L_TwainGetDuplexOptions

Summary

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

Syntax

L_LTTWN_API L_INT L_TwainGetDuplexOptions(hSession, pbEnableDuplex, pnDuplexMode)

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:

L_INT * pnDuplexMode

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

Returns

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

• 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.

See Also

Functions

• L_TwainSetTransferOptions
• L_TwainGetTransferOptions
• L_TwainGetSupportedTransferMode
• L_TwainSetResolution
• L_TwainGetResolution
• L_TwainSetImageFrame
• L_TwainGetImageFrame
• L_TwainSetImageUnit
• L_TwainGetImageUnit
• L_TwainSetImageBitsPerPixel
• L_TwainGetImageBitsPerPixel
• L_TwainSetImageEffects
• L_TwainGetImageEffects
• L_TwainSetAcquirePageOptions
• L_TwainGetAcquirePageOptions
• L_TwainSetRGBResponse
• L_TwainShowProgress
• L_TwainEnableDuplex
• L_TwainSetMaxXferCount
• L_TwainGetMaxXferCount

Topics

• Getting and Setting Capabilities
• TWAIN Functionality: Capability Functions

Example

For an example, refer to L_TwainEnableDuplex.