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LEADTOOLS Raster Imaging C DLL Help

AUTOZONECALLBACK

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#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction(pRect, uType, pUserData)

L_RECT * pRect;

/* zone rectangle */

L_UINT uType;

/* zone type */

L_VOID * pUserData;

/* pointer to additional parameters */

Handles each zone detected by the L_AutoZoneBitmap function.

Parameter

Description

pRect

The rectangle that bounds the detected zone.

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.

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

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

LTIMGCOR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:

L_AutoZoneBitmap, L_FreeZoneData

Topics:

Support Functions: Callbacks

 

Processing an Image

Example

For an example, refer to L_AutoZoneBitmap.

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