在WPF或控制台C＃应用程序中接收WM_COPYDATA结构体 [英] Receive WM_COPYDATA struct in WPF or Console C# app

问题描述

我写了一个C＃应用程序，需要与另一个应用程序编写的本机C通信。到目前为止，我已经弄清楚如何使用User32.dll SendMessage从C＃应用程序发送消息到C应用程序。但我无法弄清楚如何获取C＃应用程序从C应用程序的RECEIVE消息。

我看到了WinForms覆盖WndProc方法的例子，但有没有WndProc方法在WPF或控制台应用程序中重写。当然可以在一个控制台应用程序至少。

您可以在WPF中使用 HwndSource.AddHook ：

  private HwndSource hwndSource; 
 void MyWindowClass_Loaded（object sender，RoutedEventArgs e）
 {
 hwndSource = HwndSource.FromHwnd（new WindowInteropHelper（this）.Handle）; 
 hwndSource.AddHook（new HwndSourceHook（WndProc））; 
} 
私人静态IntPtr WndProc（IntPtr hwnd，int msg，IntPtr wParam，IntPtr lParam，ref bool处理）
 {
 //处理你的windows proc消息$ b $不幸的是，对于控制台应用程序没有真正的等价体系。b / b 
  

根据定义，Windows消息由窗口句柄（HWND）发送和接收，因此它们实际上用于GUI应用程序。

有很多其他的，少奇，在Windows上执行进程间通信的方法。我个人喜欢使用管道 - 设置命名管道在本机和托管代码中工作得很好，并且对于两个程序之间的通信非常有效。

I am writing a C# application that needs to communicate with another application written in native C. So far I have figured out how to send messages from my C# app to the C app with the User32.dll SendMessage. However I am unable to figure out how to get the C# app to RECEIVE messages from the C app.

I have seen WinForms examples of overriding the WndProc method, but there is no WndProc method to override in a WPF or Console application. Surely it's possible to do in a Console application at least. Right?

解决方案

You can do this in WPF using HwndSource.AddHook:

private HwndSource hwndSource;
void MyWindowClass_Loaded(object sender, RoutedEventArgs e) 
{
    hwndSource = HwndSource.FromHwnd(new WindowInteropHelper(this).Handle);
    hwndSource.AddHook(new HwndSourceHook(WndProc));
}
private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
    // Process your windows proc message here          
}

Unfortunately, there is no real equivelent for a Console Application. Windows messages, by definition, are sent and received by a window handle (HWND), so they really are meant to be used with GUI applications.

There are many other, less odd, means of doing inter-process communication on Windows, however. I personally like using pipes - setting up named pipes works very well in both native and managed code, and is very efficient for communicating between the two programs.

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