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LTwain::EnableDuplex

Summary

Enables or disables the duplex mode.

Syntax

#include "ltwrappr.h"

L_INT LTwain::EnableDuplex (bEnableDuplex)

Parameters

L_BOOL bEnableDuplex

Flag that indicates whether to enable or disable the duplex mode. Possible values are:

Value	Meaning
TRUE	Enables the duplex mode.
FALSE	Disables the duplex mode.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function internally sets the duplex enabled capability CAP_DUPLEXENABLED. For more information on these capabilities, refer to the TWAIN specification.

To get the current values of this capability, call the LTwain::GetDuplexOptions function.

Required DLLs and Libraries

LTTWN
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Example

L_INT LTwain__EnableDuplexExample(LTwain * plTwain)  
 
{ 
   L_INT    nRet; 
   L_BOOL   bEnableDuplex;  
   L_INT    nDuplexMode;  
   L_INT    nMaxXfer;  
 
   nRet = plTwain->GetDuplexOptions(&bEnableDuplex, &nDuplexMode);  
   if(nRet != SUCCESS) 
      return nRet; 
 
   if (bEnableDuplex != TRUE)  
 
   { 
      nRet = plTwain->EnableDuplex(TRUE);  
      if(nRet != SUCCESS) 
         return nRet; 
   } 
 
   nRet = plTwain->GetMaxXferCount (&nMaxXfer);  
   if(nRet != SUCCESS) 
      return nRet; 
 
   if (nMaxXfer != 10)  
 
   { 
      nRet = plTwain->SetMaxXferCount (10);  
      if(nRet != SUCCESS) 
         return nRet; 
   } 
 
   return SUCCESS; 
}