StartDrawingAnnotation Event

Summary

Optional delegate method for additional processing.

Syntax
C#
VB
C++
public event EventHandler<MedicalViewerDrawingAnnotationsEventArgs> StartDrawingAnnotation 
  
Public Event StartDrawingAnnotation As EventHandler(Of MedicalViewerDrawingAnnotationsEventArgs) 
            public: 
event EventHandler<MedicalViewerDrawingAnnotationsEventArgs^>^ StartDrawingAnnotation 

Event Data

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

PropertyDescription
Container Gets the annotation container that contains the annotation object to be created.
Object Gets the object that is being created.
SubCellIndex Gets the sub-cell index of the cell that contains the container of the object that is being created.
Type Gets the enumeration value that determines the type of the object being created.

Example
C#
VB
using Leadtools; 
using Leadtools.Dicom; 
using Leadtools.Medical3D; 
using Leadtools.Codecs; 
using Leadtools.MedicalViewer; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Annotations.Engine; 
using Leadtools.Annotations.Designers; 
 
// This example makes the color of each newly created object blue. 
class MedicalViewerStartDrawingAnnotationForm : Form 
{ 
   private MedicalViewer _medicalViewer; 
   private RasterImage _image; 
 
 
   void MedicalViewerLocalizer_SizeChanged(object sender, EventArgs e) 
   { 
      _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom); 
   } 
 
   public MedicalViewerStartDrawingAnnotationForm() 
   { 
      DicomEngine.Startup(); 
      RasterCodecs _codecs = new RasterCodecs(); 
 
      this.SizeChanged += new EventHandler(MedicalViewerLocalizer_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); 
      _medicalViewer.Cells.Add(cell); 
      cell.StartDrawingAnnotation += new EventHandler<MedicalViewerDrawingAnnotationsEventArgs>(cell_StartDrawingAnnotation); 
 
      cell.AddAction(MedicalViewerActionType.AnnotationRectangle); 
      cell.AddAction(MedicalViewerActionType.Alpha); 
      cell.AddAction(MedicalViewerActionType.Offset); 
 
      // 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.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active); 
      cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active); 
 
      Controls.Add(_medicalViewer); 
      _medicalViewer.Dock = DockStyle.Fill; 
      DicomEngine.Shutdown(); 
   } 
 
   void cell_StartDrawingAnnotation(object sender, MedicalViewerDrawingAnnotationsEventArgs e) 
   { 
      e.Object.Fill = AnnSolidColorBrush.Create(Color.Red.Name); 
   } 
 
   void MedicalViewerLocalizer_FormClosing(object sender, FormClosingEventArgs e) 
   { 
   } 
 
   public MedicalViewer Viewer 
   { 
      get { return _medicalViewer; } 
   } 
} 
 
MedicalViewerStartDrawingAnnotationForm GetMedicalViewerStartDrawingAnnotationForm() 
{ 
   MedicalViewerSeriesManagerFrom form = new MedicalViewerSeriesManagerFrom(); 
   return new MedicalViewerStartDrawingAnnotationForm(); 
} 
 
// This example changes the default window level value by decrease the width by 100. Then resets the images based on the new value. 
public void MedicalViewerStartDrawingAnnotationExample() 
{ 
   MedicalViewerStartDrawingAnnotationForm myForm = GetMedicalViewerStartDrawingAnnotationForm(); 
   MedicalViewer medicalViewer = myForm.Viewer; 
 
   myForm.ShowDialog(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Dicom 
Imports Leadtools.Medical3D 
Imports Leadtools.Codecs 
Imports Leadtools.MedicalViewer 
Imports Leadtools.Annotations.Engine 
Imports Leadtools.Annotations.Designers 
Imports Leadtools.ImageProcessing.Core 
 
' This example makes the color of each newly created object blue. 
Private Class MedicalViewerStartDrawingAnnotationForm : Inherits Form 
   Private _medicalViewer As MedicalViewer 
   Private _image As RasterImage 
 
 
   Private Sub MedicalViewer_SizeChanged(ByVal sender As Object, ByVal e As EventArgs) 
      _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom) 
   End Sub 
 
   Public Sub New() 
      DicomEngine.Startup() 
      Dim _codecs As RasterCodecs = New RasterCodecs() 
 
      AddHandler SizeChanged, AddressOf MedicalViewer_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) 
      AddHandler cell.StartDrawingAnnotation, AddressOf cell_StartDrawingAnnotation 
 
      cell.AddAction(MedicalViewerActionType.AnnotationRectangle) 
      cell.AddAction(MedicalViewerActionType.Alpha) 
      cell.AddAction(MedicalViewerActionType.Offset) 
 
      ' 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.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active) 
      cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active) 
 
      Controls.Add(_medicalViewer) 
      _medicalViewer.Dock = DockStyle.Fill 
      DicomEngine.Shutdown() 
   End Sub 
 
   Private Sub cell_StartDrawingAnnotation(ByVal sender As Object, ByVal e As MedicalViewerDrawingAnnotationsEventArgs) 
      e.Object.Fill = AnnSolidColorBrush.Create(Color.Red.Name) 
   End Sub 
 
   Private Sub MedicalViewerLocalizer_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) 
   End Sub 
 
   Public ReadOnly Property Viewer() As MedicalViewer 
      Get 
         Return _medicalViewer 
      End Get 
   End Property 
End Class 
 
Private Function GetMedicalViewerStartDrawingAnnotationForm() As MedicalViewerStartDrawingAnnotationForm 
   Dim form As MedicalViewerSeriesManagerFrom = New MedicalViewerSeriesManagerFrom() 
   Return New MedicalViewerStartDrawingAnnotationForm() 
End Function 
 
' This example changes the default window level value by decrease the width by 100. Then resets the images based on the new value. 
<TestMethod()> _ 
Public Sub MedicalViewerStartDrawingAnnotationExample() 
   Dim myForm As MedicalViewerStartDrawingAnnotationForm = GetMedicalViewerStartDrawingAnnotationForm() 
   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 

Requirements

Target Platforms

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Leadtools.MedicalViewer Assembly