AE:显示注记

    //附&＃xff1a;1.注记可显示&＃xff0c;但和图形对齐的方式没找到&＃xff1b;2.没加注释---有愿意的不愿意。

    HRESULT hr &＃61; E_FAIL;
    IGeoFeatureLayerPtr pGeoFeaLyr;
    IMapControl2Ptr pMapControl; 
    pMapControl&＃61;m_MapCtrl.get_Object();

    pGeoFeaLyr&＃61;pMapControl->GetLayer(2);//层索引
    if(pGeoFeaLyr  &＃61;&＃61; NULL) return;
    //
    ILineLabelPlacementPrioritiesPtr pLineLabPlaPrior(__uuidof(LineLabelPlacementPriorities));
    hr &＃61; pLineLabPlaPrior->put_AboveAfter(3);
    hr &＃61; pLineLabPlaPrior->put_AboveAlong(1);
    hr &＃61; pLineLabPlaPrior->put_AboveBefore(3);
    hr &＃61; pLineLabPlaPrior->put_AboveEnd(3);
    hr &＃61; pLineLabPlaPrior->put_AboveStart(3);
    hr &＃61; pLineLabPlaPrior->put_BelowAfter(3);
    hr &＃61; pLineLabPlaPrior->put_BelowAlong(3);
    hr &＃61; pLineLabPlaPrior->put_BelowBefore(3);
    hr &＃61; pLineLabPlaPrior->put_BelowEnd(3);
    hr &＃61; pLineLabPlaPrior->put_BelowStart(3);
    hr &＃61; pLineLabPlaPrior->put_CenterAfter(3);
    hr &＃61; pLineLabPlaPrior->put_CenterAlong(3);
    hr &＃61; pLineLabPlaPrior->put_CenterBefore(3);
    hr &＃61; pLineLabPlaPrior->put_CenterEnd(3);
    hr &＃61; pLineLabPlaPrior->put_CenterStart(3);
    //
    
    //
    ILineLabelPositionPtr pLineLabPos(__uuidof(LineLabelPosition));
    hr &＃61; pLineLabPos->put_Above(TRUE);
    hr &＃61; pLineLabPos->put_AtEnd(FALSE);
    hr &＃61; pLineLabPos->put_AtStart(FALSE);
    hr &＃61; pLineLabPos->put_Below(FALSE);
    hr &＃61; pLineLabPos->put_InLine(FALSE);
    hr &＃61; pLineLabPos->put_Left(FALSE);
    hr &＃61; pLineLabPos->put_OnTop(FALSE);
    hr &＃61; pLineLabPos->put_Right(FALSE);
    hr &＃61; pLineLabPos->put_Parallel(TRUE);
    hr &＃61; pLineLabPos->put_Perpendicular(FALSE);
    hr &＃61; pLineLabPos->put_Horizontal(FALSE);

    //
   
    //
    IPointPlacementPrioritiesPtr pPtPlacePrior(__uuidof(PointPlacementPriorities));
    hr &＃61; pPtPlacePrior->put_AboveCenter(2);
    hr &＃61; pPtPlacePrior->put_AboveLeft(3);
    hr &＃61; pPtPlacePrior->put_AboveRight(1);
    hr &＃61; pPtPlacePrior->put_BelowCenter(3);
    hr &＃61; pPtPlacePrior->put_BelowLeft(3);
    hr &＃61; pPtPlacePrior->put_BelowRight(3);
    hr &＃61; pPtPlacePrior->put_CenterLeft(30);
    hr &＃61; pPtPlacePrior->put_CenterRight(2);
    //
    IBasicOverposterLayerPropertiesPtr pBasicOverLyrProps(__uuidof(BasicOverposterLayerProperties));
    hr &＃61; pBasicOverLyrProps->put_NumLabelsOption(esriNoLabelRestrictions);
    hr &＃61; pBasicOverLyrProps->put_PointPlacementPriorities(pPtPlacePrior);
    hr &＃61; pBasicOverLyrProps->put_LineLabelPosition(pLineLabPos);
    hr &＃61; pBasicOverLyrProps->put_LineLabelPlacementPriorities(pLineLabPlaPrior);
    //
    CString sExpress;
    //sExpress.Format("Function FindLabel([Name],[Rank]) /n/rFindLabel&＃61;Right([Name],1)&[Rank]/n/rEnd Function");//复杂标到式&＃xff0c;下面的IsExpressionSimple需设为FALSE
    sExpress &＃61; _T("[ObjectID]& [Name]");//

    ILabelEngineLayerPropertiesPtr pLabEngLyrProps(__uuidof(LabelEngineLayerProperties));
    IAnnotateLayerPropertiesCollectionPtr pAnnoLyrPropsColl;
    pGeoFeaLyr->get_AnnotationProperties(&pAnnoLyrPropsColl);
    if(pAnnoLyrPropsColl &＃61;&＃61; NULL) return;
    pAnnoLyrPropsColl->Clear();
    IAnnotateLayerPropertiesPtr pAnnoLyrProps &＃61; pLabEngLyrProps;
    pAnnoLyrProps->put_WhereClause((_bstr_t)"[ObjectID] <&＃61; 3");

