uses CommCtrl;
{©Drkb v.3(2007): www.drkb.ru}
function GetModuleFileNameExW(hProcess:THandle; hModule:HMODULE; lpFilename:PWideChar; nSize:DWORD):DWORD; stdcall; external 'PSAPI.DLL';
const
 ICON_SMALL2 = 2;
function WindowGetEXE(wnd:HWND):string;
var
 wt:array[0..MAX_PATH-1] of WChar;
 r:integer;
 prc:THandle;
 prcID:cardinal;
begin
 result:='';
 if GetWindowThreadProcessID(wnd,prcID)<>0 then
 begin
 prc:=OpenProcess(PROCESS_ALL_ACCESS,false,prcID);
 if prc<>0 then
 try
  r:=GetModuleFileNameExW(prc,0,wt,MAX_PATH*2);
  if r<>0 then result:=wt;
 finally
  CloseHandle(prc)
 end
 end
end;
function WindowGetIcon(wnd:HWND; fSmall:boolean):Cardinal;
var
 defIcon:HICON;
 r,iType1,iType2: integer;
begin
  defIcon:=LoadIcon(0,IDI_APPLICATION);
  if fSmall then
  begin iType1:=ICON_SMALL2; iType2:= GCL_HICONSM; end else
  begin iType1:=ICON_BIG; iType2:= GCL_HICON; end;
  r:=SendMessageTimeOut(wnd,WM_GETICON,iType1,0,SMTO_ABORTIFHUNG or SMTO_NOTIMEOUTIFNOTHUNG, 100, result);
  if (r=0) then result:=defIcon else
  begin
  if (result=0) then result:=GetClassLong(wnd,iType2);
  if (result=0) then result:=defIcon
  end;
end;
function EnumWindowsProc(wnd:HWND; lParam: LPARAM):BOOL; stdcall;
var
 wn:array[0..MAX_PATH-1] of char;
begin
 result:=true;
 if IsWindowVisible(wnd) and (GetParent(wnd)=0) and (GetWindow(wnd,GW_OWNER)=0) and
 ((GetWindowLong(wnd,GWL_EXSTYLE) and WS_EX_TOOLWINDOW)=0) then
 begin
 GetWindowText(wnd,wn,MAX_PATH);
 with Form1.ListView1.Items.Add do
 begin
  Caption :=wn; // заголовок
  SubItems.Add(IntToStr(wnd)); // дескриптор
  SubItems.Add(WindowGetEXE(wnd)); // exe
  SubItems.Add(' '); // колонка для большой иконки
  ImageIndex:=ImageList_AddIcon(Form1.ImageList1.Handle,WindowGetIcon(wnd,true)); // маленькая иконка
  SubItemImages[2] := ImageList_AddIcon(Form1.ImageList2.Handle,WindowGetIcon(wnd,false)); // большая иконка
 end;
 end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
 ListView1.Clear;
 ImageList1.Clear;
 ImageList2.Clear;
 EnumWindows(@EnumWindowsProc,0);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
// ImageList1 - 16x16; ImageList2 - 32x32;
 ListView1.SmallImages:=ImageList1;
 ListView1.LargeImages:=ImageList2;
end;