fn set_strut(window: &gtk::Window, is_top: bool, rect: Rectangle) {
        let ptr: *mut gdk_sys::GdkWindow = window.get_window().unwrap().to_glib_none().0;

        unsafe {
            // atoms
            let strut = CString::new("_NET_WM_STRUT").unwrap();
            let partial = CString::new("_NET_WM_STRUT_PARTIAL").unwrap();
            let cardinal = CString::new("CARDINAL").unwrap();
            let strut = gdk_sys::gdk_atom_intern(strut.as_ptr(), 0);
            let cardinal = gdk_sys::gdk_atom_intern(cardinal.as_ptr(), 0);
            let partial = gdk_sys::gdk_atom_intern(partial.as_ptr(), 0);
            // strut
            let format: c_int = 16; // number of bits (must be 8, 16 or 32)
            let mode: c_int = 0; // PROP_MODE_REPLACE
            // get height bytes
            let (lo, hi) = ((rect.height & 0xFF) as u8, (rect.height >> 8) as u8);
            let data = if is_top {[
                0, 0, // left
                0, 0, // right
                lo, hi, // top
                0, 0, // bottom
            ]} else {[
                0, 0, // left
                0, 0, // right
                0, 0, // top
                lo, hi, // bottom
            ]};
            let data_ptr: *const u8 = data.as_ptr();
            let el: c_int = 4 as i32;
            gdk_sys::gdk_property_change(
                ptr, // window:
                strut, // property:
                cardinal, // type_:
                format, // format:
                mode, // mode:
                data_ptr, // data:
                el, // nelements:
            );
            // partial
            let x1 = rect.x + rect.width - 1;
            let (x0lo, x0hi) = ((rect.x & 0xFF) as u8, (rect.x >> 8) as u8);
            let (x1lo, x1hi) = ((x1 & 0xFF) as u8, (x1 >> 8) as u8);
            let data = if is_top {[
                0, 0, // left
                0, 0, // right
                lo, hi, // top
                0, 0, // bottom
                0, 0, // start
                0, 0, // end
                0, 0, // start
                0, 0, // end
                x0lo, x0hi, // start
                x1lo, x1hi, // end
                0, 0, // start
                0, 0, // end
            ]} else {[
                0, 0, // left
                0, 0, // right
                0, 0, // top
                lo, hi, // bottom
                0, 0, // start
                0, 0, // end
                0, 0, // start
                0, 0, // end
                0, 0, // start
                0, 0, // end
                x0lo, x0hi, // start
                x1lo, x1hi, // end
            ]};
            // left, right, top, bottom
            let data_ptr: *const u8 = data.as_ptr();
            let el: c_int = 12 as i32;
            gdk_sys::gdk_property_change(
                ptr, // window:
                partial, // property:
                cardinal, // type_:
                format, // format:
                mode, // mode:
                data_ptr, // data:
                el, // nelements:
            );
        }
    }