L_TwainGetDuplexOptions

#include "lttwn.h"

L_LTTWN_API L_INT L_TwainGetDuplexOptions(hSession, pbEnableDuplex, pnDuplexMode)

Gets the current duplex mode and the enabled status of the current duplex mode for the current TWAIN source.

Parameters

HTWAINSESSION hSession

Handle to an existing TWAIN session. This handle is obtained by calling the L_TwainInitSession or L_TwainInitSession2 function.

L_BOOL * pbEnableDuplex

Pointer to a variable to be updated with a value that specifies whether the duplex mode is enabled or disabled. Possible values are:

Value Meaning
TRUE Duplex mode is enabled.
FALSE Duplex mode is disabled.

L_INT * pnDuplexMode

Pointer to a variable to be updated with the duplex mode value.

Returns

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

Comments

This function gets the current duplex mode capability CAP_DUPLEX, and the duplex mode's enabled status capability CAP_DUPLEXENABLED values. For more information on these capabilities, refer to the TWAIN specification.

To set these capabilities, call the L_TwainEnableDuplex function.

This function should be called after calling the L_TwainStartCapsNeg function and before calling the L_TwainEndCapsNeg function.

Required DLLs and Libraries

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