JPEG_SET_QUALITY
fQualitySlider->SetValue(fSettings->SetGetInt32(JPEG_SET_QUALITY, NULL));
fSettings->SetGetInt32(JPEG_SET_QUALITY, &value);
{JPEG_SET_QUALITY, TRAN_SETTING_INT32, 95},
jpeg_set_quality(&cinfo, fSettings->SetGetInt32(JPEG_SET_QUALITY, NULL), true);