ImageResolution Property

C#
Visual Basic
Java
Objective-C
C++

public TwainImageResolutionProperties ImageResolution {get; set;}

'Declaration

Public Property ImageResolution As TwainImageResolutionProperties

'Usage

Dim instance As TwainProperties
Dim value As TwainImageResolutionProperties
 
instance.ImageResolution = value
 
value = instance.ImageResolution

public:
property TwainImageResolutionProperties ImageResolution {
   TwainImageResolutionProperties get();
   void set (    TwainImageResolutionProperties value);
}

Property Value

TwainImageResolutionProperties structure contains Image effects data class.

This property should be called after calling the get Properties property After you update this structure, you can update the TWAIN source by calling the set Properties property.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Twain

Public Sub twainSession_SetProperty(ByVal sender As Object, ByVal e As TwainSetPropertyEventArgs)
   Dim msg As String = String.Format("Capability %d\nStatus = %d", e.Capability, e.Status)
   e.Stop = False
End Sub
Public Sub ImageResolutionPropertyExample(ByVal parent As IntPtr)
   Try
      Dim session As TwainSession = New TwainSession()
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)

      session.EnableSetPropertyEvent = True
      AddHandler session.SetProperty, AddressOf twainSession_SetProperty

      Dim props As TwainProperties = session.Properties
      Dim imageRes As TwainImageResolutionProperties = props.ImageResolution

      imageRes.UnitOfResolution = TwainImageUnit.Inches
      imageRes.BitsPerPixel = 1
      imageRes.HorizontalResolution = 150
      imageRes.VerticalResolution = 150
      imageRes.XScaling = 1
      imageRes.YScaling = 1
      imageRes.RotationAngle = 90

      imageRes.LeftMargin = 0
      imageRes.RightMargin = 0
      imageRes.TopMargin = 200
      imageRes.BottomMargin = 200

      props.EnableAutoFeed = True
      props.MaximumNumberOfPages = -1

      Dim buffer As String = String.Format("Duplex state = {0}", session.DuplexScanningMode.ToString())
      MessageBox.Show(buffer)

      props.ImageResolution = imageRes
      session.Properties = props
      session.Shutdown()
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try
End Sub

using Leadtools;
using Leadtools.Twain;

void session_SetProperty(object sender, TwainSetPropertyEventArgs e)
{
   string msg = string.Format("Capability %d\nStatus = %d", e.Capability, e.Status);
   e.Stop = false;
}
public void ImageResolutionPropertyExample(IntPtr parent)
{
   try
   {
      TwainSession session = new TwainSession();
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);

      session.EnableSetPropertyEvent = true;
      session.SetProperty += new EventHandler<TwainSetPropertyEventArgs>(session_SetProperty);
      TwainProperties props = session.Properties;
      TwainImageResolutionProperties imageRes = props.ImageResolution;

      imageRes.UnitOfResolution = TwainImageUnit.Inches;
      imageRes.BitsPerPixel = 1;
      imageRes.HorizontalResolution = 150;
      imageRes.VerticalResolution = 150;
      imageRes.XScaling = 1;
      imageRes.YScaling = 1;
      imageRes.RotationAngle = 90;

      imageRes.LeftMargin = 0;
      imageRes.RightMargin = 0;
      imageRes.TopMargin = 200;
      imageRes.BottomMargin = 200;

      props.EnableAutoFeed = true;
      props.MaximumNumberOfPages = -1;

      string buffer = string.Format("Duplex state = {0}", session.DuplexScanningMode.ToString());
      MessageBox.Show(buffer);

      props.ImageResolution = imageRes;
      session.Properties = props;
      session.Shutdown();
   }
   catch (Exception ex)
   {
      MessageBox.Show(ex.Message);
   }
}

Target Platforms

Reference

TwainProperties Structure
TwainProperties Members