LoadAnnotations(Stream) Method

'Declaration
 
Public Overloads Sub LoadAnnotations( _
   ByVal stream As Stream _
) 

Private Class MedicalViewerForm16 : Inherits Form
         Private _medicalViewer As MedicalViewer
         Private LoadAnnotation As Button
         Private SaveAnnotation As Button
         Private Sub MedicalViewerForm_SizeChanged(ByVal sender As Object, ByVal e As EventArgs)
             _medicalViewer.Bounds = New Rectangle(0, 100, Me.ClientRectangle.Right, Me.ClientRectangle.Bottom - 100)
         End Sub


         Public Sub New()
             Dim _codecs As RasterCodecs = New RasterCodecs()
             Dim _image As RasterImage

             AddHandler SizeChanged, AddressOf MedicalViewerForm_SizeChanged

             ' Create the medical viewer and adjust the size and the location.
             _medicalViewer = New MedicalViewer(1, 2)
             _medicalViewer.Location = New Point(0, 100)
             _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom - 100)

             ' Load an image and then add it to the control.
             _image = _codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "xa.dcm"))
             Dim cell As MedicalViewerMultiCell = New MedicalViewerMultiCell(_image, True, 1, 1)
             _medicalViewer.Cells.Add(cell)

             ' add some actions that will be used to change the properties of the images inside the control.
             cell.AddAction(MedicalViewerActionType.AnnotationRectangle)
             cell.AddAction(MedicalViewerActionType.AnnotationEllipse)
             cell.AddAction(MedicalViewerActionType.AnnotationHilite)

             ' assign the added actions to a mouse button, meaning that when the user clicks and drags the mouse button, the associated action will be activated.
             cell.SetAction(MedicalViewerActionType.AnnotationRectangle, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)
             cell.SetAction(MedicalViewerActionType.AnnotationEllipse, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active)
             cell.SetAction(MedicalViewerActionType.AnnotationHilite, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active)

             ' adjust some properties of the cell and add some tags.
             _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.UserData, "EX. ID 230-36-5448")
             _medicalViewer.Cells(0).SetTag(4, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame)
             _medicalViewer.Cells(0).SetTag(6, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Scale)
             _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData)
             _medicalViewer.Cells(0).SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.FieldOfView)


             ' Load another image and then add it to the control.
             _image = _codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "mr.dcm"))
             _medicalViewer.Cells.Add(New MedicalViewerMultiCell(_image, True, 2, 2))

             ' add some actions that will be used to change the properties of the images inside the control.
             _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.AnnotationRectangle)
             _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.AnnotationEllipse)
             _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.AnnotationHilite)

             ' assign the added actions to a mouse button, meaning that when the user clicks and drags the mouse button, the associated action will be activated.
             _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.AnnotationRectangle, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)
             _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.AnnotationEllipse, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active)
             _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.AnnotationHilite, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active)

             ' adjust some properties of the cell and add some tags.
             _medicalViewer.Cells(1).SetTag(2, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.UserData, "EX. ID 230-36-5448")
             _medicalViewer.Cells(1).SetTag(4, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame)
             _medicalViewer.Cells(1).SetTag(6, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Scale)
             _medicalViewer.Cells(1).SetTag(2, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData)
             _medicalViewer.Cells(1).SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.FieldOfView)



             LoadAnnotation = New Button()
             LoadAnnotation.Bounds = New Rectangle(10, 10, 100, 30)
             LoadAnnotation.Text = "Load Annotation"
             AddHandler LoadAnnotation.Click, AddressOf LoadAnnotation_Click

             SaveAnnotation = New Button()
             SaveAnnotation.Bounds = New Rectangle(110, 10, 100, 30)
             SaveAnnotation.Text = "Save Annotation"
             AddHandler SaveAnnotation.Click, AddressOf SaveAnnotation_Click

             Controls.AddRange(New Control() {_medicalViewer, LoadAnnotation, SaveAnnotation})

         End Sub

         Public ReadOnly Property Viewer() As MedicalViewer
             Get
                 Return _medicalViewer
             End Get
         End Property

         Private Function GetFileStream() As FileStream
             Dim fs As FileStream
             If File.Exists(Path.Combine(LEAD_VARS.ImagesDir, "SavedAnnotation.ann")) Then
                 fs = New FileStream(Path.Combine(LEAD_VARS.ImagesDir, "SavedAnnotation.ann"), FileMode.Open)
             Else
                 fs = File.Create(Path.Combine(LEAD_VARS.ImagesDir, "SavedAnnotation.ann"))
             End If

             Return fs
         End Function

         Private Sub SaveAnnotation_Click(ByVal sender As Object, ByVal e As EventArgs)
             Dim fs As FileStream = GetFileStream()
             Dim cell As MedicalViewerMultiCell = CType(_medicalViewer.Cells(0), MedicalViewerMultiCell)

             cell.SaveAnnotations(fs, 0)
             fs.Close()
         End Sub

         Private Sub LoadAnnotation_Click(ByVal sender As Object, ByVal e As EventArgs)
             Dim fs As FileStream = GetFileStream()
             Dim cell As MedicalViewerMultiCell = CType(_medicalViewer.Cells(0), MedicalViewerMultiCell)

             cell.LoadAnnotations(fs, 0)
             fs.Close()
         End Sub
     End Class


     Private Function GetMedicalControl16() As MedicalViewerForm16
         Return New MedicalViewerForm16()
     End Function

     ' This example copied the annotation container of the sub-cell when user right clicks on it, and paste the annotation container on the sub-cell that the user click on it using the left mouse button.

     Public Sub MedicalViewerSaveAnnotationStreamExample()
         Dim myForm As MedicalViewerForm16 = GetMedicalControl16()
         Dim medicalViewer As MedicalViewer = myForm.Viewer

         myForm.ShowDialog()
     End Sub


Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class