unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Shlobj, Activex,FlatUtils, FlatCtrls, FlatBtns;

const
    SHCNE_RENAMEITEM = $1;
    SHCNE_CREATE = $2;
    SHCNE_DELETE = $4;
    SHCNE_MKDIR = $8;
    SHCNE_RMDIR = $10;
    SHCNE_MEDIAINSERTED = $20;
    SHCNE_MEDIAREMOVED = $40;
    SHCNE_DRIVEREMOVED = $80;
    SHCNE_DRIVEADD = $100;
    SHCNE_NETSHARE = $200;
    SHCNE_NETUNSHARE = $400;
    SHCNE_ATTRIBUTES = $800;
    SHCNE_UPDATEDIR = $1000;
    SHCNE_UPDATEITEM = $2000;
    SHCNE_SERVERDISCONNECT = $4000;
    SHCNE_UPDATEIMAGE = $8000;
    SHCNE_DRIVEADDGUI = $10000;
    SHCNE_RENAMEFOLDER = $20000;
    SHCNE_FREESPACE = $40000;
    SHCNE_ASSOCCHANGED = $8000000;
    SHCNE_DISKEVENTS = $2381F;
    SHCNE_GLOBALEVENTS = $C0581E0;
    SHCNE_ALLEVENTS = $7FFFFFFF;
    SHCNE_INTERRUPT = $80000000;
    SHCNF_IDLIST = 0;
    // LPITEMIDLIST
    SHCNF_PATHA = $1;
    // path name
    SHCNF_PRINTERA = $2;
    // printer friendly name
    SHCNF_DWORD = $3;
    // DWORD
    SHCNF_PATHW = $5;
    // path name
    SHCNF_PRINTERW = $6;
    // printer friendly name
    SHCNF_TYPE = $FF;
    SHCNF_FLUSH = $1000;
    SHCNF_FLUSHNOWAIT = $2000;
    SHCNF_PATH = SHCNF_PATHW;
    SHCNF_PRINTER = SHCNF_PRINTERW;
    WM_SHNOTIFY = $401;
    NOERROR = 0;
type
  TForm1 = class(TForm)
    Memo1: TFlatMemo;
    FlatSBRegister: TFlatSpeedButton;
    FlatSBUnRegister: TFlatSpeedButton;
    FlatSBSave: TFlatSpeedButton;
    FlatSBQuit: TFlatSpeedButton;
    Label1: TLabel;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FlatSBRegisterClick(Sender: TObject);
    procedure FlatSBUnRegisterClick(Sender: TObject);
    procedure FlatSBQuitClick(Sender: TObject);
    procedure FlatSBSaveClick(Sender: TObject);
  private
    procedure WMShellReg(var Msg : TMessage); Message WM_SHNOTIFY;
    { Private declarations }
  public
    { Public declarations }
  end;
  
  type PSHNOTIFYSTRUCT=^SHNOTIFYSTRUCT;
    SHNOTIFYSTRUCT = record
    dwItem1 : PItemIDList;
    dwItem2 : PItemIDList;
  end;

  Type PSHFileInfoByte=^SHFileInfoByte;
    _SHFileInfoByte = record
    hIcon :Integer;
    iIcon :Integer;
    dwAttributes : Integer;
    szDisplayName : array [0..259] of char;
    szTypeName : array [0..79] of char;
  end;

  SHFileInfoByte=_SHFileInfoByte;

  Type PIDLSTRUCT = ^IDLSTRUCT;
     _IDLSTRUCT = record
     pidl : PItemIDList;
     bWatchSubFolders : Integer;
  end;
  IDLSTRUCT =_IDLSTRUCT;

  function SHNotify_Register(hWnd : Integer) : Bool;
  function SHNotify_UnRegister:Bool;
  function SHEventName(strPath1,strPath2:string;lParam:Integer):string;
  Function SHChangeNotifyDeregister(hNotify:integer):integer;stdcall;  external 'Shell32.dll' index 4;
  Function SHChangeNotifyRegister(hWnd,uFlags,dwEventID,uMSG,cItems:LongWord;
  lpps:PIDLSTRUCT):integer;stdcall;external 'Shell32.dll' index 2;
  Function SHGetFileInfoPidl(pidl : PItemIDList;
  dwFileAttributes : Integer;
  psfib : PSHFILEINFOBYTE;
  cbFileInfo : Integer;
  uFlags : Integer):Integer;stdcall;
  external 'Shell32.dll' name 'SHGetFileInfoA';
var
  Form1: TForm1;
  m_hSHNotify : Integer;
  m_pidlDesktop : PItemIDList;
implementation

