Is this page helpful?
public float Highlight { get; set; }
The highlight value.
using Leadtools;
using Leadtools.Twain;
public void ImageEffectsPropertyExample(IntPtr parent)
{
try
{
TwainSession session = new TwainSession();
session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);
TwainProperties props = session.Properties;
TwainImageEffectsProperties imageEfx = props.ImageEffects;
imageEfx.PixelFlavor = TwainImagePixelFlavor.Vanilla;
imageEfx.ColorScheme = TwainColorScheme.BlackWhite;
imageEfx.Highlight = 50;
imageEfx.Shadow = 50;
imageEfx.Brightness = 500;
imageEfx.Contrast = 100;
string buffer = string.Format("Current used Halftone = {0}", imageEfx.Halftone);
MessageBox.Show(buffer);
props.ImageEffects = imageEfx;
session.Properties = props;
session.Shutdown();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}