ARCGIS动态画点

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我是靠谱客的博主甜蜜面包，最近开发中收集的这篇文章主要介绍ARCGIS动态画点，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

小马哥淡定 原文 ARCGIS动态画点

private void DrawPointOnMap(double x, double y,bool clear)
{
IMapControl2 pMapCtrl = (IMapControl2)mapCtrl.Object;
IGraphicsLayer pGraphicsLyr = mapCtrl.Map.BasicGraphicsLayer;
IActiveView pView = mapCtrl.ActiveView;
IGraphicsContainer pGraphicsContainer = (IGraphicsContainer)pGraphicsLyr;
IPoint pnt = new PointClass();
pnt.X = x;
pnt.Y = y;
IScreenDisplay pDisp = pView.ScreenDisplay;
pDisp.StartDrawing(pDisp.hDC, (short)(ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache));
pDisp.SetSymbol(new SimpleMarkerSymbolClass());
//下面两句关键

pGraphicsContainer.DeleteAllElements();
pView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
pDisp.DrawPoint(pnt);
pDisp.FinishDrawing(); // When FinishDrawing is called, all the caches get flushed to the screen. FinishDrawing must be called before StartDrawing can be called again. 
IMarkerElement pMkElmt = new MarkerElementClass();
IElement pElmt = (IElement)pMkElmt;
pMkElmt.Symbol = new SimpleMarkerSymbolClass();
pElmt.Geometry = pnt;
pGraphicsContainer.AddElement(pElmt, 0);
IGeometry geo = pElmt.Geometry;
//mapCtrl.FlashShape(geo, 5, 1000, null);

}