C# - 捕获来自特定应用程序的Windows消息

using System;
using System.Runtime.InteropServices;

public class MessageCapture
{
    // 导入Windows API函数
    [DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

    [DllImport("user32.dll")]
    public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

    // 定义常量
    private const int WM_COPYDATA = 0x004A;

    public static void Main()
    {
        // 查找目标应用程序的窗口句柄
        IntPtr targetWindowHandle = FindWindow(null, "目标应用程序窗口标题");

        if (targetWindowHandle != IntPtr.Zero)
        {
            // 发送自定义消息给目标应用程序
            SendMessage(targetWindowHandle, WM_COPYDATA, 0, 0);
        }
        else
        {
            Console.WriteLine("未找到目标应用程序窗口");
        }
    }
}