni_SelectAll.Enabled:= ( Memo1.SelLength <> Length(Memo1.Text) );
end;
 
procedure TForm1.mni_AboutClick(Sender: TObject);
begin
  ShellAbout(Form1.Handle, PWideChar('记事本'),
    'Roman E-Main:450640526@qq.com 2013年6月15日17:46:18',
    Application.Icon.Handle);
end;
 
procedure TForm1.mni_CopyClick(Sender: TObject);
begin
  Memo1.CopyToClipboard
end;
 
procedure TForm1.mni_CutClick(Sender: TObject);
begin
  Memo1.CutToClipboard;
end;
 
procedure TForm1.mni_DeleteClick(Sender: TObject);
begin
  // 没选中也能删除的
  // 快捷键del去掉就可以正常使用了
  Memo1.ClearSelection;
end;
 
procedure TForm1.mni_SelectAllClick(Sender: TObject);
begin
  Memo1.SelectAll;
end;
 
procedure TForm1.mni_DateTimeClick(Sender: TObject);
begin
  Memo1.SetSelText((FormatDateTime('hh:mm yyyy/m/dd', now))); // 插入时间/日期
end;
 
procedure TForm1.mni_ExitClick(Sender: TObject);
begin
  Close;
end;
 
// 调用查找对话框
procedure TForm1.mni_FindClick(Sender: TObject);
begin
  with FindDialog1 do
  begin
    Left := Self.Left + 100;
    Top := Self.Top + 150;
    FindText := Memo1.SelText;
    Execute;
  end;
end;
 
{ ReplaceDialog1.Execute }
procedure TForm1.mni_ReplaceClick(Sender: TObject);
begin
  with ReplaceDialog1 do
  begin
    Left := Self.Left + 100;
    Top := Self.Top + 150;
    FindText := Memo1.SelText;
    Execute;
  end;
end;
 
{ Find Next }
procedure TForm1.mni_FindNextClick(Sender: TObject);
begin
  if not SearchMemo(Memo1, FindStr, FindDialog1.Options) then
    MessageBox(Handle, PWideChar(Concat('找不到"', FindStr, '"')), '记事本',
      MB_ICONINFORMATION);
end;
 
procedure TForm1.mni_FontClick(Sender: TObject);
begin
  with TFontDialog.Create(nil) do
  begin
    Font := Memo1.Font;
    Options := [fdApplyButton];
    if Execute() then
      Memo1.Font := Font;
  end;
end;
 
procedure TForm1.mni_GoToClick(Sender: TObject);
begin
  GoToMemoLineDialog(Memo1);
end;
 
procedure TForm1.mni_PageSetupClick(Sender: TObject);
begin
  With TPageSetupDialog.Create(nil) do
    Execute;
end;
 
procedure TForm1.mni_PasteClick(Sender: TObject);
begin
  Memo1.PasteFromClipboard;
end;
 
procedure TForm1.mni_PrintClick(Sender: TObject);
begin
  MemoPrinter(Memo1); // 标题修改为文件名
end;
 
procedure TForm1.mni_StatusBarClick(Sender: TObject);
begin
  if mni_StatusBar.Checked then
  begin
    bStatueBar := True;
    StatusBar1.Visible := True;
  end
 
  else
  begin
    StatusBar1.Visible := False;
    bStatueBar := False;
  end;
end;
 
procedure TForm1.mni_UndoClick(Sender: TObject);
begin
  Memo1.Undo;
end;
 
procedure TForm1.mni_ViewHelpClick(Sender: TObject);
begin
  ShowMessage('在Win7中 打开一个Windows程序按下 F1 就会打开 Windows帮助和支持 并且会转到相应的界面' + #13#10
    + '如果你会写请告诉我');
end;
 
procedure TForm1.mni_WordWrapClick(Sender: TObject);
begin
  if mni_WordWrap.Checked then
  begin
    Memo1.ScrollBars := ssVertical; // 自动换行
    Memo1.WordWrap := True;
 
    // 转到 和  状态栏不可用  和状态栏菜单不可用 check为false
    mni_GoTo.Enabled := False;
 
    // ----------------------------------------
    mni_StatusBar.Enabled := False;
    mni_StatusBar.Checked := False;
    StatusBar1.Visible := False;
  end
  else
  begin
    Memo1.ScrollBars := ssBoth; // 取消自动换行
    Memo1.WordWrap := False;
 
    mni_GoTo.Enabled := True;
 