    //
    hr &＃61; pLabEngLyrProps->put_Expression(sExpress.AllocSysString());
    hr &＃61; pLabEngLyrProps->put_IsExpressionSimple(VARIANT_TRUE);
    //hr &＃61; pLabEngLyrProps->put_IsExpressionSimple(VARIANT_FALSE);
    hr &＃61; pLabEngLyrProps->putref_BasicOverposterLayerProperties(pBasicOverLyrProps);

    IAnnotationExpressionEnginePtr pAnnoExpEng(__uuidof(AnnotationVbscriptEngine));
    IAnnotationExpressionParserPtr pAnnoExpParser;
    hr &＃61; pAnnoExpEng->raw_SetExpression(_bstr_t(""),sExpress.AllocSysString(),&pAnnoExpParser);
    hr &＃61; pLabEngLyrProps->putref_ExpressionParser(pAnnoExpEng);

    IColorPtr pColor(__uuidof(RgbColor));
    pColor->put_RGB(RGB(255,0,0));

    IFontPtr pFont;
    pFont.CreateInstance("StdFont");
    pFont->put_Name((_bstr_t)"仿宋_GB2321");
    pFont->put_Bold(TRUE);
    CY cy;
    cy.Hi &＃61; 10 * 80;
    cy.Lo &＃61; 8 * 80;
    pFont->put_Size(cy);
    pFont->put_Italic(FALSE);
    pFont->put_Underline(FALSE);
    pFont->put_Strikethrough(FALSE);

    IFontDispPtr pFontDisp(pFont);

    ITextSymbolPtr pTextSym(__uuidof(TextSymbol));
    pTextSym->put_Font(pFontDisp);
    pTextSym->put_Size(18);
    pTextSym->put_Color(pColor);
    pTextSym->put_HorizontalAlignment(esriTHALeft);
    pTextSym->put_RightToLeft(VARIANT_TRUE);

    pLabEngLyrProps->putref_Symbol(pTextSym);
   
    pAnnoLyrPropsColl->Add(pAnnoLyrProps);
    pGeoFeaLyr->put_DisplayAnnotation(VARIANT_TRUE);
    IActiveViewPtr pAV;
    pAV&＃61;pMapControl->GetActiveView();
    pAV->Refresh();

///

如下为C#代码

IAnnotateLayerPropertiesCollection pAnnoProps &＃61; null;
//得到图层的标注属性集合对象

IAnnotateLayerProperties pAnnoLayerProps &＃61; null; ;
ILineLabelPosition pPosition &＃61; null;
ILineLabelPlacementPriorities pPlacement &＃61; null;
IBasicOverposterLayerProperties pBasic &＃61; null;
ILabelEngineLayerProperties pLabelEngine &＃61; null;

pAnnoProps &＃61; pGeoFeaLyr.AnnotationProperties;
pAnnoProps.Clear();
//新建标注文本的文本编号
ITextSymbol pTextSyl &＃61; null;
pTextSyl &＃61; new TextSymbolClass();

stdole.StdFont pFont;
pFont &＃61; new stdole.StdFontClass();
pFont.Name &＃61; "宋体";
pFont.Size &＃61; 5;//字体大小
pTextSyl.Font &＃61; pFont as stdole.IFontDisp;

IRgbColor pRGB &＃61; new RgbColorClass();
pRGB.Red &＃61; 110; pRGB.Blue &＃61; 200; pRGB.Green &＃61; 60;
pTextSyl.Color &＃61; pRGB;

//设置标注文本的位置
pPosition &＃61; new LineLabelPositionClass();
pPosition.Parallel &＃61; false;
pPosition.Perpendicular &＃61; true;
pPlacement &＃61; new LineLabelPlacementPrioritiesClass();
pBasic &＃61; new BasicOverposterLayerPropertiesClass();
pBasic.FeatureType &＃61; esriBasicOverposterFeatureType.esriOverposterPolyline;

pBasic.LineLabelPlacementPriorities &＃61; pPlacement;
pBasic.LineLabelPosition &＃61; pPosition;
//新建一个图层标注引擎对象&＃xff0c;设置它的属性
pLabelEngine &＃61; new LabelEngineLayerPropertiesClass();
pLabelEngine.Symbol &＃61; pTextSyl;
pLabelEngine.BasicOverposterLayerProperties &＃61; pBasic;

//field必须是这种样式&＃xff0c;如”[STATE_NAME]”
pLabelEngine.Expression &＃61; sAnnoField;
pLabelEngine.Expression &＃61; "[" &＃43; sAnnoField &＃43; "]";
pAnnoLayerProps &＃61; pLabelEngine as IAnnotateLayerProperties;
pAnnoProps.Add(pAnnoLayerProps);
pGeoFeaLyr.DisplayAnnotation &＃61; true;