@brief Send a ChangeProperty request for _NET_SUPPORTING_WM_CHECK
_NET_SUPPORTING_WM_CHECK, WINDOW/32
@param ewmh The per-screen EWMH information
@param parent_window The root window or child window created by the WM
@param child_window The child window created by the WM
@return Cookie associated with the ChangeProperty _NET_SUPPORTING_WM_CHECK request
@brief Send a ChangeProperty request for _NET_SUPPORTING_WM_CHECK
_NET_SUPPORTING_WM_CHECK, WINDOW/32
@param ewmh The per-screen EWMH information @param parent_window The root window or child window created by the WM @param child_window The child window created by the WM @return Cookie associated with the ChangeProperty _NET_SUPPORTING_WM_CHECK request