private Bitmap DrawToPictureBox(ISymbol pSym, PictureBox pBox)
{
IPoint pPoint = null;
IGeometry pGeometry = null;
int hDC;
System.Drawing.Graphics pGraphics = null;
pGraphics = System.Drawing.Graphics.FromHwnd(pBox.Handle);
//clear drawing canvas
pGraphics.FillRectangle(System.Drawing.Brushes.White, pBox.ClientRectangle);
if (pSym is IMarkerSymbol)
{
pPoint = new PointClass(); //the geometry of a MarkerSymbol
pPoint.PutCoords(pBox.Width / 2, pBox.Height / 2); //center in middle of pBox
pGeometry = pPoint;
}
if (pSym is ILineSymbol)
{
ISegmentCollection polyline = new ESRI.ArcGIS.Geometry.PolylineClass();
ISegment line = new ESRI.ArcGIS.Geometry.LineClass();
IPoint fromPoint = new PointClass();
fromPoint.PutCoords(pBox.Left, pBox.Bottom);
IPoint toPoint = new PointClass();
toPoint.PutCoords(pBox.Right, pBox.Top);
line.FromPoint = fromPoint;
line.ToPoint = toPoint;
object missing = Type.Missing;
polyline.AddSegment(line, ref missing, ref missing);
pGeometry = polyline as IGeometry;
}
if (pSym is IFillSymbol)
{
IEnvelope pEnvelope = new EnvelopeClass();
pEnvelope.PutCoords(pBox.Left, pBox.Top, pBox.Right, pBox.Bottom);
pGeometry = pEnvelope;
}
hDC = GetDC(pBox.Handle.ToInt32());
pSym.SetupDC(hDC, null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
pSym.Draw(pGeometry);
pSym.ResetDC();
Bitmap image = new Bitmap(pBox.Width, pBox.Height, pGraphics);
Graphics g2 = Graphics.FromImage(image);
//获得屏幕的句柄
IntPtr dc3 = pGraphics.GetHdc();
//获得位图的句柄
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, pBox.Width, pBox.Height, dc3, 0, 0, SRCCOPY);
pGraphics.ReleaseHdc(dc3); //释放屏幕句柄
g2.ReleaseHdc(dc2); //释放位图句柄
//image.Save("c:\\MyJpeg.Icon", ImageFormat.Bmp);
return(image);
}
private void DrawToTarget(ISymbol pSym, PictureBox pBox)
{
IPoint pPoint = null;
IGeometry pGeometry = null;
IDisplayTransformation pDisplayTrans = null;
if (pSym is IMarkerSymbol)
{
pPoint = new PointClass(); //the geometry of a MarkerSymbol
pPoint.PutCoords(pBox.Width / 2, pBox.Height / 2); //center in middle of pBox
pGeometry = pPoint;
}
if (pSym is ILineSymbol)
{
ISegmentCollection polyline = new ESRI.ArcGIS.Geometry.PolylineClass();
ISegment line = new ESRI.ArcGIS.Geometry.LineClass();
IPoint fromPoint = new PointClass();
fromPoint.PutCoords(pBox.Left, pBox.Bottom);
IPoint toPoint = new PointClass();
toPoint.PutCoords(pBox.Right, pBox.Top);
line.FromPoint = fromPoint;
line.ToPoint = toPoint;
object missing = Type.Missing;
polyline.AddSegment(line, ref missing, ref missing);
pGeometry = polyline as IGeometry;
}
if (pSym is IFillSymbol)
{
IEnvelope pEnvelope = new EnvelopeClass();
pEnvelope.PutCoords(pBox.Left, pBox.Top, pBox.Right, pBox.Bottom);
pGeometry = pEnvelope;
}
pDisplayTrans = getTransformation(pBox) as IDisplayTransformation;
pSym.SetupDC(pBox.Handle.ToInt32(), null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
pSym.Draw(pGeometry);
pSym.ResetDC();
