AnnotationCreated Event

'Declaration
 
Public Event AnnotationCreated As EventHandler(Of MedicalViewerAnnotationCreatedEventArgs)

Private Class MedicalViewerForm : Inherits Form
      Private _medicalViewer As MedicalViewer
      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, 0)
         _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom)

         ' 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)

             ' 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)

             _medicalViewer.Cells.Add(cell)

             ' 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)


         Controls.Add(_medicalViewer)
         _medicalViewer.Dock = DockStyle.Fill
      End Sub

      Private Sub MedicalViewerForm_SizeChanged(ByVal sender As Object, ByVal e As EventArgs)
         _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom)
      End Sub
      Public ReadOnly Property Viewer() As MedicalViewer
         Get
            Return _medicalViewer
         End Get
      End Property
   End Class

   Private Function GetMedicalControl() As MedicalViewerForm
      Return New MedicalViewerForm()
   End Function

   'This example converts the annotation object (rectangle, ellipse and hilite) into a region once the user draws them

   Public Sub MedicalViewerAnnotationCreatedExample()
      Dim myForm As MedicalViewerForm = GetMedicalControl()
      Dim medicalViewer As MedicalViewer = myForm.Viewer
      Dim cell As MedicalViewerMultiCell = CType(medicalViewer.Cells(0), MedicalViewerMultiCell)

      AddHandler cell.AnnotationCreated, AddressOf medicalViewer_AnnotationCreated
      myForm.ShowDialog()
   End Sub

   Private Sub medicalViewer_AnnotationCreated(ByVal sender As Object, ByVal e As MedicalViewerAnnotationCreatedEventArgs)
      Dim cell As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell)
      Dim attribute As MedicalViewerAnnotationAttributes = cell.GetSelectedAnnotationAttributes(e.SubCellIndex)
      Select Case attribute.Type
         Case MedicalViewerActionType.AnnotationRectangle, MedicalViewerActionType.AnnotationEllipse, MedicalViewerActionType.AnnotationHilite
            cell.ConvertAnnotationToRegion(RasterRegionCombineMode.Or, True)
      End Select
   End Sub

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