LEADTOOLS OCR (Leadtools.Forms.Ocr assembly)
LEAD Technologies, Inc

InsertPages(Int32,RasterImage,Int32,Int32,OcrProgressCallback) Method






The zero-based index at which the new pages from image should be inserted.
The Leadtools.RasterImage object containing the pages to insert.
1-based index of the first page in image to insert.
1-based index of the last page in image to add. A value of -1 means add up to and including the last page in image.
Optional callback to show operation progress.
Insert one or more pages from a multi-page Leadtools.RasterImage object at the specified location. .NET support
Syntax
'Declaration
 
Overloads Sub InsertPages( _
   ByVal pageIndex As Integer, _
   ByVal image As RasterImage, _
   ByVal imageFirstPageNumber As Integer, _
   ByVal imageLastPageNumber As Integer, _
   ByVal callback As OcrProgressCallback _
) 
'Usage
 
Dim instance As IOcrPageCollection
Dim pageIndex As Integer
Dim image As RasterImage
Dim imageFirstPageNumber As Integer
Dim imageLastPageNumber As Integer
Dim callback As OcrProgressCallback
 
instance.InsertPages(pageIndex, image, imageFirstPageNumber, imageLastPageNumber, callback)
function Leadtools.Forms.Ocr.IOcrPageCollection.InsertPages(Int32,RasterImage,Int32,Int32,OcrProgressCallback)( 
   pageIndex ,
   image ,
   imageFirstPageNumber ,
   imageLastPageNumber ,
   callback 
)

Parameters

pageIndex
The zero-based index at which the new pages from image should be inserted.
image
The Leadtools.RasterImage object containing the pages to insert.
imageFirstPageNumber
1-based index of the first page in image to insert.
imageLastPageNumber
1-based index of the last page in image to add. A value of -1 means add up to and including the last page in image.
callback
Optional callback to show operation progress.
Remarks

This method copies the Leadtools.RasterImage object image data into the newly created IOcrPage. Therefore, after this method returns, there is no relationship between image and the IOcrPage inside the OCR document. For example, if you do not need the image object after calling this method, you should dispose it after this method returns.

This method gurantees that no changes will be made to image.

A short-cut to insert all the pages of a Leadtools.RasterImage object to the OCR document is InsertPages(index, image, 1, -1, callback).

To insert a single page from a Leadtools.RasterImage object, you can use InsertPage(int pageIndex, RasterImage image, OcrProgressCallback callback).

You can use the OcrProgressCallback to show the operation progress or to abort it. For more information and an example, refer to OcrProgressCallback.

The LEADTOOLS OCR engine supports pages of dots per inch (DPI) values of 150 and greater. If you try to add a page with a DPI of less than 150 then the engine might be able to recognize any data from this page.

Note, the LEADTOOLS Plus OCR engine does not support image size greater than A3 paper size (11.7 by 16.5 inches at 300 dpi). Attempting to add an image that has a size greater than A3 will result in an error. For document of size greater than the maximum allowed, you must first resize the image before adding it to the LEADTOOLS Plus OCR engine. The Professional and Advantage engines do not have a restriction on the image size.

Example
For an example on how to insert a page, refer to InsertPage. For an example on how to add pages from a RasterImage, refer to AddPages.
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

IOcrPageCollection Interface
IOcrPageCollection Members
Overload List
OcrEngineManager Class
OcrEngineType Enumeration
IOcrPage Interface
Programming with the LEADTOOLS .NET OCR

 

 


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InsertPages(Int32,RasterImage,Int32,Int32,OcrProgressCallback) requires an OCR module license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features