←Select platform

PageRequestCallback Delegate

Summary

Delegate method that is used to request a page and provide the requested page to the caller method.

Syntax

C++

public delegate void PageRequestCallback( 
   PageRequestCallbackData data 
)

  
Public Delegate Sub PageRequestCallback( _ 
   ByVal data As Leadtools.Forms.Auto.PageRequestCallbackData _ 
)

public delegate void PageRequestCallback(  
   Leadtools.Forms.Auto.PageRequestCallbackData^ data 
)

Parameters

data
An instance of the PageRequestCallbackData interface containing the requested image information.

Remarks

This delegate is useful when the number of form pages is not known before recognizing the form or when the users does not want to load all image pages in the memory or load them via network while he needs to process few of them. So the user loads the first page of the form and uses it for recognition, then for processing he will be asked to provide only the pages that have processing fields.

Example

For an example, refer to AutoFormsEngine.Run(RasterImage form, PageRequestCallback pageRequestCallback, Object userData, List<IMasterFormsCategory>).

Requirements

Target Platforms

Reference

PageRequestCallback Members

Leadtools.Forms.Auto Namespace

Help Version 19.0.2017.10.27