mouse in that window.
xprop
WM_STATE(WM_STATE):
window state: Normal
icon window: 0x0
_NET_WM_STATE(ATOM) =
_NET_WM_ALLOWED_ACTIONS(ATOM) = _NET_WM_ACTION_MOVE, _NET_WM_ACTION_RESIZE, _NET_WM_ACTION_MINIMIZE, _NET_WM_ACTION_MAXIMIZE_HORZ, _NET_WM_ACTION_MAXIMIZE_VERT, _NET_WM_ACTION_FULLSCREEN, _NET_WM_ACTION_CLOSE
_OL_WIN_ATTR(_OL_WIN_ATTR) = 0x18b, 0x18c, 0x18f
WM_COMMAND(STRING) = { "CIDD", "-Wp", "0", "0", "-Ws", "554", "489", "-WP", "0", "0", "+Wi", "-Wt", "fixed" }
WM_NAME(STRING) = "SPOL FIRESTONE"
WM_NORMAL_HINTS(WM_SIZE_HINTS):
program specified location: 0, 0
program specified size: 554 by 489
WM_HINTS(WM_HINTS):
Client accepts input or input focus: False
window id # to use for icon: 0xc001c7
window id # of group leader: 0xc0000e
WM_CLASS(STRING) = "CIDD", "CIDD"
WM_PROTOCOLS(ATOM): protocols WM_TAKE_FOCUS, WM_DELETE_WINDOW, WM_SAVE_YOURSELF