WPF 如何接收C++动态库的消息

我在C++开发的动态库中post了几个消息，需要在WPF开发的程序中接收并解析他们，大神们，有什么办法？最好有具体的例子，我是新手，多多指教，谢谢！

PostMessage(HWND_BROADCAST, WM_CONNSUCC, 0, 0);

PostMessage(HWND_BROADCAST, WM_CONNFAIL, 0, 0);

PostMessage(HWND_BROADCAST, WM_VEHDATA, VD[tmpcCurrVeh].LaneID, tmpcCurrVeh);

https://blog.csdn.net/doitplayer/article/details/72832954

private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == WM_CONNSUCC)
...
if (msg == WM_CONNFAIL)
...
return IntPtr.Zero;
}

至于WM_CONNSUCC等的值，这个好像是自己定义的，你换成你实际的就可以。