DOF为什么要删除行？

更新经过一些试验，似乎将设置保存到DOF实际上比将其保存到DSK文件更可靠。

将另一个TEdit添加到窗体并创建LoadDOFSettings和SaveDOFSettings 类似于现有的LoadSettings和SaveSettings，并在收到时调用它们 DesktopLoad和DesktoSave通知。无需通过Timer1事件调用SaveDOFSettings，因为DOF似乎没有发生重命名。

原始答案 我建议在阅读此答案之前，先做一个文件|在IDE中关闭全部，创建一个新程序包，将下面的单元添加到其中，然后将其安装在IDE中。

该软件包的目的是双重的，首先是说明如何在DSK文件中保存自定义设置，其次是让您了解有关项目的哪些事件信息您可以通过ToolsAPI单元中的服务从IDE中获取文件。

安装软件包后，请密切注意其表单，该表单会在您打开，处理和关闭项目时在上方的备忘录中显示文件通知。有需要注意的几件事：

打开项目时，收到的最后一条通知是有关其DSK文件已打开的消息。
并非每种文件类型都是通知的主题。特别是，您不会收到任何专门针对DOF文件的通知，因此，如果您要写入该文件并稍后再读取该文件，则必须做出有关何时安全（或不安全）的假设，这就是可能是为什么您遇到了您要问的问题。
在项目上执行“全部关闭”时，收到通知的最后文件更改是正在写入的DSK。要注意的是，它最初是写入到具有相同名称但扩展名为。$$$的文件中。此后不久，但您无法确切地说，这个。$$$文件被重命名为.DSK。

由下面的代码创建的表单具有一个编辑框，DSK文件的edMyValue' which can be used to set a value in a section of the DSK file called MySettings and which is reloaded the next time the project is opened. The writing of the MySettings`部分由TTimer触发，延迟2秒以使IDE时间按照我的描述编写并重命名DSK文件。显然，这为比赛条件提供了机会。

您可能想参考

http://www.gexperts.org/open-tools-api-faq/#dsk

（GExperts是IDE加载项工具，自Delphi成立以来就一直存在）

本文的部分讨论当前项目的.DSK文件。像DOF一样，它是INI文件格式，具有类似

的部分

[Closed Files]
[Modules]
[EditWindow0]
[View0]

您会看到它说

检查ofnProjectDesktopLoad和ofnProjectDesktopSave NotifyCode值。当您看到其中之一时，可以使用TIniFile等类从FileName参数指示的文件中保存/加载值。

由于重命名业务，也许比文章建议的要难一些。

玩得开心！

unit IDEEventsu;
interface
uses
  Windows,Messages,SysUtils,Variants,Classes,Graphics,Controls,Forms,Dialogs,StdCtrls,ExtCtrls,ToolsAPI,Grids,IniFiles;

type
  TFileEventsForm = class(TForm)
    Panel1: TPanel;
    Memo1: TMemo;
    edMyValue: TEdit;
    btnClear: TButton;
    Timer1: TTimer;
    Memo2: TMemo;
    procedure btnClearClick(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    function GetCurrentProject: IOTAProject;
  public
    //  The following are using interfaces accessible via the ToolsAPI
    Services: IOTAServices;
    ProjectGroup : IOTAProjectGroup;
    Project: IOTAProject;
    Options : IOTAProjectOptions;
    ModServices: IOTAModuleServices;
    Module: IOTAModule;

    NotifierIndex: Integer;  // This is used to disconnect our notifier from the IDE
    IsSetUp : Boolean;
    SetUpCount : Integer;
    DskFileName : String;
    procedure SetUp;
    procedure SaveSettings;
    procedure LoadSettings;
  end;

var
  FileEventsForm: TFileEventsForm;

procedure Register;

[...]
uses
 typinfo;

type
  TIdeNotifier = class(TNotifierObject,IOTANotifier,IOTAIDENotifier)
  //  This is the class we use to receive file notication events from the IDE via the
  //  interfaces in ToolsAPI.Pas
  //
  //  It needs to implement the IOTANotifier and IOTAIDENotifier interfaces and,//  once registered with the IDE,the IDE calls its methods as a kind of call-back
  //  mechanism so that it gets notified of file events
  //
  //  Note that this file also provides a form for displaying the received event
  //  notifications and that the IOTANotifier and IOTAIDENotifier interfaces could
  //  just as easily be implemented by the form itself
  protected
    procedure AfterCompile(Succeeded: Boolean);
    procedure BeforeCompile(const Project: IOTAProject; var Cancel: Boolean);
    procedure FileNotification(NotifyCode: TOTAFileNotification;
      const FileName: string; var Cancel: Boolean);
  end;

