SetVersion Method

Summary

Sets the desired TWAIN version with which to work.

Syntax

C++/CLI

Python

public static void SetVersion( 
   TwainVersion twainVersion 
)

public: 
static void SetVersion(  
   TwainVersion twainVersion 
)

def SetVersion(self,twainVersion):

Parameters

twainVersion
The TWAIN version to set. See TwainVersion for a list of available versions.

Remarks

This method overrides the default TWAIN (version 2) used for scanning. This allows the TWAIN version to be changed without having to rename or delete any of the TWAIN version DLLs from the system directory. The TWAIN version 1 DLL name is Twain_32.dll and the version 2 DLL name is TWAINDSM.DLL. If this method is not called the engine will keep the default behavior and look for TWAIN version 2 first. If version 2 does not exist it will then look for TWAIN version 1. If this method is called and returns SUCCESS there is no need to call Leadtools.Twain.TwainSession.IsAvailable since this internally calls it. For more information, refer to Setting Which TWAIN Specification Version to Use.

Example

using Leadtools; 
using Leadtools.Twain; 
 
 
public void SetVersionExample(IntPtr parent, TwainVersion twainVersion) 
{ 
   TwainSession session = new TwainSession(); 
 
   try 
   { 
      TwainSession.SetVersion(twainVersion); 
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.Message); 
   } 
 
   session.Shutdown(); 
}

Requirements

Target Platforms

Reference

TwainSession Class

TwainSession Members

IsAvailable Method

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Help Version 22.0.2023.3.31

Leadtools.Twain Assembly

Introduction

Getting Started

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Leadtools.Twain Namespace

Assemblies