OmrFormField Class

A single rectangular region on a form that defines an OMR (optical mark) area on a blank (not filled-in) form so that an OMR reading process can be performed on the filled form during form processing.

Object Model

Syntax

C#
Visual Basic
Objective-C
Java
C++

[SerializableAttribute()]
public class OmrFormField : OcrFormField

'Declaration
 
<SerializableAttribute()>
Public Class OmrFormField 
   Inherits OcrFormField

'Usage
 
Dim instance As OmrFormField

[SerializableAttribute()]
public ref class OmrFormField : public OcrFormField

Remarks

Fields are defined for each page in the processing engine. All fields require you fill in the Property specifying where the field is located, and a Name Property.

Fields can be added or retrieved through the FormProcessingEngine.Pages property. Once fields are defined, they can be loaded/saved from disk using the FormProcessingEngine.LoadFields and FormProcessingEngine.SaveFields methods, allowing you to define MasterForm fields just once and save them to disk. LEADTOOLS supports TextFormField, OmrFormField, BarcodeFormField, ImageFormField, and custom user-defined fields derived from FormField. When obtaining processing results, you should check for the type of each field, and cast it to the appropriate type in order to obtain the field specific results (barcode, image, etc).

Example

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Barcode
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Forms.Ocr
Imports Leadtools.Forms.Processing
Imports Leadtools.Forms.Recognition
Imports Leadtools.Forms.Recognition.Barcode
Imports Leadtools.Forms.Recognition.Ocr

'''This example shows how to create an OmrFormField.
Public Sub AddOmrFormField(ByVal processingEngine As FormProcessingEngine)
   'Create a new page for the form. 
   Dim formPage As FormPage = New FormPage(1, 150, 150)
   Dim omrField As OmrFormField = New OmrFormField()
   omrField.Name = "Single"
   omrField.Bounds = New LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel)
   formPage.Add(omrField)
   'Add the page to the engine 
   processingEngine.Pages.Add(formPage)
End Sub

using Leadtools;
using Leadtools.Barcode;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Forms.Ocr;
using Leadtools.Forms.Processing;
using Leadtools.Forms.Recognition;
using Leadtools.Forms.Recognition.Barcode;
using Leadtools.Forms.Recognition.Ocr;

///This example shows how to create an OmrFormField.
public void AddOmrFormField(FormProcessingEngine processingEngine)
{
   //Create a new page for the form. 
   FormPage formPage = new FormPage(1, 150, 150);
   OmrFormField omrField = new OmrFormField();
   omrField.Name = "Single";
   omrField.Bounds = new LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel);
   formPage.Add(omrField);
   //Add the page to the engine 
   processingEngine.Pages.Add(formPage);
}

Requirements

Target Platforms

Reference

OmrFormField Members
Leadtools.Forms.Processing Namespace