Constant xcb::ffi::xproto::XCB_CW_CURSOR

pub const XCB_CW_CURSOR: xcb_cw_t = 0x4000;

If a cursor is specified, it will be used whenever the pointer is in the window. If None is speci- fied, the parent’s cursor will be used when the pointer is in the window, and any change in the parent’s cursor will cause an immediate change in the displayed cursor.