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 并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;
??????? }

??? }
}

?

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2.調用類User32API獲取控制臺句柄的代碼：

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();?
??????? }

??? }
}

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