【转】如何监控某个驱动器或目录及其下面的所有子目录的创建文件的动作

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,
shlobj, Activex;

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)
Button1: TButton;
Memo1: TMemo;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
procedure WMShellReg(var Message:TMessage);message WM_SHNOTIFY;
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 //file://根据参数设置提示消息
SHCNE_RENAMEITEM: sEvent := '重命名文件'+strPath1+'为'+strpath2;
SHCNE_CREATE: sEvent := '建立文件 文件名：'+strPath1;
SHCNE_DELETE: sEvent := '删除文件 文件名：'+strPath1;
SHCNE_MKDIR: sEvent := '新建目录 目录名：'+strPath1;
SHCNE_RMDIR: sEvent := '删除目录 目录名：'+strPath1;
SHCNE_MEDIAINSERTED: sEvent := strPath1+'中插入可移动存储介质';
SHCNE_MEDIAREMOVED: sEvent := strPath1+'中移去可移动存储介质'+strPath1+' '+strpath2;
SHCNE_DRIVEREMOVED: sEvent := '移去驱动器'+strPath1;
SHCNE_DRIVEADD: sEvent := '添加驱动器'+strPath1;
SHCNE_NETSHARE: sEvent := '改变目录'+strPath1+'的共享属性';
SHCNE_ATTRIBUTES: sEvent := '改变文件目录属性 文件名'+strPath1;
SHCNE_UPDATEDIR: sEvent := '更新目录'+strPath1;
SHCNE_UPDATEITEM: sEvent := '更新文件 文件名：'+strPath1;
SHCNE_SERVERDISCONNECT: sEvent := '断开与服务器的连接'+strPath1+' '+strpath2;
SHCNE_UPDATEIMAGE: sEvent := 'SHCNE_UPDATEIMAGE';
SHCNE_DRIVEADDGUI: sEvent := 'SHCNE_DRIVEADDGUI';
SHCNE_RENAMEFOLDER: sEvent := '重命名文件夹'+strPath1+'为'+strpath2;
SHCNE_FREESPACE: sEvent := '磁盘空间大小改变';
SHCNE_ASSOCCHANGED: sEvent := '改变文件关联';
else
sEvent:='未知操作'+IntToStr(lParam);
end;
Result:=sEvent;
end;
function SHNotify_Register(hWnd : Integer) : Bool;
var
//ps:PIDLSTRUCT;
ps :IDLSTRUCT;
begin
{$R-}
Result:=False;
If m_hSHNotify = 0 then
begin
//file://获取桌面文件夹的Pidl
if SHGetSpecialFolderLocation(0, CSIDL_DESKTOP,
m_pidlDesktop)<> NOERROR then
Form1.close;
if Boolean(m_pidlDesktop) then
begin
ps.bWatchSubFolders := 1;
ps.pidl := m_pidlDesktop;
// 利用SHChangeNotifyRegister函数注册系统消息处理
m_hSHNotify := SHChangeNotifyRegister(
hWnd,
(SHCNF_TYPE Or SHCNF_IDLIST),
(SHCNE_ALLEVENTS Or SHCNE_INTERRUPT),
//WM_SHNOTIFY, 1, ps);
WM_SHNOTIFY, 1, @ps);
Result := Boolean(m_hSHNotify);
end
Else
// 如果出现错误就使用 CoTaskMemFree函数来释放句柄
CoTaskMemFree(m_pidlDesktop);
End;
{$R+}
end;
function SHNotify_UnRegister:Bool;
begin
Result:=False;
If Boolean(m_hSHNotify) Then
//file://取消系统消息监视，同时释放桌面的Pidl
If Boolean(SHChangeNotifyDeregister(m_hSHNotify)) Then
begin
{$R-}
m_hSHNotify := 0;
CoTaskMemFree(m_pidlDesktop);
Result := True;
{$R-}
End;
end;

procedure TForm1.WMShellReg(var Message:TMessage); //file://系统消息处理函数
var
strPath1,strPath2:String;
charPath:array[0..259]of char;
pidlItem:PSHNOTIFYSTRUCT;
begin
pidlItem:=PSHNOTIFYSTRUCT(Message.wParam);
//file://获得系统消息相关得路径
SHGetPathFromIDList(pidlItem.dwItem1,charPath);
strPath1:=charPath;
SHGetPathFromIDList(pidlItem.dwItem2,charPath);
strPath2:=charPath;
Memo1.Lines.Add(SHEvEntName(strPath1,strPath2,Message.lParam)+chr(13)+chr(10));
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
//file://在程序退出的同时删除监视
if Boolean(m_pidlDesktop) then
SHNotify_Unregister;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
m_hSHNotify:=0;
if SHNotify_Register(Form1.Handle) then begin// file://注册Shell监视
ShowMessage('Shell监视程序成功注册');
Button1.Enabled := False;
end
else
ShowMessage('Shell监视程序注册失败');
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
Button1.Caption := '打开监视';
end;

end.