Utils.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.Security.Cryptography;
using System.Windows;
using System.Windows.Interop;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Bob
{
    class Utils
    {
        public static readonly string BaseUri = ConfigurationManager.AppSettings["ApiUri"];

        public static string getUTF_8(string unicodeString)
        {
            UTF8Encoding utf8 = new UTF8Encoding();
            Byte[] encodedBytes = utf8.GetBytes(unicodeString);
            String decodedString = utf8.GetString(encodedBytes);
            return decodedString;
        }

        //拼接签名，sha256(应用ID+input+salt+curtime+应用密钥)
        public static string ComputeHash(string input, HashAlgorithm algorithm)
        {
            Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
            Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
            return BitConverter.ToString(hashedBytes).Replace("-", "");
        }

        //拼接签名，sha256(应用ID+input+salt+curtime+应用密钥)
        public static string Truncate(string q)
        {
            if (q == null)
            {
                return null;
            }
            int len = q.Length;
            return len <= 20 ? q : (q.Substring(0, 10) + len + q.Substring(len - 10, 10));
        }


        [DllImport("user32.dll")]
        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId);

        [DllImport("user32.dll")]
        private static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach);

        //显示在最上层
        public static void SetWindowToForegroundWithAttachThreadInput(Window window)
        {
            Console.WriteLine("Application_Activated - end:" + DateTime.Now.ToString());
            var interopHelper = new WindowInteropHelper(window);
            var thisWindowThreadId = GetWindowThreadProcessId(interopHelper.Handle, IntPtr.Zero);
            var currentForegroundWindow = GetForegroundWindow();
            var currentForegroundWindowThreadId = GetWindowThreadProcessId(currentForegroundWindow, IntPtr.Zero);

            // [c# - Bring a window to the front in WPF - Stack Overflow](https://stackoverflow.com/questions/257587/bring-a-window-to-the-front-in-wpf )
            // [SetForegroundWindow的正确用法 - 子坞 - 博客园](https://www.cnblogs.com/ziwuge/archive/2012/01/06/2315342.html )
            /*
               　　1.得到窗口句柄FindWindow 
            　　　　2.切换键盘输入焦点AttachThreadInput 
            　　　　3.显示窗口ShowWindow(有些窗口被最小化/隐藏了) 
            　　　　4.更改窗口的Zorder，SetWindowPos使之最上，为了不影响后续窗口的Zorder,改完之后，再还原 
            　　　　5.最后SetForegroundWindow 
             */
            AttachThreadInput(currentForegroundWindowThreadId, thisWindowThreadId, true);

            window.Show();
            window.Activate();
            // 去掉和其他线程的输入链接
            AttachThreadInput(currentForegroundWindowThreadId, thisWindowThreadId, false);

            // 用于踢掉其他的在上层的窗口
            window.Topmost = true;
            window.Topmost = false;
        }



        public const int WM_GETTEXT = 0x000D;
        public const int WM_GETTEXTLENGTH = 0x000E;
        public const int WM_CLOSE = 0x10;
        public const int WM_COPY = 0x301;
        public const int WM_CUT = 0x300;
        public const int WM_PASTE = 0x302;
        // 查找窗口
        [DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        // 遍历窗口的所有子窗口，通过CallBack回调
        [DllImport("user32.dll")]
        public static extern int EnumChildWindows(IntPtr hWndParent, CallBack lpfn, int lParam);
        public delegate bool CallBack(IntPtr hwnd, int lParam);

        // 获取窗口的类名
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

        // 判断窗口是否可见
        [DllImport("user32.dll")]
        public static extern bool IsWindowVisible(IntPtr hWnd);

        // 获取窗口文本长度
        [DllImport("user32.dll")]
        public static extern int GetWindowTextLength(IntPtr hWnd);

        // 获取窗口文本，文本会塞入StringBuilder中，需要指明字符串最大长度nMaxCount
        [DllImport("User32.dll", EntryPoint = "GetWindowText")]
        public static extern int GetWindowText(IntPtr hwnd, StringBuilder lpString, int nMaxCount);

        [DllImport("user32.dll ", EntryPoint = "GetDlgItem")]
        public static extern IntPtr GetDlgItem(IntPtr hParent, int nIDParentItem);

        // 给窗口发送消息
        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        public static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);

        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam);

        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

        // 给窗口发送消息，事件返回的数据通过Byte[]数组获得
        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, Byte[] lParam);


        [DllImport("user32.dll")]
        public static extern int GetFocus();




        [DllImport("User32.dll")]
        public static extern bool SetForegroundWindow(IntPtr hWnd);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetForegroundWindow();
        [DllImport("user32.dll")]
        public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint dwExtraInfo);
        public static void SendCtrlC(IntPtr hWnd){    
            uint KEYEVENTF_KEYUP = 2;
            byte VK_CONTROL = 0x11;
            SetForegroundWindow(hWnd);
            keybd_event(VK_CONTROL, 0, 0, 0);    
            keybd_event(0x43, 0, 0, 0); 
            //Send the C key (43 is "C")
            keybd_event(0x43, 0, KEYEVENTF_KEYUP, 0);
            keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
            // 'Left Control Up
        }
    }
}