Function AddDib( _
   ByVal dib As IntPtr, _
   ByVal callback As OcrProgressCallback _
) As IOcrPage

Visual Basic (Usage)	Copy Code
Dim instance As IOcrPageCollection Dim dib As IntPtr Dim callback As OcrProgressCallback Dim value As IOcrPage   value = instance.AddDib(dib, callback)

IOcrPage AddDib( 
   IntPtr dib,
   OcrProgressCallback callback
)

IOcrPage^ AddDib( 
   IntPtr dib,
   OcrProgressCallback^ callback
) 

Parameters

dib

An unmanaged pointer to the DIB (device-independent bitmap).

callback

Optional callback to show operation progress.

Return Value

This method will add a device independent bitmap (DIB) stored in an unmanaged memory pointer to the OCR document.

This method will add the page to the end of the collection if you already have pages in this IOcrPageCollection.

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.

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

Reference