本文主要向大家介绍了VC编程之VC、MFC 访问进程内存，代码片段，通过具体的内容向大家展示，希望对大家学习VC编程有所帮助。

#include "StdAfx.h"#include#include "ProcessMemory.h"
//打开进程内存BOOL CProcessMemory::Open(INT nPID)
{
 HANDLE hToken;
 INT    nFlag;
 nFlag = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken);
 if(!nFlag)
 {
  OutputDebugString(_T("OpenProcessToken Fail!\n"));
  return 0;
 }
 SetPrivilege(hToken, SE_DEBUG_NAME, TRUE);
 ::CloseHandle(hToken);
 m_hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, nPID);
 if (m_hProc == INVALID_HANDLE_VALUE)
  return FALSE;
 return TRUE;
}
BOOL CProcessMemory::Open(LPCTSTR pzProcessName)
{
 INT nPID;
 nPID = GetProcessID(pzProcessName);
 return Open(nPID);
}
//设置进程权限int CProcessMemory::SetPrivilege(HANDLE hToken, LPCTSTR lpszStr, BOOL bEnable)
{
 TOKEN_PRIVILEGES tp;
 LUID luid;

 BOOL bRet;
 bRet = LookupPrivilegeValue(NULL, lpszStr, &luid);
 if(bRet == FALSE)
 {
  OutputDebugString(_T("Lookup Privilege Value Fail!\n"));
  return FALSE;
 }

 tp.PrivilegeCount = 1;
 tp.Privileges[0].Luid = luid;

 if(bEnable)
  tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 else
  tp.Privileges[0].Attributes = 0;

 bRet = AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), NULL, NULL);
 return bRet;
}

//写入
DWORD CProcessMemory::Write(LPVOID lpBaseAddress,  LPVOID lpBuffer, DWORD nSize)
{
 BOOL  bRet;
 DWORD dwReaded = 0;

 //句柄无效
 if(m_hProc == NULL)
  return FALSE;

 bRet = ::WriteProcessMemory(m_hProc, lpBaseAddress, lpBuffer, nSize, &dwReaded);
 if (bRet == FALSE)
  dwReaded = 0;
 return dwReaded;
}
//读取
DWORD CProcessMemory::Read(LPCVOID  lpBaseAddress,  LPVOID lpBuffer, DWORD nSize)
{
 BOOL  bRet;
 DWORD dwReaded = 0;

 //句柄无效
 if(m_hProc == NULL)
  return FALSE;

 bRet = ::ReadProcessMemory(m_hProc, lpBaseAddress, lpBuffer, nSize, &dwReaded);
 if (bRet == FALSE)
  dwReaded = 0;
 return dwReaded;
}
//关闭void CProcessMemory::Close()
{
 if (m_hProc)
 {
  ::CloseHandle(m_hProc);
 }
}
//根据进程名，返回第一个进程实例的PID
INT CProcessMemory::GetProcessID(LPCTSTR pzProcessName)
{
 BOOL bRet;
 CString szExeName(pzProcessName);
 HANDLE hProcess;
 PROCESSENTRY32 procEntry;
 procEntry.dwSize = sizeof(PROCESSENTRY32);
 
 //进行进程快照
 hProcess=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
 //开始进程查找
 bRet=Process32First(hProcess,&procEntry);

 //循环比较，得出ProcessID
 while(bRet)
 {
  if(0 == szExeName.Compare(procEntry.szExeFile))
   return procEntry.th32ProcessID;
  bRet=Process32Next(hProcess,&procEntry);
 }
 return 0;
}    

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