#Include GetChildHWND.ahk
!z::
;retrieve the selection state of an item.
;Number of item.
InputBox, N, Enter number of item(zero-based index), It show the true about selection
ActiveWindow:= WinExist("A")
WinGetClass, class, A
ControlGetFocus, FocusedControl, ahk_id %ActiveWindow%
if not FocusedControl
	return
c_id:=GetChildHWND(ActiveWindow,FocusedControl)
SendMessage, 0x187, N, 0, %FocusedControl%, A
;MsgBox (Class=%class% Handle=%ActiveWindow%)(FC=%FocusedControl% Handle=%c_id%)
MsgBox (Selected: NO=0 YES=1 -->=%ErrorLevel%)