SMOOTHCALLBACK - Raster Imaging C API Help

SMOOTHCALLBACK

#include "l_bitmap.h"

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

L_UINT uBumpOrNick;

flag

L_INT iStartRow;

starting row

L_INT iStartCol;

starting column

L_INT iLength;

length

L_UINT uHorV;

flag

L_VOID *pUserData;

pointer to additional parameters

Handles each bump or nick found by L_SmoothBitmap.

Parameter Description
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.
iStartRow The starting row of the bump or nick. The rows are zero-based.
iStartCol The starting column of the bump or nick. The columns are zero-based.
iLength Length (in pixels) of the bump or nick.
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
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

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

LTIMGCOR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:

L_SmoothBitmap

Topics:

Cleaning Up 1-Bit Images

Example

For an example, refer to L_SmoothBitmap.

Help Version 20.0.2018.7.30
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