unit Unit1;
interface
uses
Windows, Messages, SysUtils, 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 = $401;
NOERROR = 0;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
procedure WMShellReg(var Message:TMessage);message WM_SHNOTIFY;
public
{ Public declarations }
end;
type PSHNOTIFYSTRUCT=^SHNOTIFYSTRUCT;
SHNOTIFYSTRUCT = record
dwItem1 : PItemIDList;
dwItem2 : PItemIDList;
end;
Type PSHFileInfoByte=^SHFileInfoByte;
_SHFileInfoByte = record
hIcon :Integer;
iIcon :Integer;
dwAttributes : Integer;
szDisplayName : array [0..259] of char;
szTypeName : array [0..79] of char;
end;
SHFileInfoByte=_SHFileInfoByte;
Type PIDLSTRUCT = ^IDLSTRUCT;
_IDLSTRUCT = record
pidl : PItemIDList;
bWatchSubFolders : Integer;
end;
IDLSTRUCT =_IDLSTRUCT;
function SHNotify_Register(hWnd : Integer) : Bool;
function SHNotify_UnRegister:Bool;
function SHEventName(strPath1,strPath2:string;lParam:Integer):string;
Function SHChangeNotifyDeregister(hNotify:integer):integer;stdcall;
external 'Shell32.dll' index 4;
Function SHChangeNotifyRegister(hWnd,uFlags,dwEventID,uMSG,cItems:LongWord;
lPPS:PIDLSTRUCT):integer;stdcall;external 'Shell32.dll' index 2;
Function SHGetFileInfoPidl(pidl : PItemIDList;
dwFileAttributes : Integer;
psfib : PSHFILEINFOBYTE;
cbFileInfo : Integer;
uFlags : Integer):Integer;stdcall;
external 'Shell32.dll' name 'SHGetFileInfoA';
var
Form1: TForm1;
m_hSHNotify:Integer;
m_pidlDesktop : PItemIDList;
implementation
{$R *.DFM}
function SHEventName(strPath1,strPath2:string;lParam:Integer):string;
var
sEvent:String;
begin
case lParam of file://根據參數設置提示消息
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+'中插入可移動存儲介質';
SHCNE_MEDIAREMOVED: sEvent := strPath1+'中移去可移動存儲介質'+strPath1+' '+strpath2;
SHCNE_DRIVEREMOVED: sEvent := '移去驅動器'+strPath1;
SHCNE_DRIVEADD: sEvent := '添加驅動器'+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 := '斷開與服務器的連接'+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 := '磁盤空間大小改變';
SHCNE_ASSOCCHANGED: sEvent := '改變文件關聯';
else
sEvent:='未知操作'+IntToStr(lParam);
end;
Result:=sEvent;
end;
function SHNotify_Register(hWnd : Integer) : Bool;
var
ps:PIDLSTRUCT;
begin
{$R-}
Result:=False;
If m_hSHNotify = 0 then begin
file://獲取桌面文件夾的Pidl
if SHGetSpecialFolderLocation(0, CSIDL_DESKTOP,
m_pidlDesktop)<> NOERROR then
Form1.close;
if Boolean(m_pidlDesktop) then begin
ps.bWatchSubFolders := 1;
ps.pidl := m_pidlDesktop;
// 利用SHChangeNotifyRegister函數注冊系統消息處理
m_hSHNotify := SHChangeNotifyRegister(hWnd, (SHCNF_TYPE Or SHCNF_IDLIST),
(SHCNE_ALLEVENTS Or SHCNE_INTERRUPT),
WM_SHNOTIFY, 1, ps);
Result := Boolean(m_hSHNotify);
end
Else
// 如果出現錯誤就使用 CoTaskMemFree函數來釋放句柄
CoTaskMemFree(m_pidlDesktop);
End;
{$R+}
end;
function SHNotify_UnRegister:Bool;
begin
Result:=False;
If Boolean(m_hSHNotify) Then
file://取消系統消息監視,同時釋放桌面的Pidl
If Boolean(SHChangeNotifyDeregister(m_hSHNotify)) Then begin
{$R-}
m_hSHNotify := 0;
CoTaskMemFree(m_pidlDesktop);
Result := True;
{$R-}
End;
end;
procedure TForm1.WMShellReg(var Message:TMessage); file://系統消息處理函數
var
strPath1,strPath2:String;
charPath:array[0..259]of char;
pidlItem:PSHNOTIFYSTRUCT;
begin
pidlItem:=PSHNOTIFYSTRUCT(Message.wParam);
file://獲得系統消息相關得路徑
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://在程序退出的同時刪除監視
if Boolean(m_pidlDesktop) then
SHNotify_Unregister;
end;
procedure TForm1.Button1Click(Sender: TObject); file://Button1的Click消息
begin
m_hSHNotify:=0;
if SHNotify_Register(Form1.Handle) then begin file://注冊Shell監視
ShowMessage('Shell監視程序成功注冊');
Button1.Enabled := False;
end
else
ShowMessage('Shell監視程序注冊失敗');
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Button1.Caption := '打開監視';
end;
end.
運行程序,點擊“打開監視”按鈕,如果出現一個顯示“Shell監視程序成功注冊”的對話框,說明Form1已經加入到系統操作監視鏈中了,
你可以試著在資源管理器中建立、刪除文件夾,移動文件等操作,你可以發現這些操作都被紀錄下來並顯示在文本框中。
在上面的程序中多次使用到了一個PItemIDList的結構,這個數據結構指定Windows下得一個“項目”,在Windows下資源實現統一管理
一個“項目”可以是一個文件或者一個文件夾,也可以是一個打印機等資源。另外一些API函數也涉及到了Shell(Windows外殼)操作,各位
讀者可以參考相應的參考資料。