#if ASYNC
  // Loop for determining the drop-file client window
  SetCapture(hWnd);
  do {
    MSG Msg;
    while (PeekMessage(&Msg, NULL, NULL, NULL, PM_REMOVE))
      if ( Msg.message != WM_LBUTTONDOWN &&
           Msg.message != WM_RBUTTONDOWN )  DispatchMessage(&Msg);
      else has_been_down = 1;

    // Get cursor position & window under the cursor
    GetCursorPos(&ptMousePos);
    hWndSubject = WindowFromPoint(ptMousePos);

    fOkToDrop = FALSE;

#ifdef CLIPDROP
    {
      HWND hWndCur = hWndSubject;
      if ( IsOther ) switch ( IsClipbordDrop(hWnd,&hWndCur,&ptMousePos) ) {
        case  0: break;
        case -1: continue;
        default: retval = DropClipboard(hWnd,hWndCur,szAllFileNames,wNumFiles);
                 goto go_away;
      }
    }
#endif CLIPDROP

    while ( IsWindow(hWndSubject) ) {
#ifdef DROP_MESSAGE
      ScreenToClient(hWndSubject, &ptMousePos);
      DragSetPoint(hDrop,&ptMousePos);
      if ( SendMessage(hWndSubject,wm_querydropobject,0,MAKELONG(hDrop,0)) ) {
#else
      if ( (GetWindowLong(hWndSubject, GWL_EXSTYLE) & WS_EX_ACCEPTFILES)) {
#endif
         fOkToDrop = TRUE;
         if ( hWndSubject == hWnd ) { IsSelf = 1; if ( IsOther == 0 ) fOkToDrop = FALSE; }
         else { IsSelf = 0; IsOther = 1; }
         goto ShowCursor;
      }
      hWndSubject = GetParent(hWndSubject);
    }

    IsOther = 1;
ShowCursor:
    if ( fOkToDrop )
       SetCursor((wNumFiles > 1) ? hCrsrDrpMultiple : hCrsrDrpSingle);
    else
       SetCursor(hCrsrDrpNotAllow);

    // Terminate loop when mouse button is released
    state = ( GetAsyncKeyState(VK_LBUTTON) & 0x8000 ) |
            ( GetAsyncKeyState(VK_RBUTTON) & 0x8000 );
    if ( state ) has_been_down = 1;
  } while ( state || !has_been_down);
go_away:
  ReleaseCapture();

#endif