本文共 3500 字，大约阅读时间需要 11 分钟。

注：XTP库文件可以在网上下载，然后引用到所写的程序中

1、XML示范文件

//示例文件
   
       
            
             
             
             
         
    
   

2、数据结构

// 数据结构struct stuNodeData{    CString strGuid;    CString strClassName;    CString strDisplayName;    CString strBlockName;    stuNodeData()    {        strGuid = _T("");        strClassName = _T("");        strDisplayName = _T("");        strBlockName = _T("");    }    stuNodeData(const stuNodeData& src)    {        strGuid = src.strGuid;        strClassName = src.strClassName;        strDisplayName = src.strDisplayName;        strBlockName = src.strBlockName;    }    void DoPropExchange(CXTPPropExchange* pPX)    {        PX_String(pPX, _T("ID"), strGuid);        PX_String(pPX, _T("Class"), strClassName);        PX_String(pPX, _T("DisplayName"), strDisplayName);        PX_String(pPX, _T("BlockName"), strBlockName);    }};

3、读取函数

void LoadDatFile(CString dataPath, std::vector
   
    & vecNodeData){    CXTPPropExchangeXMLNode px(TRUE, NULL, _T("GalleryLibrary"));    if (!px.LoadFromFile(dataPath))        return;    if (!px.OnBeforeExchange())        return;    px.SetCompactMode(TRUE);    // 读取据记录    CString strPattern = _T("GalleryItems/GalleryItem");    CXTPPropExchangeEnumeratorPtr enumData(px.GetEnumerator(strPattern));    POSITION pos = enumData->GetPosition();    while (pos)    {        CXTPPropExchangeSection sec(enumData->GetNext(pos));        stuNodeData data;        data.DoPropExchange(&sec);        vecNodeData.push_back(data);    }}
   

4、写入函数

bool WriteDatFile(CString& strFilePath, std::vector
   
    & vecNodeData){    CXTPPropExchangeXMLNode px(FALSE, NULL, _T("GalleryLibrary"));    if (!px.OnBeforeExchange())    {        return false;    }    px.SetCompactMode(TRUE);    if (vecNodeData.size() <= 0)    {        return false;    }    // 添加层节点    CXTPPropExchangeSection secStandardList(px.GetSection(_T("StandardList")));    CXTPPropExchangeEnumeratorPtr enumData( secStandardList->GetEnumerator(_T("Standard")));    POSITION pos = enumData->GetPosition();    for (int i = 0; i < vecNodeData.GetCount(); i++)    {        CXTPPropExchangeSection sec(enumData->GetNext(pos));        vecNodeData.at(i)->DoPropExchange(&sec);    }    px.SaveToFile(strFilePath);    return true;}
   

5、更高层级的扩展示范例子

void CustomWellData::DoPropExchange(CXTPPropExchange* pPX){    PX_String(pPX, _T("name"), strStandardNm);    PX_String(pPX, _T("material"), strMaterial);    //pPX->IsLoading()此处可以通过CXTPPropExchangeXMLNode     //px(FALSE, NULL, _T("GalleryLibrary"))的第一个参数来定    if (pPX->IsLoading())    {        CXTPPropExchangeEnumeratorPtr enumData(pPX->GetEnumerator(_T("DrainageList/Drainage")));        POSITION pos = enumData->GetPosition();        while (pos)        {            CXTPPropExchangeSection sec(enumData->GetNext(pos));            CustomDrainageData* pData = new CustomDrainageData();            pData->DoPropExchange(&sec);            arrDrainageData.Add(pData);        }    }    else    {        // 添加 SizeList 节点        CXTPPropExchangeSection secList(pPX->GetSection(_T("DrainageList")));        CXTPPropExchangeEnumeratorPtr enumData(pPX->GetEnumerator(_T("Drainage")));        POSITION pos = enumData->GetPosition();        for (int j = 0; j < arrDrainageData.GetSize(); j++)        {            // 添加 Size 节点            CXTPPropExchangeSection sec(enumData->GetNext(pos));            arrDrainageData[j]->DoPropExchange(&sec);            ((CXTPPropExchangeXMLNode*)&secList)->PutSection((CXTPPropExchangeXMLNode*)&sec);        }    }}

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