L_TwainGetImageUnit

#include "lttwn.h"

L_LTTWN_API L_INT L_TwainGetImageUnit (hSession, pnUnit)

HTWAINSESSION hSession;	/* handle to an existing TWAIN session */
L_INT * pnUnit;	/* pointer to a variable */

Gets the current image unit value used when transferring images from the current TWAIN source.

Parameter	Description
hSession	Handle to an existing TWAIN session. This handle is obtained by calling the L_TwainInitSession function.
pnUnit	Pointer to a variable to be updated with the current image unit value. For more information on possible values, refer to www.twain.org and download the latest TWAIN Specification.

Returns

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

Comments

This function gets the value of the image unit capability ICAP_UNITS. For more information on this capability, refer to www.twain.org/download.htm and click on TWAIN Specification (Version 1.9).

To set the image unit capability value, call the L_TwainSetImageUnit 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.

Functions:	L_TwainSetTransferOptions, L_TwainGetTransferOptions, L_TwainGetSupportedTransferMode, L_TwainSetResolution, L_TwainGetResolution, L_TwainSetImageFrame, L_TwainGetImageFrame, L_TwainSetImageUnit, L_TwainSetImageBitsPerPixel, L_TwainGetImageBitsPerPixel, L_TwainSetImageEffects, L_TwainGetImageEffects, L_TwainSetAcquirePageOptions, L_TwainGetAcquirePageOptions, L_TwainSetRGBResponse, L_TwainShowProgress, L_TwainEnableDuplex, L_TwainGetDuplexOptions, L_TwainSetMaxXferCount, L_TwainGetMaxXferCount
Topics:	Getting and Setting Capabilities
	TWAIN Functionality: Capability Functions