Question

当Windows Forms C#应用程序和MFC C++应用程序正在运行时，最好的传递信息的方式是什么？我不需要发送很多东西，仅仅是一个小字符串。

Thanks, Jeff

Answer 1

依次列出IPC选项：

Memory mapped files. Easy in C++, tough in C# without pointers, awkward handshaking
WM_COPYDATA. Easy in both, tricky to find the window handle you ll need
Clipboard. Easy in both, very awkward handshaking
COM. Out-of-proc is a beast, forget about it
Mailslots. Not suitable for one-to-one communication
Pipes. Easy in .NET 3.5, do-able in C++ but a bit tricky to get right
Sockets. Easy in both, hard to pass up.

Answer 2

使用命名管道，请参阅此帖子。

Answer 3

如果C++应用程序有一个主窗口，请考虑在C#应用程序中使用SendMessage函数（通过P / Invoke）向C++应用程序发送WM_COPYDATA消息。

将此翻译为汉语：http://msdn.microsoft.com/en-us/library/ms649011%28VS.85%29.aspx

Answer 4

MailSlot api is small and simple but requires P/Invoke to use from c# and can go outside your local machine so needs care. see my answer here

命名管道可能更加健壮，但这是另一种选择。