private bool method_2(IElement ielement_1, out ICallout icallout_0)
{
icallout_0 = null;
try
{
if (ielement_1 is ITextElement)
{
ITextElement element = ielement_1 as ITextElement;
ITextSymbol symbol = element.Symbol;
if (!(symbol is IFormattedTextSymbol))
{
return(false);
}
IFormattedTextSymbol symbol2 = symbol as IFormattedTextSymbol;
ITextBackground background = symbol2.Background;
if (background == null)
{
return(false);
}
if (!(background is ICallout))
{
return(false);
}
icallout_0 = background as ICallout;
return(true);
}
if (ielement_1 is IMarkerElement)
{
IMarkerElement element2 = ielement_1 as IMarkerElement;
IMarkerSymbol symbol3 = element2.Symbol;
if (!(symbol3 is IMarkerBackgroundSupport))
{
return(false);
}
IMarkerBackgroundSupport support = symbol3 as IMarkerBackgroundSupport;
IMarkerBackground background2 = support.Background;
if (background2 == null)
{
return(false);
}
if (!(background2 is ICallout))
{
return(false);
}
icallout_0 = background2 as ICallout;
return(true);
}
}
catch
{
}
return(false);
}
//TextSymbol
private void button18_Click(object sender, EventArgs e)
{
ITextSymbol textSymbol = new TextSymbolClass();
System.Drawing.Font drawFont = new System.Drawing.Font("宋体", 16, FontStyle.Bold);
stdole.IFontDisp fontDisp = (stdole.IFontDisp)(new stdole.StdFontClass());
textSymbol.Font = fontDisp;
textSymbol.Color = getRGB(0, 255, 0);
textSymbol.Size = 20;
IPolyline polyline = new PolylineClass();
IPoint point = new PointClass();
point.PutCoords(1, 1);
polyline.FromPoint = point;
point.PutCoords(10, 10);
polyline.ToPoint = point;
ITextPath textPath = new BezierTextPathClass();
//创建简单标注
ILineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Color = getRGB(255, 0, 0);
lineSymbol.Width = 5;
ISimpleTextSymbol simpleTextSymbol = textSymbol as ISimpleTextSymbol;
simpleTextSymbol.TextPath = textPath;
object oLineSymbol = lineSymbol;
object oTextSymbol = textSymbol;
IActiveView activeView = this.axMapControl1.ActiveView;
activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);
activeView.ScreenDisplay.SetSymbol(oLineSymbol as ISymbol);
activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);
activeView.ScreenDisplay.SetSymbol(oTextSymbol as ISymbol);
activeView.ScreenDisplay.DrawText(polyline as IGeometry, "简单标注");;
activeView.ScreenDisplay.FinishDrawing();
//创建气泡标注（两中风格，一种是有锚点，一种是marker方式）
//锚点方式
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
simpleFillSymbol.Color = getRGB(0, 255, 0);
simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;
IBalloonCallout balloonCallout = new BalloonCalloutClass();
balloonCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle;
balloonCallout.Symbol = simpleFillSymbol;
balloonCallout.LeaderTolerance = 10;
point.PutCoords(5, 5);
balloonCallout.AnchorPoint = point;
IGraphicsContainer graphicsContainer = activeView as IGraphicsContainer;
IFormattedTextSymbol formattedTextSymbol = new TextSymbolClass();
formattedTextSymbol.Color = getRGB(0, 0, 255);
point.PutCoords(10, 5);
ITextBackground textBackground = balloonCallout as ITextBackground;
formattedTextSymbol.Background = textBackground;
activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);
activeView.ScreenDisplay.SetSymbol(formattedTextSymbol as ISymbol);
activeView.ScreenDisplay.DrawText(point as IGeometry, "气泡1");
activeView.ScreenDisplay.FinishDrawing();
//marker方式
textSymbol = new TextSymbolClass();
textSymbol.Color = getRGB(255, 0, 0);
textSymbol.Angle = 0;
textSymbol.RightToLeft = false;
textSymbol.VerticalAlignment = esriTextVerticalAlignment.esriTVABaseline;
textSymbol.HorizontalAlignment = esriTextHorizontalAlignment.esriTHAFull;
IMarkerTextBackground markerTextBackground = new MarkerTextBackgroundClass();
markerTextBackground.ScaleToFit = true;
markerTextBackground.TextSymbol = textSymbol;
IRgbColor rgbColor = new RgbColorClass();
IPictureMarkerSymbol pictureMarkerSymbol = new PictureMarkerSymbolClass();
//string fileName = @"E:\vs2005\第五章\lesson2\lesson2\data\qq.bmp";
string path = Directory.GetCurrentDirectory();
string fileName = path + @"\qq.bmp";
pictureMarkerSymbol.CreateMarkerSymbolFromFile(esriIPictureType.esriIPictureBitmap, fileName);
pictureMarkerSymbol.Angle = 0;
pictureMarkerSymbol.BitmapTransparencyColor = rgbColor;
pictureMarkerSymbol.Size = 20;
pictureMarkerSymbol.XOffset = 0;
pictureMarkerSymbol.YOffset = 0;
markerTextBackground.Symbol = pictureMarkerSymbol as IMarkerSymbol;
formattedTextSymbol = new TextSymbolClass();
formattedTextSymbol.Color = getRGB(255, 0, 0);
fontDisp.Size = 10;
fontDisp.Bold = true;
formattedTextSymbol.Font = fontDisp;
point.PutCoords(15, 5);
formattedTextSymbol.Background = markerTextBackground;
activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);
activeView.ScreenDisplay.SetSymbol(formattedTextSymbol as ISymbol);
activeView.ScreenDisplay.DrawText(point as IGeometry, "气泡2");
activeView.ScreenDisplay.FinishDrawing();
}
