Get the currently-active window. Requires your window manager to support this. Uses _NET_ACTIVE_WINDOW from the EWMH spec.
@param window_ret Pointer to Window where the active window is stored.
See Implementation
Get the currently-active window. Requires your window manager to support this. Uses _NET_ACTIVE_WINDOW from the EWMH spec.
@param window_ret Pointer to Window where the active window is stored.