#singleinstance,force

run,%a_windir%\notepad.exe
winwait,ahk_class Notepad

hwnd:=WinExist("ahk_class Notepad")
hwndP:=WinExist("ahk_class Shell_TrayWnd")

;SetParent(hwnd,hwndP,"MSTaskListWClass1",600) ; для 7-ки
SetParent(hwnd,hwndP,"ToolbarWindow322",600) ; для XP



SetParent(hwnd,hNewParent,ClassNN="",x=0,y=0)
{
  if ClassNN
    ControlGet,hNewParent,Hwnd,,%ClassNN%,ahk_id %hNewParent%
  oldParent:=DllCall("SetParent","ptr",hwnd,"ptr",hNewParent)
  WinMove,ahk_id %hwnd%,,%x%,%y%
  return oldParent
}

#singleinstance,force

run,%a_windir%\notepad.exe
sleep,500
hwnd:=WinExist("ahk_class Notepad")

;hwndP:=WinExist("ahk_class Shell_TrayWnd")
;Set_Parent_by_hwnd(hwndP,hwnd)

Set_Parent_by_class("Shell_TrayWnd",hwnd)

WinMove,ahk_id %hwnd%,,800,0
Return

Set_Parent_by_hwnd(hParent,hwnd) ;http://autohotkey.com/board/topic/8142-setparent-function-make-a-gui-belong-to-another-window/
{
  Return DllCall( "SetParent", "ptr", hwnd, "ptr", hParent )
}

Set_Parent_by_class(class,hwnd)
{
  hParent:=DllCall("FindWindowEx","ptr",0,"ptr",0,"str",class,"uint",0,"ptr")
  Return DllCall("SetParent","ptr",hwnd,"ptr",hParent)
}

GWLP_HWNDPARENT := -8

Run, notepad,,, PID
WinWait, ahk_pid %PID%
hwnd_child := WinExist()
; WinSet, AlwaysOnTop

hwnd_owner := WinExist("ahk_class Shell_TrayWnd")

DllCall("SetWindowLongPtr", Ptr, hwnd_child, Int, GWLP_HWNDPARENT, Ptr, hwnd_owner)