监视资源管理器的文件变化

unit Unit2;

inte易做图ce

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, shlobj, activex, StdCtrls, FileCtrl,strUtils;

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;
DirectoryListBox1: TDirectoryListBox;
DriveComboBox1: TDriveComboBox;
Label1: TLabel;
Button2: TButton;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure Button2Click(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;