public void DrawPolygon(ESRI.ArcGIS.Carto.IActiveView activeView)
{
if (activeView == null)
{
return;
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = activeView.ScreenDisplay;
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
ESRI.ArcGIS.Display.IRgbColor rgbColor = new ESRI.ArcGIS.Display.RgbColorClass();
rgbColor.Red = 255;
ESRI.ArcGIS.Display.IColor color = rgbColor; // Implicit Cast
ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new ESRI.ArcGIS.Display.SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
ESRI.ArcGIS.Display.IRubberBand rubberBand = new ESRI.ArcGIS.Display.RubberPolygonClass();
ESRI.ArcGIS.Geometry.IGeometry geometry = rubberBand.TrackNew(screenDisplay, symbol);
screenDisplay.SetSymbol(symbol);
screenDisplay.DrawPolygon(geometry);
screenDisplay.FinishDrawing();
}
private void _drawPolygon()
{
if (this._axMapCtrl.ActiveView == null)
{
return;
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = this._axMapCtrl.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.RgbColorClass();
rgbColor.Red = 255;
ESRI.ArcGIS.Display.IColor color = rgbColor; // Implicit cast.
ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new
ESRI.ArcGIS.Display.SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as
ESRI.ArcGIS.Display.ISymbol; // Dynamic cast.
ESRI.ArcGIS.Display.IRubberBand rubberBand = new
ESRI.ArcGIS.Display.RubberPolygonClass();
ESRI.ArcGIS.Geometry.IGeometry geometry = rubberBand.TrackNew(screenDisplay,
symbol);
screenDisplay.SetSymbol(symbol);
//screenDisplay.DrawPolygon(geometry);
screenDisplay.FinishDrawing();
PolygonElementClass element = new PolygonElementClass();
element.Geometry = geometry;
// Create lineSymbol
ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
// set color & style,....
ESRI.ArcGIS.Display.IRgbColor lineColor = new ESRI.ArcGIS.Display.RgbColorClass();
lineColor.Red = 255;
lineSymbol.Color = lineColor;
lineSymbol.Width = 3;
// Create fillSymbol
ISimpleFillSymbol fillSymbol = new SimpleFillSymbolClass();
fillSymbol.Outline = lineSymbol;
ESRI.ArcGIS.Display.IRgbColor fillColor = new ESRI.ArcGIS.Display.RgbColorClass();
fillColor.Red = 255;
fillColor.Green = 255;
fillSymbol.Color = fillColor;
fillSymbol.Style = esriSimpleFillStyle.esriSFSHollow;
element.Symbol = fillSymbol;
this._axMapCtrl.ActiveView.GraphicsContainer.AddElement(element, 0);
//((IGraphicsContainerSelect)(this._axMapCtrl.ActiveView.GraphicsContainer)).SelectElement(element);
this._axMapCtrl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
if (this._polygonName != "")
{
element.Name = this._polygonName;
this._polygonName = "";
}
/*
else
{
int count = 0;
IGraphicsContainer container = this._axMapCtrl.ActiveView.GraphicsContainer;
container.Reset();
while (container.Next() != null)
{
count++;
}
element.Name = "Element " + count;
}
*/
if (PolygonDrawn != null)
{
PolygonDrawn(element.Name);
}
}