#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction(pRect, uType, pUserData)

Handles each zone detected by the L_AutoZoneBitmap function.


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.


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


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

Required DLLs and Libraries

See Also




For an example, refer to L_AutoZoneBitmap.

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