Syntax
| Visual Basic (Declaration) | |
|---|---|
Public Delegate Sub PageRequestCallback( _ ByVal data As PageRequestCallbackData _ ) | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As New PageRequestCallback(AddressOf HandlerMethod) | |
| C# | |
|---|---|
public delegate void PageRequestCallback( PageRequestCallbackData data ) | |
| C++/CLI | |
|---|---|
public delegate void PageRequestCallback( PageRequestCallbackData^ data ) | |
Parameters
- data
- An instance of the PageRequestCallbackData interface containing the requested image information.
Example
For an example, refer to AutoFormsEngine.Run(RasterImage form, PageRequestCallback pageRequestCallback, Object userData, List<IMasterFormsCategory>).
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.
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7