AUTOZONECALLBACK

Summary

Handles each zone detected by the L_AutoZoneBitmap function.

Syntax

#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction(pRect, uType, pUserData)

Parameters

L_RECT * pRect

The rectangle that bounds the detected zone.

L_UINT uType

Value that determines the zone type. Possible values are:

Value Meaning
LEAD_ZONE_TYPE_TEXT [0x0000] The detected zone is a text.
LEAD_ZONE_TYPE_GRAPHIC [0x0001] The detected zone is a graphic
LEAD_ZONE_TYPE_TABLE [0x0002] The detected zone is a table.
LEAD_ZONE_TYPE_DOT_LINE [0x0003] The detected zone is a line.

L_VOID * pUserData

A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of the L_AutoZoneBitmap function).

Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.

Returns

Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.

Comments

If no zones were detected the callback will not be fired.

Required DLLs and Libraries

See Also

Functions

Topics

Example

For an example, refer to L_AutoZoneBitmap.

Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C API Help
Introduction
Version History
Getting Started
Files To Be Included With Your Application
Document Writers – Files To Be Included With Your Application
LEADTOOLS Raster Imaging Features
Quick Reference
Tutorials
Function References
Callback Functions
Summary of Features
Appendix

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.