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ImageResolution Property

Summary

Gets or sets image resolution properties for the current data source.

Syntax

C#
VB
C++
public TwainImageResolutionProperties ImageResolution { get; set; } 
Public Property ImageResolution As Leadtools.Twain.TwainImageResolutionProperties 

Property Value

TwainImageResolutionProperties structure contains Image effects data class.

Remarks

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.

Example

C#
VB
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); 
   } 
} 
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 

Requirements

Target Platforms

Help Version 19.0.2017.10.18
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Leadtools.Twain Assembly