Shell_NotifyIcon - how to implement timeout

[Erhy]

Hello!
Normally if I click on an icon in the notification are.
The window for the notification closes,
if I click after somewhere else.
So this window doesn't bother further.

With my code I find no way to close it, without clicking to it.
What is the secret of the standard notifications?

Erhy

My code to display information for the notification

case WM_RBUTTONDOWN:
{
  HMENU hMenu = LoadMenu(g_hInstance, MAKEINTRESOURCE(IDR_POPUP));
  if (hMenu)
  {
    HMENU hSubMenu = GetSubMenu(hMenu, 0);
    if (hSubMenu)
    {
      POINT stPoint;
      GetCursorPos(&stPoint);
      // TrackPopupMenu does not return so long as no click in menu
      TrackPopupMenu(hSubMenu, TPM_LEFTALIGN | TPM_BOTTOMALIGN | PM_RIGHTBUTTON,  stPoint.x, stPoint.y, 0, hWnd, NULL);
     }
     DestroyMenu(hMenu);
   }
}
break;