GMap.Net开发之自定义Marker
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using GMap.NET; using GMap.NET.WindowsForms; using GMap.NET.MapProviders; using GMap.NET.WindowsForms.Markers; namespace GMapWinFormDemo { public partial class MainForm : Form { private GMapOverlay objects = new GMapOverlay("objects"); //放置marker的图层 private GMapMarkerImage currentMarker; private bool isLeftButtonDown = false; private Timer blinkTimer = new Timer(); public MainForm() { InitializeComponent(); try { System.Net.IPHostEntry e = System.Net.Dns.GetHostEntry("ditu.google.cn"); } catch { mapControl.Manager.Mode = AccessMode.CacheOnly; MessageBox.Show("No internet connection avaible, going to CacheOnly mode.", "GMap.NET Demo", MessageBoxButtons.OK, MessageBoxIcon.Warning); } mapControl.CacheLocation = Environment.CurrentDirectory + "\\GMapCache\\"; //缓存位置 mapControl.MapProvider = GMapProviders.GoogleChinaMap; //google china 地图 mapControl.MinZoom = 2; //最小比例 mapControl.MaxZoom = 17; //最大比例 mapControl.Zoom = 5; //当前比例 mapControl.ShowCenter = false; //不显示中心十字点 mapControl.DragButton = System.Windows.Forms.MouseButtons.Left; //左键拖拽地图 mapControl.Position = new PointLatLng(32.064,118.704); //地图中心位置：南京 mapControl.OnMapZoomChanged += new MapZoomChanged(mapControl_OnMapZoomChanged); mapControl.MouseClick += new MouseEventHandler(mapControl_MouseClick); mapControl.MouseDown += new MouseEventHandler(mapControl_MouseDown); mapControl.MouseUp += new MouseEventHandler(mapControl_MouseUp); mapControl.MouseMove += new MouseEventHandler(mapControl_MouseMove); mapControl.OnMarkerClick += new MarkerClick(mapControl_OnMarkerClick); mapControl.OnMarkerEnter += new MarkerEnter(mapControl_OnMarkerEnter); mapControl.OnMarkerLeave += new MarkerLeave(mapControl_OnMarkerLeave); mapControl.Overlays.Add(objects); } void mapControl_MouseMove(object sender, MouseEventArgs e) { if (e.Button == System.Windows.Forms.MouseButtons.Left && isLeftButtonDown) { if (currentMarker != null) { PointLatLng point = mapControl.FromLocalToLatLng(e.X, e.Y); currentMarker.Position = point; currentMarker.ToolTipText = string.Format("{0},{1}", point.Lat, point.Lng); } } } void mapControl_MouseUp(object sender, MouseEventArgs e) { if (e.Button == System.Windows.Forms.MouseButtons.Left) { isLeftButtonDown = false; } } void mapControl_MouseDown(object sender, MouseEventArgs e) { if (e.Button == System.Windows.Forms.MouseButtons.Left) { isLeftButtonDown = true; } } void mapControl_OnMarkerLeave(GMapMarker item) { if (item is GMapMarkerImage) { currentMarker = null; GMapMarkerImage m = item as GMapMarkerImage; m.Pen.Dispose(); m.Pen = null; } } void mapControl_OnMarkerEnter(GMapMarker item) { if (item is GMapMarkerImage) { currentMarker = item as GMapMarkerImage; currentMarker.Pen = new Pen(Brushes.Red, 2); } } void mapControl_OnMarkerClick(GMapMarker item, MouseEventArgs e) { } void mapControl_MouseClick(object sender, MouseEventArgs e) { if(e.Button == System.Windows.Forms.MouseButtons.Right) { //objects.Markers.Clear(); PointLatLng point = mapControl.FromLocalToLatLng(e.X,e.Y); //GMapMarker marker = new GMarkerGoogle(point, GMarkerGoogleType.green); Bitmap bitmap = Bitmap.FromFile("F:\\Projects\\GMapDemo\\GMapDemo\\Image\\A.png") as Bitmap; //GMapMarker marker = new GMarkerGoogle(point, bitmap); GMapMarker marker = new GMapMarkerImage(point, bitmap); marker.ToolTipMode = MarkerTooltipMode.OnMouseOver; marker.ToolTipText = string.Format("{0},{1}", point.Lat, point.Lng); objects.Markers.Add(marker); } } void mapControl_OnMapZoomChanged() { } private void buttonBeginBlink_Click(object sender, EventArgs e) { blinkTimer.Interval = 1000; blinkTimer.Tick += new EventHandler(blinkTimer_Tick); blinkTimer.Start(); } void blinkTimer_Tick(object sender, EventArgs e) { foreach (GMapMarker m in objects.Markers) { if (m is GMapMarkerImage) { GMapMarkerImage marker = m as GMapMarkerImage; if (marker.OutPen == null) marker.OutPen = new Pen(Brushes.Red, 2); else { marker.OutPen.Dispose(); marker.OutPen = null; } } } mapControl.Refresh(); } private void buttonStopBlink_Click(object sender, EventArgs e) { blinkTimer.Stop(); foreach (GMapMarker m in objects.Markers) { if (m is GMapMarkerImage) { GMapMarkerImage marker = m as GMapMarkerImage; marker.OutPen.Dispose(); marker.OutPen = null; } } mapControl.Refresh(); } } } 作者： 阿凡卢 出处： http://www.cnblogs.com/luxiaoxun/ 本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。http://www.cnblogs.com/luxiaoxun/p/3475355.html
