C#
VB
C++
Defines an annotation picture along with its transparency information.
[SerializableAttribute()]
public class AnnPicture : ISerializable, IDisposable
<SerializableAttribute()>
Public Class AnnPicture
Implements System.ICloneable, System.IDisposable, System.Runtime.Serialization.ISerializable
[SerializableAttribute()]
public ref class AnnPicture : public System.ICloneable, System.IDisposable, System.Runtime.Serialization.ISerializable
This example creates an image that has a blue ellipse inside a red rectangle.
using Leadtools;
using Leadtools.Annotations;
using Leadtools.Codecs;
using Leadtools.WinForms;
private void AnnPicture_AnnPicture(Graphics graphics)
{
using (Bitmap btmp = new Bitmap(100, 100, PixelFormat.Format32bppArgb))
{
using (Graphics graphicsImage = Graphics.FromImage(btmp))
{
graphicsImage.FillRectangle(Brushes.Red, new Rectangle(0, 0, 100, 100));
graphicsImage.FillEllipse(Brushes.Blue, new Rectangle(0, 0, 100, 100));
graphicsImage.Dispose();
}
// initialize a new AnnPicture class for this image
AnnPicture pic = new AnnPicture(btmp);
// draw the picture with no transparency
Rectangle rc = new Rectangle(10, 10, pic.Image.Width, pic.Image.Height);
ImageAttributes ia = pic.ImageAttributes;
if (ia != null)
{
graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);
ia.Dispose();
}
else
{
if (rc.Width > 1 && rc.Height > 1)
graphics.DrawImage(pic.Image, rc);
}
// draw the picture without the ellipse (make transparent color = blue)
rc.Offset(0, pic.Image.Height + 10);
pic.TransparentMode = AnnPictureTransparentMode.UseColor;
pic.TransparentColor = Color.Blue;
ia = pic.ImageAttributes;
if (ia != null)
{
graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);
ia.Dispose();
}
else
{
if (rc.Width > 1 && rc.Height > 1)
graphics.DrawImage(pic.Image, rc);
}
// draw the picture without the rectangle (use the top left pixel as the transparent color)
rc.Offset(0, pic.Image.Height + 10);
pic.TransparentMode = AnnPictureTransparentMode.TopLeftPixel;
ia = pic.ImageAttributes;
if (ia != null)
{
graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);
ia.Dispose();
}
else
{
if (rc.Width > 1 && rc.Height > 1)
graphics.DrawImage(pic.Image, rc);
}
}
}
Imports Leadtools
Imports Leadtools.Annotations
Imports Leadtools.Codecs
Imports Leadtools.WinForms
Private Sub AnnPicture_AnnPicture(ByVal g As Graphics)
Dim btmp As Bitmap = New Bitmap(100, 100, PixelFormat.Format32bppArgb)
Try
Dim graphicsImage As Graphics = Graphics.FromImage(btmp)
Try
graphicsImage.FillRectangle(Brushes.Red, New Rectangle(0, 0, 100, 100))
graphicsImage.FillEllipse(Brushes.Blue, New Rectangle(0, 0, 100, 100))
graphicsImage.Dispose()
Finally
CType(graphicsImage, IDisposable).Dispose()
End Try
' initialize a new AnnPicture class for this image
Dim pic As AnnPicture = New AnnPicture(btmp)
' draw the picture with no transparency
Dim rc As Rectangle = New Rectangle(10, 10, pic.Image.Width, pic.Image.Height)
Dim ia As ImageAttributes = pic.ImageAttributes
If Not ia Is Nothing Then
g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)
ia.Dispose()
Else
If rc.Width > 1 AndAlso rc.Height > 1 Then
g.DrawImage(pic.Image, rc)
End If
End If
' draw the picture without the ellipse (make transparent color = blue)
rc.Offset(0, pic.Image.Height + 10)
pic.TransparentMode = AnnPictureTransparentMode.UseColor
pic.TransparentColor = Color.Blue
ia = pic.ImageAttributes
If Not ia Is Nothing Then
g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)
ia.Dispose()
Else
If rc.Width > 1 AndAlso rc.Height > 1 Then
g.DrawImage(pic.Image, rc)
End If
End If
' draw the picture without the rectangle (use the top left pixel as the transparent color)
rc.Offset(0, pic.Image.Height + 10)
pic.TransparentMode = AnnPictureTransparentMode.TopLeftPixel
ia = pic.ImageAttributes
If Not ia Is Nothing Then
g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)
ia.Dispose()
Else
If rc.Width > 1 AndAlso rc.Height > 1 Then
g.DrawImage(pic.Image, rc)
End If
End If
Finally
CType(btmp, IDisposable).Dispose()
End Try
End Sub
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