#include "l_bitmap.h"

L_INT pEXT_CALLBACK Your Function(uBumpOrNick, iStartRow, iStartCol, iLength, uHorV, pUserData)

Handles each bump or nick found by L_SmoothBitmap.


L_UINT uBumpOrNick

Flag that indicates whether to remove bumps or fill in nicks. Possible values are:

Value Meaning
SMOOTH_NONE Do nothing.
SMOOTH_BUMP Remove a bump.
SMOOTH_NICK Fill in a nick.

L_INT iStartRow

The starting row of the bump or nick. The rows are zero-based.

L_INT iStartCol

The starting column of the bump or nick. The columns are zero-based.

L_INT iLength

Length (in pixels) of the bump or nick.


Flag that indicates whether the element being smoothed is vertical or horizontal. Possible values are:

Value Meaning
SMOOTH_HORIZONTAL_ELEMENT A horizontal bump or nick
SMOOTH_VERTICAL_ELEMENT A vertical bump or nick

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 L_SmoothBitmap).

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_REMOVE Remove the bump or nick.
SUCCESS_NOREMOVE Do not remove the bump or nick.
Otherwise An error occurred. Refer to Return Codes.


The callback is called for each bump and nick found. Return SUCCESS_REMOVE to have the bump or nick removed. Return SUCCESS_NOREMOVE to leave the bump or nick unchanged. Pass any other value to abort. This value will be the return value of the L_SmoothBitmap(). If flags SMOOTH_IMAGE_UNCHANGED and SMOOTH_SINGLE_REGION are being used, then the return value of the callback affects only the internal single region that contains all the changes.

Required DLLs and Libraries

See Also




For an example, refer to L_SmoothBitmap.

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