GammaCorrection 

Overview

If GammaCorrection is set to a value other than 100 then the toolkit will apply gamma correction to a color image. The amount of gamma correction is equal to GammaCorrection / 100. For example, to achieve a gamma correction of 0.5 the property should be set to a value of 50.

Default value = 100

void STSetParameter(hBarcode, ST_GAMMA_CORRECTION, uint16 *value) ;

void STGetParameter(hBarcode, ST_GAMMA_CORRECTION, uint16 *value) ;

e.g

#include "barcode.h"
uint16 value = 1 ;
STSetParameter(hBarcode, ST_GAMMA_CORRECTION, &value) ;