CompressionMode Property

Summary

Gets or sets the compression type to use when transferring data from the current TWAIN source. This property is valid only if the TransferMode property is set to TwainTransferMode.Buffer.

Syntax

C++/CLI

Python

public TwainCompressionMode CompressionMode { get; set; }

public: 
property TwainCompressionMode CompressionMode { 
   TwainCompressionMode get(); 
   void set (    TwainCompressionMode ); 
}

CompressionMode # get and set (TwainTransferOptions)

Property Value

The memory compression type to be used when the transfer mode is TwainTransferMode.Buffer.

Remarks

To update this property with the current value, call the TransferOptions property. To set the compression type, assign a new value to this property and call the TransferOptions property.

Example

using Leadtools; 
using Leadtools.Twain; 
 
 
public void TransferOptionsPropertyExample(IntPtr parent) 
{ 
   TwainSession session = new TwainSession(); 
   session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); 
 
   TwainTransferOptions opts = session.TransferOptions; 
 
   opts.TransferMode = TwainTransferMode.File; 
   opts.FileName = Path.Combine(LEAD_VARS.ImagesDir, "test.bmp"); 
   opts.FileFormat = RasterImageFormat.Bmp; 
   opts.CompressionMode = TwainCompressionMode.None; 
 
   session.TransferOptions = opts; 
 
   if (session.IsTransferModeAvailable(TwainTransferMode.File)) 
      MessageBox.Show("File transfer is supported"); 
 
   if (session.IsTransferModeAvailable(TwainTransferMode.Buffer)) 
      MessageBox.Show("Memory transfer is supported"); 
 
   if (session.IsTransferModeAvailable(TwainTransferMode.Native)) 
      MessageBox.Show("Native transfer is supported"); 
 
   session.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

TwainTransferOptions Structure

TwainTransferOptions Members

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Help Version 22.0.2023.3.31

Leadtools.Twain Assembly

Introduction

Getting Started

Namespaces

Leadtools.Twain Namespace

Assemblies