}
private void DrawToTarget(ISymbol pSym, PictureBox pBox)
{
IPoint pPoint = null;
IGeometry pGeometry = null;
IDisplayTransformation pDisplayTrans = null;
if (pSym is IMarkerSymbol)
{
pPoint = new PointClass(); //the geometry of a MarkerSymbol
pPoint.PutCoords(pBox.Width / 2, pBox.Height / 2); //center in middle of pBox
pGeometry = pPoint;
}
if (pSym is ILineSymbol)
{
ISegmentCollection polyline = new ESRI.ArcGIS.Geometry.PolylineClass();
ISegment line = new ESRI.ArcGIS.Geometry.LineClass();
IPoint fromPoint = new PointClass();
fromPoint.PutCoords(pBox.Left, pBox.Bottom);
IPoint toPoint = new PointClass();
toPoint.PutCoords(pBox.Right, pBox.Top);
line.FromPoint = fromPoint;
line.ToPoint = toPoint;
object missing = Type.Missing;
polyline.AddSegment(line, ref missing, ref missing);
pGeometry = polyline as IGeometry;
}
if (pSym is IFillSymbol)
{
IEnvelope pEnvelope = new EnvelopeClass();
pEnvelope.PutCoords(pBox.Left, pBox.Top, pBox.Right, pBox.Bottom);
pGeometry = pEnvelope;
}
pDisplayTrans = getTransformation(pBox) as IDisplayTransformation;
pSym.SetupDC(pBox.Handle.ToInt32(), null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
pSym.Draw(pGeometry);
pSym.ResetDC();
}
private Bitmap DrawToPictureBox(ISymbol pSym, PictureBox pBox)
{
IPoint pPoint = null;
IGeometry pGeometry = null;
int hDC;
System.Drawing.Graphics pGraphics = null;
pGraphics = System.Drawing.Graphics.FromHwnd(pBox.Handle);
//clear drawing canvas
pGraphics.FillRectangle(System.Drawing.Brushes.White, pBox.ClientRectangle);
if (pSym is IMarkerSymbol)
{
pPoint = new PointClass(); //the geometry of a MarkerSymbol
pPoint.PutCoords(pBox.Width / 2, pBox.Height / 2); //center in middle of pBox
pGeometry = pPoint;
}
if (pSym is ILineSymbol)
{
ISegmentCollection polyline = new ESRI.ArcGIS.Geometry.PolylineClass();
ISegment line = new ESRI.ArcGIS.Geometry.LineClass();
IPoint fromPoint = new PointClass();
fromPoint.PutCoords(pBox.Left, pBox.Bottom);
IPoint toPoint = new PointClass();
toPoint.PutCoords(pBox.Right, pBox.Top);
line.FromPoint = fromPoint;
line.ToPoint = toPoint;
object missing = Type.Missing;
polyline.AddSegment(line, ref missing, ref missing);
pGeometry = polyline as IGeometry;
}
if (pSym is IFillSymbol)
{
IEnvelope pEnvelope = new EnvelopeClass();
pEnvelope.PutCoords(pBox.Left, pBox.Top, pBox.Right, pBox.Bottom);
pGeometry = pEnvelope;
}
hDC = GetDC(pBox.Handle.ToInt32());
pSym.SetupDC(hDC, null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
pSym.Draw(pGeometry);
pSym.ResetDC();
Bitmap image = new Bitmap(pBox.Width, pBox.Height, pGraphics);
Graphics g2 = Graphics.FromImage(image);
//获得屏幕的句柄
IntPtr dc3 = pGraphics.GetHdc();
//获得位图的句柄
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, pBox.Width, pBox.Height, dc3, 0, 0, SRCCOPY);
pGraphics.ReleaseHdc(dc3);//释放屏幕句柄
g2.ReleaseHdc(dc2);//释放位图句柄
//image.Save("c:\\MyJpeg.Icon", ImageFormat.Bmp);
return image;
}