procedure Register;
//  This is necessary to register the package in the IDE
var
  Notifier : TIdeNotifier;
begin
  FileEventsForm:= TFileEventsForm.Create(Nil);
  FileEventsForm.Services := BorlandIDEServices as IOTAServices;
  Notifier := TIdeNotifier.Create;
  Notifier.Form := FileEventsForm;
  FileEventsForm.NotifierIndex := FileEventsForm.Services.AddNotifier(TIdeNotifier.Create);
end;

procedure CloseDown;
begin
  FileEventsForm.Services.RemoveNotifier(FileEventsForm.NotifierIndex);
  FileEventsForm.Close;
  FileEventsForm.Free;
end;

function NotifyCodeString(NotifyCode : TOTAFileNotification) : String;
begin
  Result := Copy(GetEnumName(TypeInfo(TOTAFileNotification),Ord(NotifyCode)),4,MaxInt);
end;

procedure TIdeNotifier.AfterCompile(Succeeded: Boolean);
begin
end;

procedure TIdeNotifier.BeforeCompile(const Project: IOTAProject; var Cancel: Boolean);
begin
end;

procedure TIdeNotifier.FileNotification(NotifyCode: TOTAFileNotification;
  const FileName: string; var Cancel: Boolean);
begin
  if True {NotifyCode in [ofnProjectDesktopLoad,ofnActiveProjectChanged]}  then begin
    FileEventsForm.Show;
    FileEventsForm.Memo1.Lines.Add(Format('%s file: %s',[NotifyCodeString(NotifyCode),FileName]));
    case NotifyCode of
      ofnProjectDesktopLoad,ofnDefaultDesktopLoad : begin
        FileEventsForm.DskFileName := FileName;
        FileEventsForm.LoadSettings;
      end;
      ofnProjectDesktopSave,ofnDefaultDesktopSave : begin
        if True{CompareText(ExtractFileExt(FileName),'.DSK') = 0} then begin
          FileEventsForm.Caption := FileName;
          FileEventsForm.Timer1.Enabled := True;  //  causes DSK file to be updated after Timer1.Interval (=2000ms)
        end;
      end;
    end; { case }
  end;
end;

procedure TFileEventsForm.btnClearClick(Sender: TObject);
begin
  Memo1.Lines.Clear;
end;

function TFileEventsForm.GetCurrentProject: IOTAProject;
var
  i: Integer;
begin
  Result := nil;
  ModServices := BorlandIDEServices as IOTAModuleServices;
  for i := 0 to ModServices.ModuleCount - 1 do
  begin
    Module := ModServices.Modules[i];
    if Supports(Module,IOTAProjectGroup,ProjectGroup) then begin
      Result := ProjectGroup.ActiveProject;
      Options := Result.ProjectOptions;
      Exit;
    end
    else if Supports(Module,IOTAProject,Project) then
    begin // In the case of unbound packages,return the 1st
      if Result = nil then begin
        Result := Project;
        Options := Result.ProjectOptions;
      end;
    end;
  end;
end;

procedure TFileEventsForm.SetUp;
begin
  Project := GetCurrentProject;
  Inc(SetUpCount);
  Caption := 'Setup done ' + IntToStr(SetUpCount);
  IsSetUp := True;
end;

procedure TFileEventsForm.LoadSettings;
var
  Ini : TMemIniFile;
  S : String;
begin
  Ini := TMemIniFile.Create(DSKFileName);
  try
    S := Ini.ReadString('MySettings','Name','no value');
    edMyValue.Text := S;
  finally
    Ini.Free;
  end;
end;

procedure TFileEventsForm.SaveSettings;
var
  Ini : TMemIniFile;
  S : String;
begin
  S := DSKFileName;
  Caption := 'Saving: ' + S;
  Ini := TMemIniFile.Create(S);
  try
    Ini.WriteString('MySettings',edMyValue.Text);
    Ini.UpdateFile;
    Ini.ReadSections(Memo2.Lines);
    Memo2.Lines.Add('This file : ' + DSKFileName);
    edMyValue.Text := '?';
  finally
    Ini.Free;
  end;
end;

procedure TFileEventsForm.Timer1Timer(Sender: TObject);
begin
  Timer1.Enabled := False;
  SaveSettings;
end;

initialization

finalization
  CloseDown;
end.

DOF为什么要删除行？

xue5227980 回答：DOF为什么要删除行？

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