AnnotationClicked Event

'Declaration
 
Public Event AnnotationClicked As EventHandler(Of MedicalViewerAnnotationClickedEventArgs)

Private Class MedicalViewerForm : Inherits Form
      Private _medicalViewer As MedicalViewer
      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 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)

         _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)


         Controls.Add(_medicalViewer)
         _medicalViewer.Dock = DockStyle.Fill
      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 will convert the rectangle, ellipse or hilite annotation into region once the user clicks on them.

   Public Sub MedicalViewerAnnotationClickedExample()
      Dim myForm As MedicalViewerForm = GetMedicalControl()
      Dim medicalViewer As MedicalViewer = myForm.Viewer

      Dim cell As MedicalViewerMultiCell = CType(medicalViewer.Cells(0), MedicalViewerMultiCell)
      AddHandler cell.AnnotationClicked, AddressOf medicalViewer_AnnotationClicked
      myForm.ShowDialog()
   End Sub

   Private Sub medicalViewer_AnnotationClicked(ByVal sender As Object, ByVal e As MedicalViewerAnnotationClickedEventArgs)
      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