RAKEREMOVECALLBACK

#include "l_bitmap.h"

L_INT EXT_CALLBACK YourFunction (hRgn, nLength, pUserData)

L_HRGN hRgn;

windows region

L_INT nLength;

rake length

L_VOID * pUserData;

pointer to additional parameters

Handles each rake found by the L_RakeRemoveBitmap function.

Parameter

Description

hRgn

Windows region representing a rake to be removed. It is the programmers responsibility to delete this region, using L_FreeBitmapRgn when it is no longer needed.

nLength

Length in pixels of the rake.

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_RakeRemoveBitmap) function.

 

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 rake.

SUCCESS_NOREMOVE

Do not remove the rake.

Otherwise

An error occurred. Refer to Return Codes.

Comments

The callback is called for each rake found. Return SUCCESS_REMOVE to have the rake removed. Return SUCCESS_NOREMOVE to leave the rake unchanged. Pass any other value to abort. This value will be the return value of the L_RakeRemoveBitmap function.

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_RakeRemoveBitmap

Topics:

Cleaning Up 1-bit Images

 

Support Functions: Callbacks

Example

For an example, refer to L_RakeRemoveBitmap.

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