ChangingWindowLevel Event

Optional delegate method for additional processing.

Syntax

C#
Visual Basic
Objective-C
Java
C++

public event EventHandler<MedicalViewerChangingWindowLevelEventArgs> ChangingWindowLevel

'Declaration
 
Public Event ChangingWindowLevel As EventHandler(Of MedicalViewerChangingWindowLevelEventArgs)

'Usage
 
Dim instance As MedicalViewerBaseCell
Dim handler As EventHandler(Of MedicalViewerChangingWindowLevelEventArgs)
 
AddHandler instance.ChangingWindowLevel, handler

public:
event EventHandler<MedicalViewerChangingWindowLevelEventArgs^>^ ChangingWindowLevel

Event Data

The event handler receives an argument of type MedicalViewerChangingWindowLevelEventArgs containing data related to this event. The following MedicalViewerChangingWindowLevelEventArgs properties provide information specific to this event.

Property	Description
Center	Gets the value that indicates the new window center.
OldCenter	Gets the value that indicates the previous window center.
OldWidth	Gets the value that indicates the previous window width.
SubCellIndex	Gets the value that indicates the index of sub-cell that contains the image which to be affected by the window level action.
Width	Gets the value that indicates the new window width.

Example

      Imports Leadtools
      Imports Leadtools.Codecs
      Imports Leadtools.MedicalViewer

      Private Class MedicalViewerForm
         Inherits Form
         Private _medicalViewer As MedicalViewer
         Public Sub New()
            Dim _codecs As 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 New MedicalViewerMultiCell(_image, True, 1, 1)

            ' add window level action that will be used to change the properties of the images inside the control.
            cell.AddAction(MedicalViewerActionType.WindowLevel)

                ' 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.WindowLevel, MedicalViewerMouseButtons.Left, 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)

            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

      ' When the user uses the window level tool, this example displays the previous and new window level values.

      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.ChangingWindowLevel, AddressOf medicalViewer_ChangingWindowLevel
         myForm.ShowDialog()
      End Sub

      Private Sub medicalViewer_ChangingWindowLevel(ByVal sender As Object, ByVal e As Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs)
         Dim msg As String = String.Format(Constants.vbLf & "Sub Cell Index: {0}" & "Previous Window Center: {1}" & Constants.vbLf & "Previous Window Width: {2}" & Constants.vbLf & "New Window Center: {3}" & Constants.vbLf & "New Window Width{4}", e.SubCellIndex, e.OldCenter, e.OldWidth, e.Center, e.Width)
         Console.WriteLine(msg)
      End Sub

      Public NotInheritable Class LEAD_VARS
      Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
      End Class
      using Leadtools;
      using Leadtools.Codecs;
      using Leadtools.MedicalViewer;

      class MedicalViewerForm : Form
      {
         private MedicalViewer _medicalViewer;
         public MedicalViewerForm()
         {
            RasterCodecs _codecs = new RasterCodecs();
            RasterImage _image;

            this.SizeChanged += new EventHandler(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(this.ClientRectangle.Right, this.ClientRectangle.Bottom);

            // Load an image and then add it to the control.
            _image = _codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"xa.dcm"));
            MedicalViewerMultiCell cell = new MedicalViewerMultiCell(_image, true, 1, 1);

            // add window level action that will be used to change the properties of the images inside the control.
            cell.AddAction(MedicalViewerActionType.WindowLevel);

            // 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.WindowLevel, MedicalViewerMouseButtons.Left, 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);

            Controls.Add(_medicalViewer);
            _medicalViewer.Dock = DockStyle.Fill;
         }

         void MedicalViewerForm_SizeChanged(object sender, EventArgs e)
         {
            _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
         }
         public MedicalViewer Viewer
         {
            get { return _medicalViewer; }
         }
      }

      MedicalViewerForm GetMedicalControl()
      {
         return new MedicalViewerForm();
      }

      // When the user uses the window level tool, this example displays the previous and new window level values.

      public void MedicalViewerAnnotationCreatedExample()
      {
         MedicalViewerForm myForm = GetMedicalControl();
         MedicalViewer medicalViewer = myForm.Viewer;
         MedicalViewerMultiCell cell = (MedicalViewerMultiCell)(medicalViewer.Cells[0]);

         cell.ChangingWindowLevel += new EventHandler<Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs>(medicalViewer_ChangingWindowLevel);
         myForm.ShowDialog();
      }

      void medicalViewer_ChangingWindowLevel(object sender, Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs e)
      {
         string msg = string.Format("\nSub Cell Index: {0}\nPrevious Window Center: {1}\nPrevious Window Width: {2}\nNew Window Center: {3}\nNew Window Width{4}",
            e.SubCellIndex,
            e.OldCenter,
            e.OldWidth,
            e.Center,
            e.Width);
         Console.WriteLine(msg);
      }

      static class LEAD_VARS
      {
      public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
      }

      Imports Leadtools
      Imports Leadtools.Codecs
      Imports Leadtools.MedicalViewer

      Private Class MedicalViewerForm
         Inherits Form
         Private _medicalViewer As MedicalViewer
         Public Sub New()
            Dim _codecs As 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 New MedicalViewerMultiCell(_image, True, 1, 1)

            ' add window level action that will be used to change the properties of the images inside the control.
            cell.AddAction(MedicalViewerActionType.WindowLevel)

                ' 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.WindowLevel, MedicalViewerMouseButtons.Left, 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)

            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

      ' When the user uses the window level tool, this example displays the previous and new window level values.

