private void MapControl_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
if (DrawElementType == EDrawElementType.None || e.button != 1)
{
return;
}
MapControl.MousePointer = esriControlsMousePointer.esriPointerCrosshair;
IGraphicsContainer graphicsContainer = (IGraphicsContainer)MapControl.Map;
#region 绘制元素
switch (DrawElementType)
{
case EDrawElementType.Point:
var markerElement = graphicsContainer.CreatePointElement(MapControl.ToMapPoint(e.x, e.y));
markerElement.Symbol = MarkerSymbol;
break;
case EDrawElementType.Polyline:
var lineElement = graphicsContainer.CreatePolylineElement((IPolyline)MapControl.TrackLine());
lineElement.Symbol = LineSymbol;
break;
case EDrawElementType.Polygon:
var polygonElement = graphicsContainer.CreatePolygonElement((IPolygon)MapControl.TrackPolygon());
polygonElement.Symbol = FillSymbol;
break;
case EDrawElementType.Circle:
var circleElement = graphicsContainer.CreateCircleElement(MapControl.TrackCircle());
circleElement.Symbol = FillSymbol;
break;
case EDrawElementType.Rectangle:
var rectangleElement = graphicsContainer.CreateRectangleElement(MapControl.TrackRectangle());
rectangleElement.Symbol = FillSymbol;
break;
case EDrawElementType.Text:
var textElement = graphicsContainer.CreateTextElement(MapControl.ToMapPoint(e.x, e.y));
textElement.Symbol = TextSymbol;
break;
}
#endregion
((IActiveView)graphicsContainer).PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}