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copied!<p>The Windows API supports objects called "Job Objects". The following code will create a "job" that is configured to shut down all processes when the main application ends (when its handles are cleaned up). This code should only be run once.:</p> <pre class="lang-cpp prettyprint-override"><code>HANDLE ghJob = CreateJobObject( NULL, NULL); // GLOBAL if( ghJob == NULL) { ::MessageBox( 0, "Could not create job object", "TEST", MB_OK); } else { JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli = { 0 }; // Configure all child processes associated with the job to terminate when the jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE; if( 0 == SetInformationJobObject( ghJob, JobObjectExtendedLimitInformation, &jeli, sizeof(jeli))) { ::MessageBox( 0, "Could not SetInformationJobObject", "TEST", MB_OK); } } </code></pre> <p>Then when each child process is created, execute the following code to launch each child each process and add it to the job object:</p> <pre class="lang-cpp prettyprint-override"><code>STARTUPINFO info={sizeof(info)}; PROCESS_INFORMATION processInfo; // Launch child process - example is notepad.exe if (::CreateProcess( NULL, "notepad.exe", NULL, NULL, TRUE, 0, NULL, NULL, &info, &processInfo)) { ::MessageBox( 0, "CreateProcess succeeded.", "TEST", MB_OK); if(ghJob) { if(0 == AssignProcessToJobObject( ghJob, processInfo.hProcess)) { ::MessageBox( 0, "Could not AssignProcessToObject", "TEST", MB_OK); } } // Can we free handles now? Not sure about this. //CloseHandle(processInfo.hProcess); CloseHandle(processInfo.hThread); } </code></pre> <p>VISTA NOTE: See <a href="http://social.msdn.microsoft.com/Forums/en-US/windowssecurity/thread/71c9599e-a3d5-4b79-bfc1-1800565c5b8a" rel="noreferrer">AssignProcessToJobObject always return "access denied" on Vista</a> if you encounter access-denied issues with AssignProcessToObject() on vista.</p>

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