通过粘贴板获取DOS窗口内容及发送终止消息

获取DOS窗口内容方法

1. 将输出转存到文件

• 先将结果保存到文件dir c:\>d:\out.txt
• 然后程序读取指定文件内容

2. 通用句柄重定向

• 通过句柄重定向稍复杂一些，需要创建进程前先准备好输入、输出句柄

• 创建进程执行DOS程序

• 周期读取输入句柄的数量
  示例代码：

  CString ExecuteExternalFile(CString csExeName, CString csArguments){CString csExecute;csExecute=csExeName + " " + csArguments;SECURITY_ATTRIBUTES secattr; ZeroMemory(&secattr,sizeof(secattr));secattr.nLength = sizeof(secattr);secattr.bInheritHandle = TRUE;HANDLE rPipe, wPipe;//Create pipes to write and read dataCreatePipe(&rPipe,&wPipe,&secattr,0);//STARTUPINFO sInfo; ZeroMemory(&sInfo,sizeof(sInfo));PROCESS_INFORMATION pInfo; ZeroMemory(&pInfo,sizeof(pInfo));sInfo.cb=sizeof(sInfo);sInfo.dwFlags=STARTF_USESTDHANDLES;sInfo.hStdInput=NULL; sInfo.hStdOutput=wPipe; sInfo.hStdError=wPipe;char command[1024]; strcpy(command,          csExecute.GetBuffer(csExecute.GetLength()));//Create the process here.CreateProcess(0 command,0,0,TRUE,        NORMAL_PRIORITY_CLASS|CREATE_NO_WINDOW,0,0,&sInfo,&pInfo);CloseHandle(wPipe);//now read the output pipe here.char buf[100];DWORD reDword; CString m_csOutput,csTemp;BOOL res;do{                res=::ReadFile(rPipe,buf,100,&reDword,0);                csTemp=buf;                m_csOutput+=csTemp.Left(reDword);}while(res);return m_csOutput;}

  参考网页:

  ​ Execute a Console Application From VC++

  ​ An MFC Process Class

3. 通过粘贴板

• 创建DOS进程获取进程ID
• 通过EnumWindows函数获取进程ID对应的HWND
• 通过系统菜单发送Ctrl+A 与 Ctrl+C拷贝数据到粘贴板

示例代码：

HWND    g_hWnd = NULL;BOOL CALLBACK _EnumWindowsProc(HWND hwnd, LPARAM lParam){    DWORD dwProcessId(0);    GetWindowThreadProcessId(hwnd, &dwProcessId);    if ((DWORD)lParam == dwProcessId)    {        g_hWnd = hwnd;        return FALSE;    }    return TRUE;}CString GetConsoleText(HWND hWndConsole){    if (!IsWindow(hWndConsole))    {        return _T("");    }    CString strRet;    HMENU   hSysMenu = GetSystemMenu(hWndConsole, FALSE);    if (NULL != hSysMenu)    {        TCHAR   szMenuText[128];        int     nItemCnt = GetMenuItemCount(hSysMenu);        for (int i = 0; i < nItemCnt; ++i)        {            if (GetMenuString(hSysMenu, i, szMenuText, _countof(szMenuText), MF_BYPOSITION))            {                if (_tcsstr(szMenuText, _T("编辑")) != NULL)                {                    HMENU hEditMenu = GetSubMenu(hSysMenu, i);                    //全选                    ::SendMessage(hWndConsole, WM_COMMAND, GetMenuItemID(hEditMenu, 3), 0);                    //复制                    ::SendMessage(hWndConsole, WM_COMMAND, GetMenuItemID(hEditMenu, 1), 0);                    if (!OpenClipboard(hWndConsole))                    {                        break;                    }                    HANDLE hClipboardData = GetClipboardData(CF_UNICODETEXT);                    if (hClipboardData)                    {                        wchar_t *pchData = (wchar_t*)GlobalLock(hClipboardData);                        if (pchData)                        {                            strRet = pchData;                            GlobalUnlock(hClipboardData);                        }                    }                    CloseClipboard();                    break;                }            }        }    }    return strRet;}void CDlgTestDlg::OnBnClickedBtnExec(){    //启动示例程序作为子进程    STARTUPINFO si = {sizeof si};    si.cb = sizeof(STARTUPINFO);    si.wShowWindow = SW_SHOW;      si.dwFlags     = STARTF_USESHOWWINDOW;      PROCESS_INFORMATION pi;     CreateProcess(NULL, "cmd /k @echo off>nul & ftp -i -d -s:c:\\cmd.txt", NULL, NULL, TRUE,  CREATE_NEW_PROCESS_GROUP , NULL, NULL, &si, &pi);    Sleep(5*1000);    EnumWindows(_EnumWindowsProc, (LPARAM)pi.dwProcessId);        //发送Ctrl_BREAK消息    if (AttachConsole(pi.dwProcessId))    {        GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, pi.dwProcessId);        FreeConsole();    }    Sleep(500);//等等FTP终止输出完毕    SetDlgItemText(IDC_EDIT, GetConsoleText(g_hWnd));    TerminateProcess(pi.hProcess, 0);    CloseHandle(pi.hProcess);    CloseHandle(pi.hThread);    }

c:\cmd.txt文件内容

open 127.0.0.1downloaddownloadget V8Test.zipbye

参考网址:
Get Text from a CMD window