Gets or sets the brightness, highlight and contrast values to use when transferring images from the current TWAIN source.
public TwainImageEffects ImageEffects { get; set; }
Public Property ImageEffects As TwainImageEffects
public:
property TwainImageEffects ImageEffects {
TwainImageEffects get();
void set ( TwainImageEffects );
}
Image Effects as brightness, highlight and contrast values to use when transferring images from the current TWAIN source
The ImageEffects property will get and set the brightness, highlight and contrast values for the current TWAIN source.
using Leadtools;
using Leadtools.Twain;
public void ImageEffectsPropertyExample(IntPtr parent)
{
TwainSession session = new TwainSession();
session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);
TwainImageEffects imgEffects = session.ImageEffects;
imgEffects.Flags = TwainImageEffectsFlags.NegotiateBrightness | TwainImageEffectsFlags.NegotiateContrast | TwainImageEffectsFlags.NegotiateHighlight;
float contrast = imgEffects.Contrast;
float highlight = imgEffects.Highlight;
string msg = String.Format("Image Contrst = {0}\nImage Highlight = {1}", contrast, highlight);
MessageBox.Show(msg);
imgEffects.Brightness = 100;
session.ImageEffects = imgEffects;
TwainAcquirePageOptions pageOpts = session.AcquirePageOptions;
pageOpts.PaperSize = TwainPaperSize.A4;
pageOpts.PaperOrientation = TwainPaperOrientation.Landscape;
session.AcquirePageOptions = pageOpts;
session.Shutdown();
}
Imports Leadtools
Imports Leadtools.Twain
Public Sub ImageEffectsPropertyExample(ByVal parent As IntPtr)
Dim session As TwainSession = New TwainSession()
session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)
Dim imgEffects As TwainImageEffects = session.ImageEffects
imgEffects.Flags = TwainImageEffectsFlags.NegotiateBrightness Or TwainImageEffectsFlags.NegotiateContrast Or TwainImageEffectsFlags.NegotiateHighlight
Dim contrast As Single = imgEffects.Contrast
Dim highlight As Single = imgEffects.Highlight
Dim msg As String = String.Format("Image Contrst = {0}" & Constants.vbLf & "Image Highlight = {1}", contrast, highlight)
MessageBox.Show(msg)
imgEffects.Brightness = 100
session.ImageEffects = imgEffects
Dim pageOpts As TwainAcquirePageOptions = session.AcquirePageOptions
pageOpts.PaperSize = TwainPaperSize.A4
pageOpts.PaperOrientation = TwainPaperOrientation.Landscape
session.AcquirePageOptions = pageOpts
session.Shutdown()
End Sub
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