      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.ChangingWindowLevel, AddressOf medicalViewer_ChangingWindowLevel
         myForm.ShowDialog()
      End Sub

      Private Sub medicalViewer_ChangingWindowLevel(ByVal sender As Object, ByVal e As Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs)
         Dim msg As String = String.Format(Constants.vbLf & "Sub Cell Index: {0}" & "Previous Window Center: {1}" & Constants.vbLf & "Previous Window Width: {2}" & Constants.vbLf & "New Window Center: {3}" & Constants.vbLf & "New Window Width{4}", e.SubCellIndex, e.OldCenter, e.OldWidth, e.Center, e.Width)
         Console.WriteLine(msg)
      End Sub

      Public NotInheritable Class LEAD_VARS
      Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
      End Class
      using Leadtools;
      using Leadtools.Codecs;
      using Leadtools.MedicalViewer;

      class MedicalViewerForm : Form
      {
         private MedicalViewer _medicalViewer;
         public MedicalViewerForm()
         {
            RasterCodecs _codecs = new RasterCodecs();
            RasterImage _image;

            this.SizeChanged += new EventHandler(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(this.ClientRectangle.Right, this.ClientRectangle.Bottom);

            // Load an image and then add it to the control.
            _image = _codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"xa.dcm"));
            MedicalViewerMultiCell cell = new MedicalViewerMultiCell(_image, true, 1, 1);

            // add window level action that will be used to change the properties of the images inside the control.
            cell.AddAction(MedicalViewerActionType.WindowLevel);

            // 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.WindowLevel, MedicalViewerMouseButtons.Left, 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);

            Controls.Add(_medicalViewer);
            _medicalViewer.Dock = DockStyle.Fill;
         }

         void MedicalViewerForm_SizeChanged(object sender, EventArgs e)
         {
            _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
         }
         public MedicalViewer Viewer
         {
            get { return _medicalViewer; }
         }
      }

      MedicalViewerForm GetMedicalControl()
      {
         return new MedicalViewerForm();
      }

      // When the user uses the window level tool, this example displays the previous and new window level values.

      public void MedicalViewerAnnotationCreatedExample()
      {
         MedicalViewerForm myForm = GetMedicalControl();
         MedicalViewer medicalViewer = myForm.Viewer;
         MedicalViewerMultiCell cell = (MedicalViewerMultiCell)(medicalViewer.Cells[0]);

         cell.ChangingWindowLevel += new EventHandler<Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs>(medicalViewer_ChangingWindowLevel);
         myForm.ShowDialog();
      }

      void medicalViewer_ChangingWindowLevel(object sender, Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs e)
      {
         string msg = string.Format("\nSub Cell Index: {0}\nPrevious Window Center: {1}\nPrevious Window Width: {2}\nNew Window Center: {3}\nNew Window Width{4}",
            e.SubCellIndex,
            e.OldCenter,
            e.OldWidth,
            e.Center,
            e.Width);
         Console.WriteLine(msg);
      }

      static class LEAD_VARS
      {
      public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
      }

      using Leadtools;
      using Leadtools.Codecs;
      using Leadtools.MedicalViewer;

      class MedicalViewerForm : Form
      {
         private MedicalViewer _medicalViewer;
         public MedicalViewerForm()
         {
            RasterCodecs _codecs = new RasterCodecs();
            RasterImage _image;

            this.SizeChanged += new EventHandler(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(this.ClientRectangle.Right, this.ClientRectangle.Bottom);

            // Load an image and then add it to the control.
            _image = _codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"xa.dcm"));
            MedicalViewerMultiCell cell = new MedicalViewerMultiCell(_image, true, 1, 1);

            // add window level action that will be used to change the properties of the images inside the control.
            cell.AddAction(MedicalViewerActionType.WindowLevel);

            // 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.WindowLevel, MedicalViewerMouseButtons.Left, 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);

            Controls.Add(_medicalViewer);
            _medicalViewer.Dock = DockStyle.Fill;
         }

         void MedicalViewerForm_SizeChanged(object sender, EventArgs e)
         {
            _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
         }
         public MedicalViewer Viewer
         {
            get { return _medicalViewer; }
         }
      }

      MedicalViewerForm GetMedicalControl()
      {
         return new MedicalViewerForm();
      }

      // When the user uses the window level tool, this example displays the previous and new window level values.

      public void MedicalViewerAnnotationCreatedExample()
      {
         MedicalViewerForm myForm = GetMedicalControl();
         MedicalViewer medicalViewer = myForm.Viewer;
         MedicalViewerMultiCell cell = (MedicalViewerMultiCell)(medicalViewer.Cells[0]);

         cell.ChangingWindowLevel += new EventHandler<Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs>(medicalViewer_ChangingWindowLevel);
         myForm.ShowDialog();
      }

      void medicalViewer_ChangingWindowLevel(object sender, Leadtools.MedicalViewer.MedicalViewerChangingWindowLevelEventArgs e)
      {
         string msg = string.Format("\nSub Cell Index: {0}\nPrevious Window Center: {1}\nPrevious Window Width: {2}\nNew Window Center: {3}\nNew Window Width{4}",
            e.SubCellIndex,
            e.OldCenter,
            e.OldWidth,
            e.Center,
            e.Width);
         Console.WriteLine(msg);
      }

      static class LEAD_VARS
      {
      public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
      }

Requirements

Target Platforms

Reference

MedicalViewerBaseCell Class
MedicalViewerBaseCell Members