Retrieves the handle of the specified child window's parent window
#include <WinAPISysWin.au3>
_WinAPI_GetParent ( $hWnd )
| $hWnd | Window handle of child window |
| Success: | The handle of the parent window |
| Failure: | 0, call _WinAPI_GetLastError() to get extended error information |
Search GetParent in MSDN Library.