MapViewOfFile 内存泄露

使用了MapViewOfFile将文件映射到内存

使用完 必须 使用UnmapViewOfFile 取消映射，否则报内存泄露。

CConfigDlg::CConfigDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CConfigDlg::IDD, pParent), m_pUserInfo(0)
{
    m_dllPath = GetModulePath();
    m_hFile = CreateFile(m_dllPath+"\\echoconfig.dat",GENERIC_READ|GENERIC_WRITE,FILE_SHARE_WRITE|FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_HIDDEN,0);
    if (m_hFile == INVALID_HANDLE_VALUE) 
    { 
        m_hFile = CreateFile(m_dllPath+"\\echoconfig.dat",GENERIC_READ|GENERIC_WRITE,FILE_SHARE_WRITE|FILE_SHARE_READ,0,CREATE_NEW,FILE_ATTRIBUTE_HIDDEN,0);
        m_hFileMapping = CreateFileMapping(m_hFile,0,PAGE_READWRITE,0,4096,"mmiku_ae_echo_configuration");
        ASSERT(m_hFileMapping != 0);
        m_pUserInfo = (tagUserInfo*) MapViewOfFile(m_hFileMapping,FILE_MAP_ALL_ACCESS,0,0,0);
        ASSERT(m_pUserInfo != 0);
        m_pUserInfo->i_nTime = 5;
        m_pUserInfo->i_nFeedback = 65;
    }
    else
    {
        m_hFileMapping = CreateFileMapping(m_hFile,0,PAGE_READWRITE,0,4096,"mmiku_ae_echo_configuration");
        ASSERT(m_hFileMapping != 0);
        m_pUserInfo = (tagUserInfo*) MapViewOfFile(m_hFileMapping,FILE_MAP_ALL_ACCESS,0,0,0);
        ASSERT(m_pUserInfo != 0);
    }
    m_nTime = m_pUserInfo->i_nTime * 4410;
    m_fFeedback = m_pUserInfo->i_nFeedback / 100.0f;
}

CConfigDlg::~CConfigDlg()
{
    if(m_hFile != INVALID_HANDLE_VALUE)
        CloseHandle(m_hFile);
    if(m_hFileMapping != NULL)
    {
        UnmapViewOfFile( m_pUserInfo); //这一句 不写 的话 报 内存xielou
        CloseHandle(m_hFileMapping);
    }
}