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Handles each zone detected by the L_AutoZoneBitmap function.
#include "l_bitmap.h"
L_INT pEXT_CALLBACK YourFunction(pRect, uType, pUserData)
The rectangle that bounds the detected zone.
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. |
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.
For an example, refer to L_AutoZoneBitmap.
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