In This Topic ▼

LBitmap::InvertedTextCallBack

#include "ltwrappr.h"

virtual L_INT LBitmap::InvertedTextCallBack(hRgn, pBoundingRect, iWhiteCount, iBlackCount)

HRGN hRgn;	windows region
PRECT pBoundingRect;	pointer to a RECT structure
L_INT32 iWhiteCount;	number of white pixels
L_INT32 iBlackCount;	number of black pixels

Called for each inverted text segment found by LBitmap::InvertedText.

Parameter	Description
hRgn	Windows region representing the inverted text to be removed. It is the programmers responsibility to delete this region (using DeleteObject()) when it is no longer needed.
pBoundingRect	Pointer to a RECT structure that contains the bounding rectangle of the inverted text region being processed.
iWhiteCount	Total number of white pixels in the inverted text region being processed.
iBlackCount	Total number of black pixels in the inverted text region being processed.

Returns

SUCCESS_REMOVE	Invert the text.
SUCCESS_NOREMOVE	Do not invert the text.
Otherwise	An error occurred. Refer to Return Codes.

Comments

This function is called once for each area of inverted text that is detected. Return SUCCESS_REMOVE to have the area modified. Return SUCCESS_NOREMOVE to leave the area unchanged. Pass any other value to abort. This value will be the return value of the LBitmap::InvertedText(). If flags INVERTEDTEXT_IMAGE_UNCHANGED and INVERTEDTEXT _SINGLE_REGION are being used, then the return value of this function affects only the internal single region that contains all the changes.

Required DLLs and Libraries

LTIMG

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

Platforms

Win32, x64.