about ReadProcessMemory

   DWORD dwProcessId;
    HANDLE hProcess;
    SCOPEINFO psi_buffer;
    BOOL fRet = FALSE;

    GetWindowThreadProcessId(hwnd, &dwProcessId);

    if (dwProcessId != GetCurrentProcessId())
    {
        // If the memory is owned by a process other than the current process we
        // need to remote read memory from that process.

        hProcess = OpenProcess(0, FALSE, dwProcessId);

        if(!hProcess)
        {
            fRet = FALSE;
            goto Leave;
        }
        else
        {       
            if(!ReadProcessMemory(hProcess,
                (VOID *) psi,(VOID *) &psi_buffer, sizeof(SCOPEINFO), NULL))
            {
                fRet = FALSE;
                goto Leave;
            }
        }
    }
    else
    {
        psi_buffer = *psi;
    }

    if (psi_buffer.dwSize != sizeof(SCOPEINFO))
    {
        return FALSE;
    }
    UserTakenHereFlag;
    EnterUserMaybe();

    ScopeControl *psc = (ScopeControl *)GetWindowLong(hwnd, 0);
    if (!psc)
    {
        fRet = FALSE;
        goto Leave;
    }   

    if (dwProcessId != GetCurrentProcessId())
    {
       if(!WriteProcessMemory(hProcess, (VOID *) psi,
              (VOID *) &psc->m_si, sizeof(SCOPEINFO), NULL))
       {
            fRet = FALSE;
            goto Leave;
       }
    }
    else
    {
        memcpy(psi, &psc->m_si, sizeof(SCOPEINFO));
    }
    fRet = TRUE;

Leave:
    LeaveUserMaybe();

    if (hProcess)
    {
        CloseHandle(hProcess);
    }