分享一个防杀进程：

程序运行两个事例,每个实例互相监视另外的实例是否存在,

如果不存在,就运行一个.

代码:

 // test_process.cpp : Defines the entry point for the console application.

//

#include "stdafx.h"

#include "tchar.h"

#include "iostream.h"

#include "windows.h"

LPCTSTR lpszMutex1 = _T("mutex1");

LPCTSTR lpszMutex2 = _T("mutex2");

DWORD WINAPI Thread1(LPARAM lParam);

DWORD WINAPI Thread2(LPARAM lParam);

int main(int argc, char* argv[])

{

HANDLE hMutex1 = CreateMutex(NULL, FALSE, lpszMutex1);

if (hMutex1 != NULL)

if (GetLastError() == ERROR_ALREADY_EXISTS)

{

CloseHandle(hMutex1);

cout << lpszMutex1 << " already exist." << endl;

HANDLE hMutex2 = CreateMutex(NULL, FALSE, lpszMutex2);

if (hMutex2 != NULL)

if (GetLastError() == ERROR_ALREADY_EXISTS)

{

cout << lpszMutex2 << " already exist." << endl;

return 1;

}

}

DWORD dwThreadId;

HANDLE hThread = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)Thread1,NULL,0,&dwThreadId);

CloseHandle(hThread);

while (1)

Sleep(1);

return 0;

}

DWORD WINAPI Thread1(LPARAM lParam)

{

HANDLE hMutex;

while (1)

{

hMutex = OpenMutex(MUTEX_ALL_ACCESS, TRUE, lpszMutex1);

if (! hMutex)

{

STARTUPINFO si = { sizeof STARTUPINFO };

PROCESS_INFORMATION pi;

TCHAR szBuf[MAX_PATH];

GetModuleFileName(GetModuleHandle(NULL), szBuf, MAX_PATH);

CreateProcess(szBuf, NULL, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi);

CloseHandle(pi.hThread);

CloseHandle(pi.hProcess);

}

CloseHandle(hMutex);

hMutex = OpenMutex(MUTEX_ALL_ACCESS, TRUE, lpszMutex2);

if (! hMutex)

{

cout << "mutex 2 created." << endl;

STARTUPINFO si = { sizeof STARTUPINFO };

PROCESS_INFORMATION pi;

TCHAR szBuf[MAX_PATH];

GetModuleFileName(GetModuleHandle(NULL), szBuf, MAX_PATH);

CreateProcess(szBuf, NULL, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi);

CloseHandle(pi.hThread);

CloseHandle(pi.hProcess);

}

CloseHandle(hMutex);

cout << "Thread      ..." << endl;

Sleep(1);

}

return 1;

}