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#include "l_bitmap.h"
L_INT EXT_CALLBACK YourFunction (rcRect, pObject, pUserData)
Handles each object found by L_ObjectCounter function.
A rectangle structure used to specify the area where the object exists.
A two dimensional array represents the information about the object shape.
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 L_ObjectCounter 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. |
This function is used to control a part of the image where the object was found.
L_ObjectCounter supports only 1-bit images. The callback should reflect that if there are any operations on the image itself.
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