MapX 控件在C# 中的应用

 

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace wa
...{
    public class frmMain : System.Windows.Forms.Form
    ...{
        private AxMapXLib.AxMap mapMain;
        private double MapZoom;
        private double CenterX;
        private double CenterY;
        private System.Windows.Forms.StatusBar sbMain;
        private System.Windows.Forms.MainMenu mainMenu;
        private System.Windows.Forms.MenuItem miMap;
        private System.Windows.Forms.MenuItem miMapToolZoomIn;
        private System.Windows.Forms.MenuItem miMapToolZoomout;
        private System.Windows.Forms.MenuItem miMapToolPan;
        private System.Windows.Forms.MenuItem miMapToolRestore;
        private System.Windows.Forms.MenuItem miMapToolDistance;
        private System.Windows.Forms.MenuItem miMapToolArea;
        private System.Windows.Forms.MenuItem miMapTool;
        private System.ComponentModel.Container components = null;
 
        public frmMain()
        ...{
            InitializeComponent();
        }
 
        protected override void Dispose( bool disposing )
        ...{
            //略
        }
 
        Windows 窗体设计器生成的代码#region Windows 窗体设计器生成的代码       
        private void InitializeComponent()
        ...{
            //略
        }
        #endregion

        [STAThread]
        static void Main() 
        ...{
            Application.Run(new Form1());
        }
 
        private void mapMain_PolyToolUsed(object sender, AxMapXLib.CMapXEvents_PolyToolUsedEvent e)
        ...{
            if(e.toolNum == 99)//测量距离
            ...{
                MapXLib.Points pts = (MapXLib.Points)e.points;
                MapXLib.Point pt1,pt2;
                double d=0.0;
 
                //计算顺序两个点距离,累计得到总距离
                for(int i=1;i<pts.Count;i++)
                ...{
                    pt1=pts.Item(i);
                    pt2=pts.Item(i+1);
                    d += mapMain.Distance(pt1.X,pt1.Y,pt2.X,pt2.Y);
                }

                sbMain.Text = "距离:" + d.ToString();
            }
            else if(e.toolNum == 98)//面积
            ...{
                MapXLib.Points pts = (MapXLib.Points)e.points;
                //偷懒了但是很正确
                MapXLib.FeatureFactory dd = mapMain.FeatureFactory;
                MapXLib.Style style = mapMain.DefaultStyle;
                sbMain.Text = "面积:" + dd.CreateRegion(pts,style).Area.ToString();
            }
        }
 
        private void miMapToolZoomIn_Click(object sender, System.EventArgs e)
        ...{
            //放大
            mapMain.CurrentTool = MapXLib.ToolConstants.miZoomInTool;
        } 
 
        private void miMapToolZoomout_Click(object sender, System.EventArgs e)
        ...{
            //缩小
            mapMain.CurrentTool = MapXLib.ToolConstants.miZoomOutTool;
        }
 
        private void miMapToolPan_Click(object sender, System.EventArgs e)
        ...{
            //拖动
            mapMain.CurrentTool = MapXLib.ToolConstants.miPanTool;
        } 
 
        private void miMapToolRestore_Click(object sender, System.EventArgs e)
        ...{
            //缩放到初始大小(全图)
            mapMain.ZoomTo(this.MapZoom,this.CenterX,this.CenterY);
        }
 
        private void miMapToolDistance_Click(object sender, System.EventArgs e)
        ...{
            //测量距离
            mapMain.CurrentTool = (MapXLib.ToolConstants)99;
        }
 
        private void miMapToolArea_Click(object sender, System.EventArgs e)
        ...{
            //测量面积
            mapMain.CurrentTool = (MapXLib.ToolConstants) 98;
        }
 
        private void frmMain_Load(object sender, System.EventArgs e)
        ...{
            //记录地图的比例合中心点
            this.MapZoom = mapMain.Zoom;
            this.CenterX = mapMain.CenterX;
            this.CenterY = mapMain.CenterY;
 
            //创建测量距离的
            mapMain.CreateCustomTool(99,(short)MapXLib.ToolTypeConstants.miToolTypePoly,MapXLib.CursorConstants.miCrossCursor,
                MapXLib.CursorConstants.miCrossCursor,MapXLib.CursorConstants.miCrossCursor,false);
 
            //创建测量面积的工具
            mapMain.CreateCustomTool(98,(short)MapXLib.ToolTypeConstants.miToolTypePolygon,MapXLib.CursorConstants.miCrossCursor,
                MapXLib.CursorConstants.miCrossCursor,MapXLib.CursorConstants.miCrossCursor,false);
        }
    }
}