重启程序

三种方法记录：

1.OnDestroy消息,（最好的方法）

void CMFCApplication9Dlg::OnDestroy()
{
CDialogEx::OnDestroy();
int _nRestart = GetPrivateProfileInt(_T("App"),_T("Restart"),NULL,_T("c:\\1.ini"));

   if(_nRestart)
   {
       WritePrivateProfileString(_T("App"), _T("Restart"), _T("0"), _T("c:\\1.ini"));

TCHAR _pBuf[MAX_PATH];

GetModuleFileName(NULL, _pBuf, MAX_PATH);

STARTUPINFO _startupInfo;
PROCESS_INFORMATION _procInfo;

memset(&_startupInfo, 0, sizeof(STARTUPINFO));
_startupInfo.cb = sizeof(STARTUPINFO);

// 最重要的地方

       ::CreateProcess(_pBuf, NULL, NULL, NULL, FALSE,
           NORMAL_PRIORITY_CLASS, NULL, NULL, &_startupInfo, &_procInfo);
   }

扫描二维码关注公众号，回复： 12675696 查看本文章

2.cmd脚本形式，动态生成，会造成安全软件拦截

void Restart(IN CString strAppName_)
{
   FILE* pf;
   ::DeleteFile(L"restart.cmd");                           //确保删除上次遗留下的批处理文件
   errno_t err = ::_wfopen_s(&pf, L"restart.cmd", L"w");   //“w”表示打开一个空文件以进行写入。如果该文件存在，其内容将被销毁。
   if (err == 0)                                           //restart.cmd不存在时，err == 0
   {
       TCHAR szExeName[1024];
       GetModuleFileName(NULL, szExeName, 1024);           //获取进程的名称
       _ftprintf(pf, _T("@echo off\n:a\n taskkill /f /im %s \n start \"\" \"%s\" \ndel %%0"), strAppName_.GetBuffer(),szExeName);
       //restart.exe为需要重启的进程名称
//taskkill /f(指定要强行终止的进程) /im( image name 可以理解为指定要终止的进程名名称)
//%%0在批处理中表示%0，del %%0(删除批处理自身)
       fclose(pf);
   }
   else
   {
   //   cout << "can not open restart.cmd" << endl;
   }

   STARTUPINFO si;
   PROCESS_INFORMATION pi;
   ZeroMemory(&si, sizeof si);
   ZeroMemory(&pi, sizeof pi);
   si.cb = sizeof si;
   si.dwFlags = STARTF_USESHOWWINDOW;
   si.wShowWindow = SW_HIDE;
   TCHAR winSysDir[1024];
   ZeroMemory(winSysDir, sizeof winSysDir);
   ::GetSystemDirectory(winSysDir, 1024);
   std::wstring appName = winSysDir;
   appName += L"\\cmd.exe";
   BOOL bRet = CreateProcess(
       appName.c_str(),
       L"/c restart.cmd",                   //执行字符串指定的命令然后终断
       NULL,
       NULL,
       FALSE,
       0,
       NULL,
       NULL,
       &si,
       &pi);

   if (bRet == FALSE)
   {
       int err = GetLastError();
       //cout << "can not restart test, error code:" << err << endl;
   }
}

3.实际只改了进程号，某些变化并没有生效

void Restart(IN HWND hwnd_)
{
   //发送退出程序消息
   ::SendMessage(hwnd_, WM_CLOSE, 0, 0);
   //MFC程序可以用下面这行代码
   //::PostMessage(AfxGetMainWnd()->m_hWnd,WM_SYSCOMMAND,SC_CLOSE,NULL);

   //获取exe程序当前路径
   TCHAR szAppName[MAX_PATH];
   ::GetModuleFileName(NULL, szAppName, MAX_PATH);

   std::wstring strCommandline = L"\"-scmd\" \"appid\" \"100\"";
   wchar_t pszCommandline[1024] = { 0 };
   wcscpy_s(pszCommandline, strCommandline.c_str());

   //创建进程重启程序
   STARTUPINFO StartInfo;
   memset(&StartInfo, 0, sizeof(STARTUPINFO));
   StartInfo.cb = sizeof(STARTUPINFO);
   PROCESS_INFORMATION procStruct;
   memset(&procStruct, 0, sizeof(PROCESS_INFORMATION));
   //
   ::CreateProcessW(
       (LPCTSTR)szAppName,
       (LPWSTR)pszCommandline,//命令行参数放置于此
       NULL,
       NULL,
       FALSE,
       NORMAL_PRIORITY_CLASS,
       NULL,
       NULL,
       &StartInfo,
       &procStruct);
}

猜你喜欢