    // ----------------------------------------
    mni_StatusBar.Enabled := True;
    mni_StatusBar.Checked := bStatueBar;
    StatusBar1.Visible := bStatueBar;
  end;
  // if bStatueBar=True then Caption:='True';
  // if bStatueBar=False then Caption:='False';
 
end;
 
procedure TForm1.mni_SetTopMosetClick(Sender: TObject);
begin
  if mni_SetTopMoset.Checked then
    FormStyle := fsStayOnTop
  else
    FormStyle := fsNormal;
end;
 
procedure TForm1.SetUiCHS();
begin
  // SetUICH
  // ------------------------------------------
  mni_File.Caption := '文件(&F)';
  FileNew.Caption := '新建(&N)';
  FileOpen.Caption := '打开(&O)...';
  FileSave.Caption := '保存(&S)';
  FileSaveAs.Caption := '另存为(&A)...';
  mni_PageSetup.Caption := '页面设置(&U)...';
  mni_Print.Caption := '打印(&P)...';
  mni_Exit.Caption := '退出(&X)';
  // ------------------------------------------
  mni_Edit.Caption := '编辑(&E)';
  mni_Undo.Caption := '撤消(&U)           Ctrl+Z';
  mni_Cut.Caption := '剪切(&T)           Ctrl+X';
  mni_Copy.Caption := '复制(&C)           Ctrl+C';
  mni_Paste.Caption := '粘贴(&P)           Ctrl+V';
  mni_Delete.Caption := '删除(&L))          Del';
  mni_Find.Caption := '查找(F)...        Ctrl+F';
  mni_FindNext.Caption := '查找下一个(&N)     F3';
  mni_Replace.Caption := '替换(&R)...        Ctrl+H';
  mni_GoTo.Caption := '转到(&G)...        Ctrl+G';
  mni_SelectAll.Caption := '全选(&A)           Ctrl+A';
  mni_DateTime.Caption := '时间/日期(&D)      F5';
  // ------------------------------------------
  mni_Format.Caption := '格式(&O)';
  mni_WordWrap.Caption := '自动换行(&W)';
  mni_Font.Caption := '字体(&F)...';
  // ------------------------------------------
  mni_View.Caption := '查看(&V)';
  mni_StatusBar.Caption := '状态栏(&S)';
  mni_SetTopMoset.Caption := '置顶(&T)';
  // ------------------------------------------
  mni_Help.Caption := '帮助(&H)';
  mni_ViewHelp.Caption := '查看帮助(&H)';
  mni_About.Caption := '关于记事本(&A)';
 
  // // ------------------------------------------
  // Form1Title := '无标题 - 记事本';
  // Line := '行'; //
  // col := '列';
  // sGoToTitle := '转到指定行'; // 轮到行的 输入对话框的标题
  // sGoToTips := '行号(&L):'; //
  // MsgBoxTitle := '行数超过了总行数';
  // MsgBoxHint := '记事本 - 跳行';
  // shellAboutText := '关于 - 记事本';
  // FileDialogFilter := '文本文档(*.txt)|*.txt|所有文件(*.*)|*.*';
 
end;
 
procedure TForm1.SetUiEN();
begin
  // SetUIENGLISH
  // ------------------------------------------
  mni_File.Caption := '&File';
  FileNew.Caption := '&New';
  FileOpen.Caption := '&Open...';
  FileSave.Caption := '&Save';
  FileSaveAs.Caption := 'Save &As...';
  mni_PageSetup.Caption := 'Page Set&up...';
  mni_Print.Caption := '&Print...';
  mni_Exit.Caption := 'E&xit';
  // ------------------------------------------
  mni_Edit.Caption := '&Edit';
  mni_Undo.Caption := '&Undo           Ctrl+Z';
  mni_Cut.Caption := 'Cu&t           Ctrl+X';
  mni_Copy.Caption := '&Copy           Ctrl+C';
  mni_Paste.Caption := '&Paste)           Ctrl+V';
  mni_Delete.Caption := '&Delete          Del';
  mni_Find.Caption := '&Find...        Ctrl+F';
  mni_FindNext.Caption := 'Find &Next     F3';
  mni_Replace.Caption := '&Replace...        Ctrl+H';
  mni_GoTo.Caption := '&Go To...        Ctrl+G';
  mni_SelectAll.Caption := 'Select &All           Ctrl+A';
  mni_DateTime.Caption := 'Time/&Date      F5';
  // ------------------------------------------
  mni_Format.Caption := 'F&ormat';
  mni_WordWrap.Caption := '&Word Wrap';
  mni_Font.Caption := '&Font...';
  // ------------------------------------------
  mni_View.Caption := '&View';
  mni_StatusBar.Caption := '&StatueBar';
  mni_SetTopMoset.Caption := '&TopMost';
  // ------------------------------------------
  mni_Help.Caption := '&Help';
  mni_ViewHelp.Caption := 'View H&elp';
  mni_About.Caption := '&About Notepad';
 
