InitFromStream(Stream) Method
Initializes the current AnnotationManager object from an instantiated Stream object according to what you have specified. The document previously handled by this AnnotationManager object will automatically close.
All document formats currently supported by the toolkit are listed here.
Be aware that the AnnotationManager object only handles GdPicture/XMP annotations contained in the source document.
'Declaration
Public Overloads Function InitFromStream( _
ByVal As Stream _
) As GdPictureStatus
Parameters
- Stream
- A System.IO.Stream object. This object must be properly initialized before it can be sent into this method and it must be disposed of by the user as well.
Return Value
A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.
We strongly recommend always checking this status first.
How to initialize the AnnotationManager object from a JPG file using a stream.
Dim annotationManager As AnnotationManager = New AnnotationManager()
Dim file As System.IO.Stream = New System.IO.FileStream("image.jpg", System.IO.FileMode.Open)
If (annotationManager.InitFromStream(file) = GdPictureStatus.OK) AndAlso
(annotationManager.PageCount > 0) AndAlso (annotationManager.SelectPage(1) = GdPictureStatus.OK) Then
Dim stamp As GdPicture14.Annotations.AnnotationRubberStamp = annotationManager.AddRubberStampAnnot(Color.Red, 0.5F, 0.5F, 2, 1, "APPROVED")
If stamp IsNot Nothing Then
stamp.Rotation = 20
If (annotationManager.SaveAnnotationsToPage() = GdPictureStatus.OK) AndAlso
(annotationManager.BurnAnnotationsToPage(True) = GdPictureStatus.OK) AndAlso
(annotationManager.SaveDocumentToPDF("approved.pdf") = GdPictureStatus.OK) Then
MessageBox.Show("Finished successfully!", "AnnotationManager.InitFromStream")
Else
MessageBox.Show("The file can't be saved. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")
End If
stamp.Dispose()
Else
MessageBox.Show("The rubber stamp annotation can't be created. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")
End If
annotationManager.Close()
Else
MessageBox.Show("The AnnotationManager can't be properly initialized. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")
End If
annotationManager.Dispose()
file.Dispose()
AnnotationManager annotationManager = new AnnotationManager();
System.IO.Stream file = new System.IO.FileStream("image.jpg", System.IO.FileMode.Open);
if ((annotationManager.InitFromStream(file) == GdPictureStatus.OK) &&
(annotationManager.PageCount > 0) && (annotationManager.SelectPage(1) == GdPictureStatus.OK))
{
GdPicture14.Annotations.AnnotationRubberStamp stamp = annotationManager.AddRubberStampAnnot(Color.Red, 0.5f, 0.5f, 2, 1, "APPROVED");
if (stamp != null)
{
stamp.Rotation = 20;
if ((annotationManager.SaveAnnotationsToPage() == GdPictureStatus.OK) &&
(annotationManager.BurnAnnotationsToPage(true) == GdPictureStatus.OK) &&
(annotationManager.SaveDocumentToPDF("approved.pdf") == GdPictureStatus.OK))
MessageBox.Show("Finished successfully!", "AnnotationManager.InitFromStream");
else
MessageBox.Show("The file can't be saved. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");
stamp.Dispose();
}
else
MessageBox.Show("The rubber stamp annotation can't be created. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");
annotationManager.Close();
}
else
MessageBox.Show("The AnnotationManager can't be properly initialized. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");
annotationManager.Dispose();
file.Dispose();
