using System;using System.Collections.Generic;using System.Linq;using System.Runtime.InteropServices;using System.Text;using System.Threading.Tasks;namespace ClipboardTest{    public static class ClipboardHelper    {        #region Win32 Interface        [DllImport("user32.dll")]        public static extern bool EmptyClipboard();        [DllImport("user32.dll", SetLastError = true)]        private extern static IntPtr SetClipboardData(uint format, IntPtr handle);        [DllImport("user32.dll")]        static extern IntPtr GetClipboardData(uint uFormat);        [DllImport("user32.dll")]        static extern bool IsClipboardFormatAvailable(uint format);        [DllImport("user32.dll", SetLastError = true)]        static extern bool OpenClipboard(IntPtr hWndNewOwner);        [DllImport("user32.dll", SetLastError = true)]        static extern bool CloseClipboard();        [DllImport("kernel32.dll")]        static extern IntPtr GlobalLock(IntPtr hMem);        [DllImport("kernel32.dll")]        static extern bool GlobalUnlock(IntPtr hMem);        public const uint CF_UNICODETEXT = 13;        #endregion        public static bool CopyToClipboard(uint id, string content)        {            if (OpenClipboard(IntPtr.Zero))            {                EmptyClipboard();                IntPtr hmem = Marshal.StringToHGlobalUni(content);                var ptr = GlobalLock(hmem);                GlobalUnlock(ptr);                SetClipboardData(90, ptr);                CloseClipboard();                return true;            }            return false;        }        public static string GetFromClipboard(uint id)        {            if (!IsClipboardFormatAvailable(id)) return null;            if (!OpenClipboard(IntPtr.Zero)) return null;            string data = http://www.mamicode.com/null;            var hGlobal = GetClipboardData(id);            if (hGlobal != IntPtr.Zero)            {                var lpwcstr = GlobalLock(hGlobal);                if (lpwcstr != IntPtr.Zero)                {                    data = Marshal.PtrToStringAuto(lpwcstr);                    GlobalUnlock(lpwcstr);                }            }            CloseClipboard();                        return data;        }    }}

using System;namespace ClipboardTest{    class Program    {        //[STAThread]        static void Main(string[] args)        {            //ClipboardHelper.CopyToClipboard(90, "qweqweqwe");            var str = ClipboardHelper.GetFromClipboard(90);            Console.WriteLine(str);            Console.ReadLine();        }    }}

#include<Windows.h>#include <iostream>#include <windows.h>#include <ctime>#include <atlstr.h>#include "stdafx.h"BOOL CopyStringToClipBoard(HWND hOwner, CString strSource){    if (::OpenClipboard(hOwner))    {        int buff_size = strSource.GetLength();        CStringW strWide = CStringW(strSource);        int nLen = strWide.GetLength();        HANDLE clipbuffer;        char* buffer;        ::EmptyClipboard();        clipbuffer = ::GlobalAlloc(GMEM_DDESHARE, (nLen + 1) * 2);        buffer = (char*)::GlobalLock(clipbuffer);        memset(buffer, 0, (nLen + 1) * 2);        memcpy_s(buffer, nLen * 2, strWide.GetBuffer(0), nLen * 2);        strWide.ReleaseBuffer();        ::GlobalUnlock(clipbuffer);        ::SetClipboardData(90, clipbuffer);        ::CloseClipboard();    }    return FALSE;}BOOL GetTextFromClipboard(){    if (::OpenClipboard(NULL))    {        HGLOBAL hMem = GetClipboardData(90);        if (NULL != hMem)        {            char* lpStr = (char*)::GlobalLock(hMem);            if (NULL != lpStr)            {                printf(lpStr);                ::GlobalUnlock(hMem);            }        }        ::CloseClipboard();        return TRUE;    }    return FALSE;}int _tmain(int argc, _TCHAR* argv[]){    CopyStringToClipBoard(NULL, "asdsad");    GetTextFromClipboard();    return 0;}