  // // ------------------------------------------
  // Form1Title := 'Untitled - Notepad';
  // Line := 'Ln'; //
  // col := 'Col';
  // sGoToTitle := 'Go To Line'; // 轮到行的 输入对话框的标题
  // sGoToTips := '&Line Number:'; //
  // MsgBoxTitle := 'The line number is beyond the total number of lines';
  // MsgBoxHint := 'Notepad - Goto Line';
  // shellAboutText := ' - Notepad';
  // FileDialogFilter := 'Text File(*.txt)|*.txt|All File(*.*)|*.*';
end;
 
// Printers
procedure TForm1.MemoPrinter(Memo: TMemo; TitleStr: string = '无标题');
var
  Left: Integer;
  Top: Integer;
  i, j, X, Y: Integer; // PageHeight,
  PagesStr: String;
  posX, posY, Posx1, posY1: Integer;
  PrintDialog1: TPrintDialog;
begin
  Left := 500;
  Top := 800;
  Y := Top; // 40
  X := Left; // 80
  j := 1;
  PrintDialog1 := TPrintDialog.Create(Application);
  if PrintDialog1.Execute then
  begin
    if Memo1.Text = '' then
      Exit; // 文本为空 本次操作不会被执行
 
    With Printer do
    begin
      BeginDoc; // 另存的打印的文件名 如何实现  默认为 .jnt
      // Form2.Show;
      Canvas.Font := Memo.Font;
      // -------------------------------------------------------------------------
      // 打印文件名的标题
      // TitleStr:='无标题';
      posX := (PageWidth div 2) - Length(TitleStr) * 50; // x+1800;
      posY := (PageHeight * 6) div 100;
 
      // 第N页的标题
      PagesStr := Format('第 %d 页', [Printer.PageNumber]);
      Posx1 := (PageWidth div 2) - Length(PagesStr) * 50;
      posY1 := (PageHeight * 92) div 100;
      // -------------------------------------------------------------------------
      for i := 0 to Memo.Lines.Count - 1 do
      begin
        Canvas.TextOut(X, Y, Memo.Lines[i]); // TextOut(Left,Top,string);
        Y := Y + Memo.Font.Size * 10;
        // Memo.Font.Size*10为行间距 第1行与第2行的间距,2和3,3与4,...
 
        if (Y > PageHeight - Top) then
        begin
          Canvas.TextOut(posX, posY, TitleStr);
          for j := 1 to Printer.PageNumber do
          begin
            PagesStr := Format('第 %d 页', [j]);
            Canvas.TextOut(Posx1, posY1, PagesStr);
            // Form2.Label1.Caption := System.Concat(' 正在打印', #13#10, TitleStr,
            // #13#10, Format('第 %d 页', [j]));
            // if Form2.Tag = 1 then
            // begin
            // Abort;
            // Exit;
            // end;
          end;
          NewPage;
          Y := Top;
        end;
      end;
      Canvas.TextOut(posX, posY, TitleStr);
      Canvas.TextOut(Posx1, posY1, Format('第 %d 页', [j]));
      // Form2.Close;
      EndDoc;
    end;
  end;
end;
 
procedure TForm1.act_ReadConfigExecute(Sender: TObject);
// Read Config
var
  reg: TRegistry;
begin
  reg := TRegistry.Create;
  reg.RootKey := HKEY_LOCAL_MACHINE;
  if reg.OpenKey('SoftWareTestudoNotepad', False) then
  begin
    // Form Size& Position
    Form1.Width := reg.ReadInteger('Width');
    Form1.Height := reg.ReadInteger('Height');
    Form1.Left := reg.ReadInteger('Left');
    Form1.Top := reg.ReadInteger('Top');
 
    // Font
    Memo1.Font.Name := reg.ReadString('FontName');
    Memo1.Font.Size := reg.ReadInteger('FontSize');
 
