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CreateFromCenter Property
See Also 
Leadtools.MedicalViewer Namespace > MedicalViewerBaseCell Class : CreateFromCenter Property



Gets or sets the value that determines whether to draw the annotation object from the center outward, or from edge to edge.

Syntax

Visual Basic (Declaration) 
Public Property CreateFromCenter As Boolean
Visual Basic (Usage)Copy Code
Dim instance As MedicalViewerBaseCell
Dim value As Boolean
 
instance.CreateFromCenter = value
 
value = instance.CreateFromCenter
C# 
public bool CreateFromCenter {get; set;}
C++/CLI 
public:
property bool CreateFromCenter {
   bool get();
   void set (    bool value);
}

Property Value

true to draw the annotation object from the center, false to draw from the edge.

Example

Visual BasicCopy Code
Private Class MedicalViewerCreateFromCenterForm : 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)

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

         ' assign the added actions to a mouse button, meaning that when the user click and drag the mouse button, the associated action will be activated.
         cell.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)
         cell.SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)
         cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)

         _medicalViewer.Cells.Add(cell)

         ' adjust some properties to 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 action that will be used to change the properties of the images inside the control.
         _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.WindowLevel)
         _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.Alpha)
         _medicalViewer.Cells(1).AddAction(MedicalViewerActionType.Offset)

         ' assign the added actions to a mouse button, meaning that when the user click and drag the mouse button, the associated action will be activated.
         _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)
         _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)
         _medicalViewer.Cells(1).SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active Or MedicalViewerActionFlags.RealTime)

         ' adjust some properties to 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 GetMedicalControlForCreateFromCenterExample() As MedicalViewerForm13
      Return New MedicalViewerForm13()
   End Function


   Public Sub MedicalViewerCreateFromCenterExample()
      Dim myForm As MedicalViewerForm13 = GetMedicalControlForCreateFromCenterExample()
      Dim medicalViewer As MedicalViewer = myForm.Viewer
      Dim cell As MedicalViewerMultiCell = CType(medicalViewer.Cells(0), MedicalViewerMultiCell)


      ' This feature allows the user to create the object from the center.
      cell.CreateFromCenter = True
      cell.AddAction(MedicalViewerActionType.AnnotationButton)
      cell.SetAction(MedicalViewerActionType.AnnotationButton, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)

      MessageBox.Show("Create a button annotation by clicking and dragging the mouse button")

      myForm.ShowDialog()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
class MedicalViewerCreateFromCenterForm : Form
     {
        private MedicalViewer _medicalViewer;
        void MedicalViewerForm_SizeChanged(object sender, EventArgs e)
        {
           _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
        }

        public MedicalViewerCreateFromCenterForm()
        {
           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 some action that will be used to change the properties of the images inside the control.
           cell.AddAction(MedicalViewerActionType.WindowLevel);
           cell.AddAction(MedicalViewerActionType.Alpha);
           cell.AddAction(MedicalViewerActionType.Offset);

           // assign the added actions to a mouse button, meaning that when the user click and drag the mouse button, the associated action will be activated.
           cell.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);
           cell.SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);
           cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);

           _medicalViewer.Cells.Add(cell);

           // adjust some properties to 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 action that will be used to change the properties of the images inside the control.
           _medicalViewer.Cells[1].AddAction(MedicalViewerActionType.WindowLevel);
           _medicalViewer.Cells[1].AddAction(MedicalViewerActionType.Alpha);
           _medicalViewer.Cells[1].AddAction(MedicalViewerActionType.Offset);

           // assign the added actions to a mouse button, meaning that when the user click and drag the mouse button, the associated action will be activated.
           _medicalViewer.Cells[1].SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);
           _medicalViewer.Cells[1].SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);
           _medicalViewer.Cells[1].SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active | MedicalViewerActionFlags.RealTime);

           // adjust some properties to 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;
        }
        public MedicalViewer Viewer
        {
           get { return _medicalViewer; }
        }
     }
     MedicalViewerForm13 GetMedicalControlForCreateFromCenterExample()
     {
        return new MedicalViewerForm13();
     }


     public void MedicalViewerCreateFromCenterExample()
     {
        MedicalViewerForm13 myForm = GetMedicalControlForCreateFromCenterExample();
        MedicalViewer medicalViewer = myForm.Viewer;
        MedicalViewerMultiCell cell = (MedicalViewerMultiCell)(medicalViewer.Cells[0]);


        // This feature allows the user to create the object from the center.
        cell.CreateFromCenter = true;
        cell.AddAction(MedicalViewerActionType.AnnotationButton);
        cell.SetAction(MedicalViewerActionType.AnnotationButton, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active);

        MessageBox.Show("Create a button annotation by clicking and dragging the mouse button");

        myForm.ShowDialog();
     }

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

Remarks

This prpoerty works only with symetrical objects (like button, rectangle, ellipse, etc.).

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also

Leadtools.MedicalViewer requires a Medical Imaging license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features