zoukankan      html  css  js  c++  java
  • arcgis engine 监听element的添加、更新和删除事件(使用IGraphicsContainerEvents)

    IGraphicsContainerEvents Interface

    如何监听 element事件?
    如,当我们在Mapcontrol上添加、删除、更新了一个Element后,如何捕捉到这个事件?
       1,首先定义全局变量: IGraphicsContainerEvents_Event pGraphicsContainerEvent;
       2,在Form1_Load中给该变量赋值: pGraphicsContainerEvent = this.axMapControl1.ActiveView.FocusMap.BasicGraphicsLayer as IGraphicsContainerEvents_Event;
       3,添加事件处理
    pGraphicsContainerEvent.ElementAdded += new IGraphicsContainerEvents_ElementAddedEventHandler(ElementAddedMethod);
     
               pGraphicsContainerEvent.ElementDeleted +=new IGraphicsContainerEvents_ElementDeletedEventHandler(ElementDeletedMethod);
     
                pGraphicsContainerEvent.ElementUpdated += new IGraphicsContainerEvents_ElementUpdatedEventHandler( ElementUpdatedMethod);
    4,定义事件:
      private void ElementAddedMethod(IElement i)
            {
                System.Windows.Forms.MessageBox.Show("Element Added");
                axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
            }
            private void ElementDeletedMethod(IElement i)
            {
                System.Windows.Forms.MessageBox.Show("Element Deleted");
                axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
            }
            private void ElementUpdatedMethod(IElement i)
            {
                System.Windows.Forms.MessageBox.Show("Element Updated");
                axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
            }
    http://blog.sina.com.cn/s/blog_90b91bf10100yks1.html
     
     
     
     
     AllPropertiesMethodsDescription
    Event AllElementsDeleted Occurs when all the elements are deleted.
    Event ElementAdded Occurs when the element is added.
    Event ElementDeleted Occurs when the element is deleted.
    Event ElementsAdded Occurs when the elements are added.
    Event ElementUpdated Occurs when the element is updated.

  • 相关阅读:
    PPT_标题
    产品需求撰写-架构图
    测试
    SparkLauncher 1.6 版本bug
    Github fork同步
    Maven 配置远程仓库
    Sqoop2中传入配置文件中url之【坑】
    Spark性能优化-coalesce(n)
    面试算法题目
    Git 基本概念及常用命令
  • 原文地址:https://www.cnblogs.com/gisoracle/p/15630708.html
Copyright © 2011-2022 走看看