Windows C++ 监听注册表是否发生变化

#include <Windows.h>
#include <winreg.h>

int main()
{
    HKEY    hKey;
    DWORD    dwFilter[2] = { REG_NOTIFY_CHANGE_LAST_SET, REG_NOTIFY_CHANGE_NAME };
    HANDLE    hEvent;

    RegOpenKeyEx(HKEY_CURRENT_USER, L"Software\\ld\\dnplayer", 0, KEY_ALL_ACCESS, &hKey);
    hEvent = CreateEvent(NULL, TRUE, TRUE, NULL);
    RegNotifyChangeKeyValue(hKey,
        TRUE,
        dwFilter[0],
        hEvent,
        TRUE);
    DWORD ret = WaitForSingleObject(hEvent,-1);
    printf("ret = %lu\n", ret);
    system("pause");
    return 0;
}