form1.cs

使用arcAE,自己编写的点选工具,选中要素

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.ToolbarControl;
using ESRI.ArcGIS.TOCControl;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.ControlCommands;
using ESRI.ArcGIS.DataSourcesGDB;

using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.Utility.CATIDs;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.MapControl;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.PageLayoutControl;
using ESRI.ArcGIS.Utility;

namespace PointSelection
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private ESRI.ArcGIS.MapControl.AxMapControl axMapControl1;
		private ESRI.ArcGIS.ToolbarControl.AxToolbarControl axToolbarControl1;
		private System.Windows.Forms.Button button1;
			private IAoInitialize m_AoInitialize = new AoInitializeClass();
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.axMapControl1 = new ESRI.ArcGIS.MapControl.AxMapControl();
			this.axToolbarControl1 = new ESRI.ArcGIS.ToolbarControl.AxToolbarControl();
			this.button1 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.axToolbarControl1)).BeginInit();
			this.SuspendLayout();
			// 
			// axMapControl1
			// 
			this.axMapControl1.Location = new System.Drawing.Point(24, 40);
			this.axMapControl1.Name = "axMapControl1";
			this.axMapControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axMapControl1.OcxState")));
			this.axMapControl1.Size = new System.Drawing.Size(880, 632);
			this.axMapControl1.TabIndex = 0;
			this.axMapControl1.OnMouseDown += new ESRI.ArcGIS.MapControl.IMapControlEvents2_OnMouseDownEventHandler(this.axMapControl1_OnMouseDown);
			this.axMapControl1.OnMouseUp += new ESRI.ArcGIS.MapControl.IMapControlEvents2_OnMouseUpEventHandler(this.axMapControl1_OnMouseUp);
			// 
			// axToolbarControl1
			// 
			this.axToolbarControl1.Location = new System.Drawing.Point(32, 8);
			this.axToolbarControl1.Name = "axToolbarControl1";
			this.axToolbarControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axToolbarControl1.OcxState")));
			this.axToolbarControl1.Size = new System.Drawing.Size(192, 26);
			this.axToolbarControl1.TabIndex = 1;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(288, 8);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(40, 24);
			this.button1.TabIndex = 2;
			this.button1.Text = "点选";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(928, 694);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.axToolbarControl1);
			this.Controls.Add(this.axMapControl1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
			this.Load += new System.EventHandler(this.Form1_Load);
			((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.axToolbarControl1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			axToolbarControl1.Enabled=true;
			string filename=@"C:\\Program Files\\ArcGIS\\DeveloperKit\\samples\\data\\usa\\usa.mxd";
		
			axToolbarControl1.SetBuddyControl(axMapControl1);
			this.SetStyle(ControlStyles.EnableNotifyMessage,true);
			this.axMapControl1.LoadMxFile(filename,"","");

		}
		private void PointSelection(int x,int y,IMap m_pMap,ILayer m_CurrentLayer)
		{
			IGeoFeatureLayer pGFeat=m_CurrentLayer as IGeoFeatureLayer;
			IFeatureClass pFeatureClass=pGFeat.FeatureClass;
			IActiveView activeView=m_pMap as IActiveView;
			IPoint pPoint = activeView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y);
			IGeometry pGeometry=pPoint as IGeometry;
			double length=ConvertPixelsToMapUnits(activeView,4);
			ITopologicalOperator pTopo=pGeometry as ITopologicalOperator;
			IGeometry pBuffer=pTopo.Buffer(length);
			pGeometry=pBuffer.Envelope;
			ISpatialFilter pSpatialFiler=new SpatialFilterClass();
			//IFilter pFilter=null;
			switch(pFeatureClass.ShapeType)
			{
				case esriGeometryType.esriGeometryPoint: 
					pSpatialFiler.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
					break;
				case esriGeometryType.esriGeometryPolyline:
					pSpatialFiler.SpatialRel = esriSpatialRelEnum.esriSpatialRelCrosses;
					break;
				case esriGeometryType.esriGeometryPolygon:
					pSpatialFiler.SpatialRel = esriSpatialRelEnum.esriSpatialRelEnvelopeIntersects;
					break;
			}
			pSpatialFiler.GeometryField=pFeatureClass.ShapeFieldName;
			//pFilter=pSpatialFiler;
			IFeatureCursor pCursor=pGFeat.Search(pSpatialFiler,false);
			IFeature pFeature=pCursor.NextFeature();
			while(pFeature!=null)
			{
				m_pMap.SelectFeature(m_CurrentLayer,pFeature);
				pFeature=pCursor.NextFeature();
			}

		}
		private double  ConvertPixelsToMapUnits(IActiveView pActiveView,double pixlUnits)
		{
			double realWorldDisplayEntent;
			int pixelExtent;
			double sizeOfOnePixel;
			//IDisplayTransformation pDispTranf=pActiveView.ScreenDisplay.DisplayTransformation;
            
			pixelExtent=pActiveView.ScreenDisplay.DisplayTransformation.get_DeviceFrame().right-pActiveView.ScreenDisplay.DisplayTransformation.get_DeviceFrame().left;
			realWorldDisplayEntent=pActiveView.ScreenDisplay.DisplayTransformation.VisibleBounds.Width;
			sizeOfOnePixel=realWorldDisplayEntent/pixelExtent;
			return pixlUnits*sizeOfOnePixel;

		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			// IGeoFeatureLayer pgf2=this.axMapControl1 .Map.get_Layer(3) as IGeoFeatureLayer;

		}

		private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			ESRI.ArcGIS.Utility.COMSupport.AOUninitialize.Shutdown();
			m_AoInitialize.Shutdown();
		}

		private void axMapControl1_OnMouseDown(object sender, ESRI.ArcGIS.MapControl.IMapControlEvents2_OnMouseDownEvent e)
		{
			//IGeoFeatureLayer pgf2=this.axMapControl1 .Map.get_Layer(3) as IGeoFeatureLayer;
			IMap pmap1=this.axMapControl1 .Map;
			ILayer pLayer=this.axMapControl1 .Map.get_Layer(0);
			PointSelection(e.x,e.y ,pmap1, pLayer);

		
		}

		private void axMapControl1_OnMouseUp(object sender, ESRI.ArcGIS.MapControl.IMapControlEvents2_OnMouseUpEvent e)
		{
			IMap pmap1=this.axMapControl1 .Map;
			ILayer pLayer=this.axMapControl1 .Map.get_Layer(0);
			PointSelection(e.x,e.y ,pmap1, pLayer);
		}
	}
}