    // Memo1.Font.Color:=reg.ReadString('FontColor','');
    // Memo1.Font.Style:=reg.ReadString('FontStyle','');
    // Memo1.Font.Charset:=reg.ReadString('FontCharset','');
 
    // Other
    mni_StatusBar.Checked := reg.ReadBool('StatueBarChecked');
    mni_WordWrap.Checked := reg.ReadBool('WordWrapChecked');
    reg.CloseKey;
    reg.Free;
  end;
  // else ShowMessage('Faild');
end;
 
procedure TForm1.act_WriteConfigExecute(Sender: TObject);
// WriteConfig
var
  reg: TRegistry;
begin
  reg := TRegistry.Create;
  reg.RootKey := HKEY_LOCAL_MACHINE;
  reg.CreateKey('SoftWareTestudoNotepad');
  reg.OpenKey('SoftWareTestudoNotepad', False);
  // Form Size& Position
  reg.WriteInteger('Width', Form1.Width);
  reg.WriteInteger('Height', Form1.Height);
  reg.WriteInteger('Left', Form1.Left);
  reg.WriteInteger('Top', Form1.Top);
 
  // Font
  reg.WriteString('FontName', Memo1.Font.Name);
  reg.WriteInteger('FontSize', Memo1.Font.Size);
 
  // reg.WriteString('FontColor','');
  // reg.WriteString('FontStyle','');
  // reg.WriteString('FontCharset','');
 
  // Other
  reg.WriteBool('StatueBarChecked', mni_StatusBar.Checked);
  reg.WriteBool('WordWrapChecked', mni_WordWrap.Checked);
  reg.CloseKey;
  reg.Free;
end;
 
procedure TForm1.act_SetCaretPosExecute(Sender: TObject);
begin
  if GetUserDefaultUILanguage() = $0804 then // SetUiCHS // Caption:='简体中文';
    StatusBar1.Panels[1].Text := Format('  %s %d %s,%s %d %s ',
      [sLine, Memo1.CaretPos.Y + 1, scol, sLine, Memo1.CaretPos.X + 1, scol])
  else
    // SetUiEN;  //Caption:='英文';
    StatusBar1.Panels[1].Text := Format('  %s %d ,%s %d ',
      [sLine, Memo1.CaretPos.Y + 1, scol, Memo1.CaretPos.X + 1]);
end;
 
end.

 

Search单元
 
///////////////////////////////////////////////////////////////////////////////////////////
//Search单元 SearchMemo
///////////////////////////////////////////////////////////////////////////////////////////
 
unit Search;
 
interface
 
uses
  SysUtils, StdCtrls, Dialogs, StrUtils;
 
function SearchMemo(Memo: TCustomEdit; const SearchString: string; Options: TFindOptions): Boolean;
 
implementation
 
function SearchMemo(Memo: TCustomEdit; const SearchString: string; Options: TFindOptions): Boolean;
var
  Buffer, P: PChar;
  Size: Word;
begin
  Result := False;
  if Length(SearchString) = 0 then
    Exit;
 
  Size := Memo.GetTextLen;
  if (Size = 0) then
    Exit;
 
  Buffer := SysUtils.StrAlloc(Size + 1);
  try
    Memo.GetTextBuf(Buffer, Size + 1);
 
    if frDown in Options then
      P := SearchBuf(Buffer, Size, Memo.SelStart, Memo.SelLength,SearchString, [soDown])
 
    else
      P := SearchBuf(Buffer, Size, Memo.SelStart, Memo.SelLength,SearchString, []);
 
    if (frMatchCase in Options) then
      P := SearchBuf(Buffer, Size, Memo.SelStart, Memo.SelLength, SearchString,[soMatchCase]);
 
    if (frWholeWord in Options) then
      P := SearchBuf(Buffer, Size, Memo.SelStart, Memo.SelLength, SearchString,[soWholeWord]);
 
    if P <> nil then
    begin
      Memo.SelStart := P - Buffer;
      Memo.SelLength := Length(SearchString);
      Result := True;
    end;
 
  finally
    SysUtils.StrDispose(Buffer);
  end;
end;
 
end.

 

注：

在VCL中有个ActionList控件 用它可以轻松实现常用的功能并且不用一句代码

D:AdministratorPublicDocumentsRAD Studio11.0SamplesDelphi

 

 

来自为知笔记(Wiz)