using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
using System.IO;


namespace BPASmartClient.Helper
{
    public class SystemUtils
    {
        public static bool isShowNumBoard = false;
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool Wow64DisableWow64FsRedirection(ref IntPtr ptr);
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool Wow64RevertWow64FsRedirection(IntPtr ptr);


        public static void ShowScreenKeyboard()
        {

            //获得当前登录的Windows用户标示
            System.Security.Principal.WindowsIdentity identity = System.Security.Principal.WindowsIdentity.GetCurrent();
            System.Security.Principal.WindowsPrincipal principal = new System.Security.Principal.WindowsPrincipal(identity);
            //判断当前登录用户是否为管理员
            if (principal.IsInRole(System.Security.Principal.WindowsBuiltInRole.Administrator))
            {
                try
                {
                    Process[] pros = Process.GetProcessesByName("TabTip");
                    string path = "C:/Program Files/Common Files/microsoft shared/ink/TabTip.exe";
                    if (File.Exists(path)) Process.Start(path);
                    else
                    {
                        Process[] pro = Process.GetProcessesByName("osk");//判断软键盘是否进程是否已经存在，如果不存在进行调用
                        if (pro != null && pro.Length > 0) return;//说明已经存在，不再进行调用
                        IntPtr ptr = new IntPtr();
                        bool isWow64FsRedirectionDisabled = Wow64DisableWow64FsRedirection(ref ptr);
                        if (isWow64FsRedirectionDisabled)
                        {
                            Process.Start(@"C:\WINDOWS\system32\osk.exe");
                            bool isWow64FsRedirectionReverted = Wow64RevertWow64FsRedirection(ptr);
                        }
                    }
                }
                catch (Exception)
                {

                    throw;
                }


            }
            else
            {
                //创建启动对象
                System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();

                startInfo.FileName = "";//Application.ExecutablePath;//设置运行文件

                startInfo.Arguments = "";// String.Join(" ", args); //设置启动参数

                startInfo.Verb = "runas"; //设置启动动作,确保以管理员身份运行

                System.Diagnostics.Process.Start(startInfo); //如果不是管理员，则启动UAC
                                                             //退出应用程序

            }
        }






    }
}












//[DllImport("kernel32.dll", SetLastError = true)]
//private static extern bool Wow64DisableWow64FsRedirection(ref IntPtr ptr);
//[DllImport("kernel32.dll", SetLastError = true)]
//public static extern bool Wow64RevertWow64FsRedirection(IntPtr ptr);
//private const UInt32 WM_SYSCOMMAND = 0x112;
//private const UInt32 SC_RESTORE = 0xf120;
//[DllImport("user32.dll", CharSet = CharSet.Auto)]
//static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
//private const string OnScreenKeyboadApplication = "osk.exe";


///// <summary>
///// 启用系统软键盘
///// </summary>
//public static void OpenKeyBoardFun()
//{
//    try
//    {
//        //判断软键盘是否进程是否已经存在，如果不存在进行调用
//        Process[] pro = Process.GetProcessesByName("osk");
//        //如果键盘已打开，则进行关闭操作
//        if (pro != null && pro.Length > 0)
//        {
//            CloseKeyBoardFun();
//            return;
//        }

//        // Get the name of the On screen keyboard
//        string processName = System.IO.Path.GetFileNameWithoutExtension(OnScreenKeyboadApplication);

//        // Check whether the application is not running 
//        var query = from process in Process.GetProcesses()
//                    where process.ProcessName == processName
//                    select process;

//        var keyboardProcess = query.FirstOrDefault();

//        // launch it if it doesn't exist
//        if (keyboardProcess == null)
//        {
//            IntPtr ptr = new IntPtr(); ;
//            bool sucessfullyDisabledWow64Redirect = false;

//            // Disable x64 directory virtualization if we're on x64,
//            // otherwise keyboard launch will fail.
//            if (System.Environment.Is64BitOperatingSystem)
//            {
//                sucessfullyDisabledWow64Redirect = Wow64DisableWow64FsRedirection(ref ptr);
//            }

//            // osk.exe is in windows/system folder. So we can directky call it without path
//            using (Process osk = new Process())
//            {
//                osk.StartInfo.FileName = OnScreenKeyboadApplication;
//                osk.Start();
//                //osk.WaitForInputIdle(2000);
//            }

//            // Re-enable directory virtualisation if it was disabled.
//            if (System.Environment.Is64BitOperatingSystem)
//                if (sucessfullyDisabledWow64Redirect)
//                    Wow64RevertWow64FsRedirection(ptr);
//        }
//        else
//        {
//            // Bring keyboard to the front if it's already running
//            var windowHandle = keyboardProcess.MainWindowHandle;
//            SendMessage(windowHandle, WM_SYSCOMMAND, new IntPtr(SC_RESTORE), new IntPtr(0));
//        }

//    }
//    catch (Exception ex)
//    {
//        //LogUtil.WriteLog(MethodBase.GetCurrentMethod().Name, LogUtil.ERROE, ex.Message);
//        //LogUtil.WriteLog(MethodBase.GetCurrentMethod().Name, LogUtil.ERROE, ex.StackTrace);
//    }

//}


///// <summary>
///// 关闭系统软键盘
///// </summary>
//public static void CloseKeyBoardFun()
//{
//    try
//    {
//        Process[] pros = Process.GetProcessesByName("osk");
//        foreach (Process p in pros)
//        {
//            p.Kill();
//        }
//    }
//    catch (Exception ex)
//    {
//        //LogUtil.WriteLog(MethodBase.GetCurrentMethod().Name, LogUtil.ERROE, ex.Message);
//        //LogUtil.WriteLog(MethodBase.GetCurrentMethod().Name, LogUtil.ERROE, ex.StackTrace);
//    }

//}