mapx动态创建图层:Mapx添加永久图层的方法 疯狂代码！

mapx动态创建图层:Mapx添加永久图层的方法
on 2009-2-12 in C 教程 | 0 Comment

    在Mapx添加永久图层思路方法

    CMapXLayerInfo LayerInfo ;

    CMapXFields MapFields ;
    
    try{

        LayerInfo.CreateDispatch( LayerInfo.GetClsid ) ;
        MapFields.CreateDispatch( MapFields.GetClsid );

        MapFields.AddIntegerField( \"C_ID\" , TRUE ) ;
        MapFields.AddStringField( \"Name\" , 32 ) ;

        COleVariant vFields;
        vFields.vt = VT_DISPATCH ;
        vFields.pdispVal = MapFields;
        vFields.pdispVal->AddRef;

        LayerInfo.SetType( miLayerInfoTypeNewTable );  //如果是miLayerInfoTypeTemp则为临时图层
        LayerInfo.AddParameter(\"Filespec\" , COleVariant(\"peirenlei\") );
        LayerInfo.AddParameter(\"Name\" , COleVariant(\"peirenlei\")  );
        LayerInfo.AddParameter(\"Fields\", vFields );

        m_ctrlMapX.GetLayers.Add( LayerInfo );
        
    }
    catch(COleDispatchException* e) {
        e->ReportError;
        e->Delete;
    } catch(COleException* e) {
        e->ReportError;
        e->Delete;
    }   

Tags:  mapx5 vbmapx mapx5.0 mapx动态创建图层

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