C#獲取控制台句柄的方法

1.創建類User32API.cs，代碼如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Collections;

namespace XXX
{
    class User32API
    {
        private static Hashtable processWnd = null;

        public delegate bool WNDENUMPROC(IntPtr hwnd, uint lParam);

        static User32API()
        {
            if (processWnd == null)
            {
                processWnd = new Hashtable();
            }
        }

        [DllImport("user32.dll", EntryPoint = "EnumWindows", SetLastError = true)]
        public static extern bool EnumWindows(WNDENUMPROC lpEnumFunc, uint lParam);

        [DllImport("user32.dll", EntryPoint = "GetParent", SetLastError = true)]
        public static extern IntPtr GetParent(IntPtr hWnd);

        [DllImport("user32.dll", EntryPoint = "GetWindowThreadProcessId")]
        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, ref uint lpdwProcessId);

        [DllImport("user32.dll", EntryPoint = "IsWindow")]
        public static extern bool IsWindow(IntPtr hWnd);

        [DllImport("kernel32.dll", EntryPoint = "SetLastError")]
        public static extern void SetLastError(uint dwErrCode);

        public static IntPtr GetCurrentWindowHandle()
        {
            IntPtr ptrWnd = IntPtr.Zero;
            uint uiPid = (uint)System.Diagnostics.Process.GetCurrentProcess().Id;  // 當前進程 ID
            object objWnd = processWnd[uiPid];

            if (objWnd != null)
            {
                ptrWnd = (IntPtr)objWnd;
                if (ptrWnd != IntPtr.Zero && IsWindow(ptrWnd))  // 從緩存中獲取句柄
                {
                    return ptrWnd;
                }
                else
                {
                    ptrWnd = IntPtr.Zero;
                }
            }

            bool bResult = EnumWindows(new WNDENUMPROC(EnumWindowsProc), uiPid);
            // 枚舉窗口返回 false 並且沒有錯誤號時表明獲取成功
            if (!bResult && Marshal.GetLastWin32Error() == 0)
            {
                objWnd = processWnd[uiPid];
                if (objWnd != null)
                {
                    ptrWnd = (IntPtr)objWnd;
                }
            }

            return ptrWnd;
        }

        private static bool EnumWindowsProc(IntPtr hwnd, uint lParam)
        {
            uint uiPid = 0;

            if (GetParent(hwnd) == IntPtr.Zero)
            {
                GetWindowThreadProcessId(hwnd, ref uiPid);
                if (uiPid == lParam)    // 找到進程對應的主窗口句柄
                {
                    processWnd[uiPid] = hwnd;   // 把句柄緩存起來
                    SetLastError(0);    // 設置無錯誤
                    return false;   // 返回 false 以終止枚舉窗口
                }
            }

            return true;
        }

    }
}

2.調用類User32API獲取控制台句柄的代碼：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace XXXX
{
    class XXX
    {
        static void Main(string[] args)
        {
            IntPtr hwnd=User32API.GetCurrentWindowHandle();//獲取句柄

            Console.WriteLine("{0} ", hwnd);
            Console.ReadLine(); 
        }

    }
}