CAD註記層轉到SDE Annotation Features（ArcEngine，C++實現）

CAD註記層轉到SDE Annotation Features本文會提到兩種方式，不過都是要添加一個element，所以，首先給出一個建立element的函數

ITextElementPtr MakeTextElement(CString strText, double x, double y)
{
    HRESULT hr;
    ITextElementPtr ipTextElement(CLSID_TextElement);
    hr = ipTextElement->put_ScaleText(VARIANT_TRUE);
    hr = ipTextElement->put_Text(CComBSTR(strText));

    IGroupSymbolElementPtr ipGroupSymEle = ipTextElement;
    ipGroupSymEle->put_SymbolID(0);

    IPointPtr ipPoint(CLSID_Point);
    ipPoint->put_X(x);
    ipPoint->put_Y(y);

    IElementPtr ipElement = ipTextElement;
    ipElement->put_Geometry(ipPoint);

return ipTextElement;
}

第一種辦法，通過IFDOGraphicsLayer添加Elements的方式實現，實現辦法如下

BOOL AddTextElementEx(CString strText, double x, double y)
{
    HRESULT hr;
    IFeatureWorkspacePtr ipFeatWorkspace = m_ipWorkspace;
if(ipFeatWorkspace == NULL)
return FALSE;
    IFeatureClassPtr ipFeatureClass;
    hr = ipFeatWorkspace->OpenFeatureClass(CComBSTR(_T("abc")),&ipFeatureClass);
    IWorkspaceEditPtr ipWorkspaceEdit = m_ipWorkspace;
if(ipWorkspaceEdit==NULL)
return FALSE;

    IDatasetPtr ipDataset(ipFeatureClass);
    IFDOGraphicsLayerFactoryPtr ipFDOGLFactory(CLSID_FDOGraphicsLayerFactory);    
    IWorkspacePtr ipWs;
    ipDataset->get_Workspace(&ipWs);
    IFeatureWorkspacePtr ipFeatWs(ipWs);

    IFeatureDatasetPtr ipFeatDataset;
    ipFeatureClass->get_FeatureDataset(&ipFeatDataset);
    ILayerPtr ipLayer;
    BSTR bstr;
    hr = ipDataset->get_Name(&bstr);
    hr = ipFDOGLFactory->OpenGraphicsLayer(ipFeatWs,ipFeatDataset,bstr,&ipLayer);
    if(FAILED(hr))

        return FALSE;IFDOGraphicsLayerPtr ipFDOGLayer(ipLayer);        

    IElementCollectionPtr ipElementColl;
    hr = ipElementColl.CreateInstance(CLSID_ElementCollection);
if(FAILED(hr)||ipElementColl==NULL)
return FALSE;

    ITextElementPtr ipTextElement = MakeTextElement(strText,x,y);
    hr = ipElementColl->Add((IElementPtr)ipTextElement,-1);
    hr = ipFDOGLayer->BeginAddElements();
    hr = ipFDOGLayer->DoAddElements(ipElementColl,0);
    hr = ipFDOGLayer->EndAddElements();
return TRUE;
}

　第二種方式，通過IAnnotationFeature來實現，實現代碼如下

BOOL AddTextElement(CString strText, double x, double y)
{
    HRESULT hr;
    IFeatureWorkspacePtr ipFeatWorkspace = m_ipWorkspace;
if(ipFeatWorkspace == NULL)
return FALSE;
    IFeatureClassPtr ipFeatureClass;
    hr = ipFeatWorkspace->OpenFeatureClass(CComBSTR(_T("abc")),&ipFeatureClass);
    IWorkspaceEditPtr ipWorkspaceEdit = m_ipWorkspace;
if(ipWorkspaceEdit==NULL)
return FALSE;

    hr = ipWorkspaceEdit->StartEditing(TRUE);
    hr = ipWorkspaceEdit->StartEditOperation();
    hr = ipWorkspaceEdit->EnableUndoRedo();

    IElementPtr ipElement = MakeTextElement(strText,x , y);
    IAnnotationFeaturePtr ipAnnotationFeature = ipFeature; 
if(ipAnnotationFeature == NULL)
return FALSE;

    hr=ipAnnotationFeature->put_Annotation(ipElement);

    ipWorkspaceEdit->DisableUndoRedo();
    ipWorkspaceEdit->StopEditOperation();
    ipWorkspaceEdit->StopEditing(TRUE);

return TRUE;
}

　　這兩種方法，經過實際測試都可以成功，在匯入的時候還需要注意一下空間參考系的問題，需要對應上，特別要注意dwg中的資料是否正確，如果註記的座標不在參考系範圍內，會出現匯入失敗的現象，我就是因為這個低級的錯誤，糾結了兩天。

　　

參考資料：http://www.cnblogs.com/iswszheng/archive/2009/03/18/1415496.html

http://blog.sina.com.cn/s/blog_5432e0220100kzui.html