#Include GetChildHWND.ahk
!z::
ActiveWindow:= WinExist("A")
WinGetClass, class, A
ControlGetFocus, FocusedControl, ahk_id %ActiveWindow%
if not FocusedControl
	return
c_id:=GetChildHWND(ActiveWindow,FocusedControl)
SendMessage, 0x18b, 0, 0, %FocusedControl%, A
MsgBox (Number of items=%ErrorLevel%)