public IGeometry DrawPolyline(ESRI.ArcGIS.Carto.IActiveView activeView)
{
if (activeView == null)
{
return(null);
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = activeView.ScreenDisplay;
// Constant
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
ESRI.ArcGIS.Display.IRgbColor rgbColor = new ESRI.ArcGIS.Display.RgbColor();
rgbColor.Red = 255;
ESRI.ArcGIS.Display.IColor color = rgbColor; // Implicit Cast
ESRI.ArcGIS.Display.ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbol();
simpleLineSymbol.Color = color;
simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDot;
ESRI.ArcGIS.Display.ISymbol symbol = (ESRI.ArcGIS.Display.ISymbol)simpleLineSymbol; // Explicit Cast
ESRI.ArcGIS.Display.IRubberBand rubberBand = new RubberLine();
ESRI.ArcGIS.Geometry.IGeometry geometry = rubberBand.TrackNew(screenDisplay, symbol);
screenDisplay.SetSymbol(symbol);
screenDisplay.DrawPolyline(geometry);
screenDisplay.FinishDrawing();
return(geometry);
}
private void line绘制线ToolStripMenuItem_Click(object sender, EventArgs e)
{
// 创建图形
IPolyline pPolyline = new Polyline() as IPolyline;
IRubberBand pRubberBand = new RubberLine();
pPolyline = pRubberBand.TrackNew(axMapControl1.ActiveView.ScreenDisplay, null) as IPolyline;
// 创建符号
ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();
pSimpleLineSymbol.Width = 2;
pSimpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
// pSimpleLineSymbol.Color = GetRGBColor(44, 44, 44);
// 创建Element并赋值图形和符号
ILineElement pLineElement = new LineElement() as ILineElement;
IElement pElement = pLineElement as IElement;
pElement.Geometry = pPolyline;
pLineElement.Symbol = pSimpleLineSymbol;
// 添加到IGraphicsContainer容器
IGraphicsContainer pGraphicsContainer = axMapControl1.Map as IGraphicsContainer;
pGraphicsContainer.AddElement(pLineElement as IElement, 0);
axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
protected override void OnMouseDown(MouseEventArgs arg)
{
IMxDocument pmxdoc = ArcMap.Application.Document as IMxDocument;
IRubberBand pRubber = new RubberLine();
IPolyline pPolyline = pRubber.TrackNew(pmxdoc.ActiveView.ScreenDisplay, null) as IPolyline;
IElement pElement = new LineElement();
ILineElement pLineElement = pElement as ILineElement;
pLineElement.Symbol = new SimpleLineSymbol();
pElement.Geometry = pPolyline;
IElementProperties pElementProp = pElement as IElementProperties;
pElementProp.Name = "Hussein Element " + ++i;
IGraphicsContainer pgc = pmxdoc.ActiveView.GraphicsContainer;
pgc.AddElement(pElement, 0);
pmxdoc.ActiveView.Refresh();
}