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...
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
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
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
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
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;
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('SoftWare\Testudo\Notepad', 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('SoftWare\Testudo\Notepad');
reg.OpenKey('SoftWare\Testudo\Notepad', 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:[email protected] 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('SoftWare\Testudo\Notepad', 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('SoftWare\Testudo\Notepad'); reg.OpenKey('SoftWare\Testudo\Notepad', 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
