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SMOOTHCALLBACK

#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.

Parameters

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.

L_UINT uHorV

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.

Returns

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.

Comments

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