/*地图控件事件响应 * */ private void axMapControl_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e) { return; ISimpleLineSymbol pSimpleLineSymbol; pSimpleLineSymbol = new SimpleLineSymbolClass(); pSimpleLineSymbol.Color = SymbolSuppler.getRGB(230, 10, 60); pSimpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDot; pSimpleLineSymbol.Width = 3; IGeometry pGeo; pGeo = axMapControl.TrackLine(); object oLineSymbol = pSimpleLineSymbol; axMapControl.DrawShape(pGeo, ref oLineSymbol); }