Implementing a Non Automated Annotation Program

Take the following steps to create and run a program that implements non-automated annotations:

Start Visual Studio.
Choose File->New->Project… from the menu.
In the New Project dialog box, choose either "Visual C# Projects" or "VB Projects" in the Projects Type List, and choose "Windows Forms Application" in the Templates List.
Type the project name as "Implementing Non-Automated Annotations" in the Name field, and then click OK. If desired, type a new location for your project or select a directory using the Browse button, and then click OK.
In the "Solution Explorer" window, right-click the "References" folder, and choose "Add Reference…" from the context menu. In the "Add Reference" dialog box, select the ".NET" tab and browse to Leadtools For .NET "<LEADTOOLS_INSTALLDIR>\Bin\DotNet4\Win32" folder and select the following DLLs:
- Leadtools.dll
- Leadtools.Annotations.Engine.dll
- Leadtools.Annotations.Rendering.WinForms.dll
- Leadtools.Codecs.dll
- Leadtools.Codecs.Cmp.dll
- Leadtools.Controls.WinForms.dll
Click Add and then click OK to add the above DLLs to the application.
Make sure Form1 is in design view. Go to the toolbox (View->Toolbox) and Drag and drop an instance of the ImageViewer control onto the form. If you do not have the ImageViewer in your toolbox, choose Tools->Choose Toolbox Items from the menu. Click Browse and then select the Leadtools.Controls.WinForms.DLL from the "<LEADTOOLS_INSTALLDIR>\Bin\DotNet4\Win32" directory. Next, click Open and then click OK.
Change the following properties:

Property Value

Dock Fill

Switch to Form1 code view (right-click Form1 in the Solution Explorer and then select View Code) and add the following lines at the beginning of the file:

Imports Leadtools 
Imports Leadtools.Annotations.Engine 
Imports Leadtools.Annotations.Rendering 
Imports Leadtools.Codecs 
Imports Leadtools.Controls.WinForms

using Leadtools; 
using Leadtools.Annotations.Engine; 
using Leadtools.Annotations.Rendering; 
using Leadtools.Codecs; 
using Leadtools.Controls.WinForms;

Declare the following private variable:

' Annotation container object 
Private annContainerObj As AnnContainer 
' Annotation Rendering Engine 
private renderingEngine As AnnWinFormsRenderingEngine

// Annotation container object 
private AnnContainer annContainerObj; 
// Annotation Rendering Engine 
private AnnWinFormsRenderingEngine renderingEngine;

Add an event handler to the Form1 Load event and code it as follows:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
   ' initialize a new RasterCodecs object 
   Dim codecs As New RasterCodecs() 
   ' load the main image into our viewer 
   RasterImageViewer1.Image = codecs.Load("C:\Users\Public\Documents\LEADTOOLS Images\Sample1.cmp") 
   RasterImageViewer1.Zoom(ControlSizeMode.Fit, RasterImageViewer1.ScaleFactor, RasterImageViewer1.DefaultZoomOrigin) 
                    
   If (Not IsNothing(RasterImageViewer1.Image)) Then 
      ' initialize the AnnContainer object and associate it with RasterImageViewer1 image 
      annContainerObj = New AnnContainer 
                       
      ' create Annotation Note Object and add it to the container 
      annContainerObj.Children.Add(CreateAnnNoteObject(New LeadRectD(10, 10, 500, 500))) 
                       
      ' initialize the RenderingEngine 
      renderingEngine = New AnnWinFormsRenderingEngine() 
   End If 
End Sub

private void Form1_Load(object sender, System.EventArgs e) 
{ 
   // initialize a new RasterCodecs object 
   RasterCodecs codecs = new RasterCodecs(); 
   // load the main image into our viewer 
   rasterImageViewer1.Image = codecs.Load(@"C:\Users\Public\Documents\LEADTOOLS Images\Sample1.cmp"); 
   rasterImageViewer1.Zoom(ControlSizeMode.Fit, rasterImageViewer1.ScaleFactor, rasterImageViewer1.DefaultZoomOrigin); 
                    
   if(rasterImageViewer1.Image != null) 
   { 
      // initialize the AnnContainer object and associate it with the rasterImageViewer1 image 
     annContainerObj = new AnnContainer(); 
     // create an Annotation Note object and add it to the container 
     annContainerObj.Children.Add(CreateAnnNoteObject(new LeadRectD(10, 10, 500, 500))); 
                      
     // initialize the RenderingEngine 
     renderingEngine = new AnnWinFormsRenderingEngine(); 
   } 
}

Add an event handler to the rasterImageViewer1 PostImagePaint event and code it as follows:

Private Sub RasterImageViewer1_PostImagePaint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) _ 
Handles RasterImageViewer1.PostImagePaint 
   If (Not IsNothing(annContainerObj)) Then 
      renderingEngine.Attach(annContainerObj, e.Graphics) 
      renderingEngine.Render(LeadRectD.Empty, true) 
      renderingEngine.Detach() 
   End If 
End Sub

private void rasterImageViewer1_PostImagePaint(object sender, System.Windows.Forms.PaintEventArgs e) 
{ 
   if (annContainerObj != null) 
   { 
     renderingEngine.Attach(annContainerObj, e.Graphics); 
     renderingEngine.Render(LeadRectD.Empty, true); 
     renderingEngine.Detach(); 
  } 
}

Add the CreateAnnNoteObject function code to class Form1:

Private Function CreateAnnNoteObject(ByVal boundingRect As LeadRectD) As AnnObject 
   Dim annNoteObj As AnnNoteObject = New AnnNoteObject 
   annNoteObj.Text = "This is my Text" 
   annNoteObj.Font = New AnnFont("Arial", 14) 
   annNoteObj.Hyperlink = "Notepad.exe" 
   annNoteObj.Rect = boundingRect 
   Return annNoteObj 
End Function

private AnnObject CreateAnnNoteObject(LeadRectD boundingRect) 
{ 
   AnnNoteObject annNoteObj = new AnnNoteObject(); 
   annNoteObj.Text = "This is my Text"; 
   annNoteObj.Font = new AnnFont("Arial", 14); 
   annNoteObj.Hyperlink = "Notepad.exe"; 
   annNoteObj.Rect = boundingRect; 
   return annNoteObj; 
}