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1、XML示范文件

以下是一个XML示范文件的示例，展示了如何结构化和存储数据：

2、数据结构

以下是与数据结构相关的定义：

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

以下是读取数据文件的函数实现：

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);      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

以下是写入数据文件的函数实现：

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;      }      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

以下是一个更高层级的扩展示例：

void CustomWellData::DoPropExchange(CXTPPropExchange* pPX){      PX_String(pPX, _T("name"), strStandardNm);      PX_String(pPX, _T("material"), strMaterial);      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      {          CXTPPropExchangeSection secList(pPX->GetSection(_T("DrainageList")));          CXTPPropExchangeEnumeratorPtr enumData(pPX->GetEnumerator(_T("Drainage")));          POSITION pos = enumData->GetPosition();          for (int j = 0; j < arrDrainageData.GetSize(); j++)          {              CXTPPropExchangeSection sec(enumData->GetNext(pos));              arrDrainageData[j]->DoPropExchange(&sec);              ((CXTPPropExchangeXMLNode*)&secList)->PutSection((CXTPPropExchangeXMLNode*)&sec);          }      }  }

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