c ++多线程窗口GUI（访问表单） [英] c++ multithreaded windows GUI (accessing the forms)
问题描述
我写了一个简单的控制台应用程序，使用windows sockets来作为服务器和客户端之间的代理。我决定做一个图形界面，用于实时观看所有的输入/输出数据包（如一个非常简单的wireshark）。
I've written a simple console application using windows sockets to work as a proxy between a server and a client. I decided to make a graphical interface for watching all the in/outgoing packets real time (like a very simple wireshark).
服务器和客户端之间的连接运行与消息循环不同的线程。当服务器/客户端发送数据包时，我想立即显示（例如添加到一个简单的文本控件）。
The connection between the server and the client runs on a different thread than the message loop. When the server/client sends a packet, I would like that to be displayed (for example added to a simple text control) immediately.
但是因为我不能从其他线程访问表单，而不是消息循环的线程，我不知道如何处理这个。
But since I can not access the forms from other thread than the thread where the message loop is I dont know how to handle this.
我发现了几个解决方案：
- 托管c ++
- C ++ / CLI
- C＃，
但不使用.NET平台。 （我真的很新这个GUI主题，所以我甚至不确定你可以使用Windows窗体没有.NET）
I've found several solutions in: - Managed c++ - C++/CLI - C#, but not any without using .NET platform. (I really new to this GUI topic so I am not even sure you can use windows forms without .NET)
也许QT + C + +可以处理这个问题，但任何其他解决方案比？如果不是可以用C＃/ Java编写一个用于本地C ++代码的包装器？
Maybe QT + C++ could handle this problem, but any other solution than that? If not is it possible to write a wrapper in C# / Java for the native C++ code?
必须有许多使用C / C ++编写的应用程序，
There must be many applications written in C/C++ which using a GUI, what is the general way to do that?
推荐答案
你绝对正确，你不能在不同的线程访问一个窗口。使用:: PostMessage Win32 API命令（或者，如果你使用Win32周围的包装器库，无论那个包装器中最终调用PostMessage的函数）处理这个消息的正确方法。以下是Microsoft有关消息队列的有用链接：
http://msdn.microsoft.com/en-us/library/windows/desktop/ms644928（v = vs.85）.aspx
You are absolutely correct that you cannot access a window in a different thread. The proper way to handle this to post a message using the ::PostMessage Win32 API command (or, if you are using a wrapper library around Win32, whatever function in that wrapper that eventually calls PostMessage). Here's a useful link from Microsoft regarding message queues: http://msdn.microsoft.com/en-us/library/windows/desktop/ms644928(v=vs.85).aspx
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