{$R *.dfm}
function SHEventName(strPath1,strPath2:string;lParam:Integer):string;
var
  sEvent:String;
begin
    case lParam of //根據(jù)參數(shù)設(shè)置提示消息
    SHCNE_RENAMEITEM: sEvent := '重命名文件'+strPath1+'為'+strpath2;
    SHCNE_CREATE: sEvent := '建立文件 文件名：'+strPath1;
    SHCNE_DELETE: sEvent := '刪除文件 文件名：'+strPath1;
    SHCNE_MKDIR: sEvent := '新建目錄 目錄名：'+strPath1;
    SHCNE_RMDIR: sEvent := '刪除目錄 目錄名：'+strPath1;
    SHCNE_MEDIAINSERTED: sEvent := strPath1+'中插入可移動(dòng)存儲(chǔ)介質(zhì)';
    SHCNE_MEDIAREMOVED: sEvent := strPath1+'中移去可移動(dòng)存儲(chǔ)介質(zhì)'+strPath1+' '+strpath2;
    SHCNE_DRIVEREMOVED: sEvent := '移去驅(qū)動(dòng)器'+strPath1;
    SHCNE_DRIVEADD: sEvent := '添加驅(qū)動(dòng)器'+strPath1;
    SHCNE_NETSHARE: sEvent := '改變目錄'+strPath1+'的共享屬性';
    SHCNE_ATTRIBUTES: sEvent := '改變文件目錄屬性 文件名'+strPath1;
    SHCNE_UPDATEDIR: sEvent := '更新目錄'+strPath1;
    SHCNE_UPDATEITEM: sEvent := '更新文件 文件名：'+strPath1;
    SHCNE_SERVERDISCONNECT: sEvent := '斷開(kāi)與服務(wù)器的連接'+strPath1+' '+strpath2;
    SHCNE_UPDATEIMAGE: sEvent := 'SHCNE_UPDATEIMAGE';
    SHCNE_DRIVEADDGUI: sEvent := 'SHCNE_DRIVEADDGUI';
    SHCNE_RENAMEFOLDER: sEvent := '重命名文件夾'+strPath1+'為'+strpath2;
    SHCNE_FREESPACE: sEvent := '磁盤(pán)空間大小改變';
    SHCNE_ASSOCCHANGED: sEvent := '改變文件關(guān)聯(lián)';
    else
    sEvent:='未知操作'+IntToStr(lParam);
    end;
    Result:=sEvent;
end;


function SHNotify_Register(hWnd : Integer) : Bool;
var
// ps:PIDLSTRUCT;
 ps : _IDLSTRUCT;
begin
{$R-}
  Result:=False;
  If m_hSHNotify = 0 then begin
  //獲取桌面文件夾的Pidl
  if SHGetSpecialFolderLocation(0, CSIDL_DESKTOP,m_pidlDesktop) <> NOERROR then
  Form1.close;
  if Boolean(m_pidlDesktop) then begin
  ps.bWatchSubFolders := 1;
  ps.pidl := m_pidlDesktop;
  // 利用SHChangeNotifyRegister函數(shù)注冊(cè)系統(tǒng)消息處理
  m_hSHNotify := SHChangeNotifyRegister(hWnd, (SHCNF_TYPE Or SHCNF_IDLIST),
  (SHCNE_ALLEVENTS Or SHCNE_INTERRUPT),
  WM_SHNOTIFY, 1, @ps);
  Result := Boolean(m_hSHNotify);
  end
  Else
  // 如果出現(xiàn)錯(cuò)誤就使用 CoTaskMemFree函數(shù)來(lái)釋放句柄
  CoTaskMemFree(m_pidlDesktop);
End;
{$R+}
end;

function SHNotify_UnRegister:Bool;
begin
  Result:=False;
  If Boolean(m_hSHNotify) Then
  //取消系統(tǒng)消息監(jiān)視，同時(shí)釋放桌面的Pidl
  If Boolean(SHChangeNotifyDeregister(m_hSHNotify)) Then
  begin
   {$R-}
    m_hSHNotify := 0;
    CoTaskMemFree(m_pidlDesktop);
    Result := True;
   {$R-}
  End;
end;

procedure TForm1.WMShellReg(var Msg:TMessage); //系統(tǒng)消息處理函數(shù)
var
  strPath1,strPath2 : String;
  charPath :array[0..259]of char;
  pidlItem : PSHNOTIFYSTRUCT;
begin
   pidlItem:=PSHNOTIFYSTRUCT(Msg.wParam);
    //獲得系統(tǒng)消息相關(guān)得路徑
   SHGetPathFromIDList(pidlItem.dwItem1,charPath);
   strPath1:=charPath;
   SHGetPathFromIDList(pidlItem.dwItem2,charPath);
   strPath2:=charPath;
   Memo1.Lines.Add(SHEvEntName(strPath1,strPath2,Msg.lParam));
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  if Boolean(m_pidlDesktop) then
    SHNotify_Unregister;
end;

procedure TForm1.FlatSBRegisterClick(Sender: TObject);
begin
  m_hSHNotify:=0;
  if SHNotify_Register(Form1.Handle) then begin //注冊(cè)Shell監(jiān)視
  Application.MessageBox('Shell監(jiān)視程序成功注冊(cè)！', '信息', 0);
  FlatSBRegister.Enabled := False;
  end
  else
  Application.MessageBox('Shell監(jiān)視程序注冊(cè)失敗！', '信息', 0);
end;

procedure TForm1.FlatSBUnRegisterClick(Sender: TObject);
begin
 if Boolean(m_pidlDesktop) then
  SHNotify_Unregister;
 FlatSBRegister.Enabled := True; 
end;

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

procedure TForm1.FlatSBSaveClick(Sender: TObject);
begin
  Memo1.Lines.SaveToFile('c:\tmp.txt'); 
end;

end.