Startup Method

C#
Visual Basic
Objective-C
Java
C++

public void Startup( 
   IWin32Window owner,
   string manufacturer,
   string productFamily,
   string version,
   string application,
   TwainStartupFlags flags
)

'Declaration
 
Public Sub Startup( _
   ByVal owner As IWin32Window, _
   ByVal manufacturer As String, _
   ByVal productFamily As String, _
   ByVal version As String, _
   ByVal application As String, _
   ByVal flags As TwainStartupFlags _
)

'Usage
 
Dim instance As TwainSession
Dim owner As IWin32Window
Dim manufacturer As String
Dim productFamily As String
Dim version As String
Dim application As String
Dim flags As TwainStartupFlags
 
instance.Startup(owner, manufacturer, productFamily, version, application, flags)

public:
void Startup( 
   IWin32Window^ owner,
   String^ manufacturer,
   String^ productFamily,
   String^ version,
   String^ application,
   TwainStartupFlags flags
)

Parameters

owner: The parent window, this may not be NULL.
manufacturer: Optional name of the application's manufacturer.
productFamily: Optional product family name.
version: Version information.
application: Optional application name.
flags: Flag determines the Startup method behavior

Please note that a TWAIN session is a communication session between Leadtools TWAIN and your TWAIN sources. The internal TWAIN session handle that is created provides the user access to this TWAIN session. This method must be called before calling any other methods that require a TWAIN session.
When the TWAIN session is no longer needed, it should be end by calling the Shutdown method. For every call to the Startup method there must be a call to the Shutdown method. Note: If this function throw TwainExceptionCode::InvalidDll exception then this is mostly because you have an old version of TWAINDSM.DLL in your system folder, you need to make sure you have at least version 2.0.9.0 of this DLL. You can download it from www.twain.org.
For more information, refer to Initializing a TWAIN Source.
For more information, refer to Freeing the TWAIN Session.

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

Copy Code

Imports Leadtools
Imports Leadtools.Twain

Public Sub StartupExample(ByVal parent As IWin32Window)
   Dim session As TwainSession = New TwainSession()
   session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)

   Try
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try

   session.Shutdown()
End Sub

using Leadtools;
using Leadtools.Twain;

public void StartupExample(IWin32Window parent)
{
   TwainSession session = new TwainSession();
   session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);

   try
   {
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);
   }
   catch (Exception ex)
   {
      MessageBox.Show(ex.Message);
   }

   session.Shutdown();
}

Target Platforms

Reference

TwainSession Class
TwainSession Members
Shutdown Method
IsAvailable Method
Acquire Method
SelectSource Method