友善的最新例子   如何 关闭  看门狗？

在最新的例子中  打开 喂狗 都有，但没说怎么关闭 看门狗啊？

bool Open(void) {
        Dev = CreateFile(L"WDT1:", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
        return Dev != INVALID_HANDLE_VALUE;
    }
    bool Touch(void) {
        bool ret;
        DWORD retlen;
        if (Dev != INVALID_HANDLE_VALUE) {
            ret = !!WriteFile(Dev, "W", 1, &retlen, 0);
        } else {
            ret = false;
        }
        return ret;
    }