L_TwainGetImageBitsPerPixel

Show in webframe

#include "lttwn.h"

L_LTTWN_API L_INT L_TwainGetImageBitsPerPixel(hSession, pnBitsPerPixel)

HTWAINSESSION hSession;	/* handle to an existing TWAIN session */
L_INT * pnBitsPerPixel;	/* pointer to the bits per pixel */

Gets the current bits per pixel 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.
pnBitsPerPixel	Pointer to a variable to be updated with the number of bits per pixel. For more information on possible values, refer to www.twain.org/download.htm and click on TWAIN Specification (Version 1.9).

Returns

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

Comments

This function gets the bits per pixel capability ICAP_BITDEPTH. For more information on this capability, refer to www.twain.org/download.htm and click on TWAIN Specification (Version 1.9).

To set the bits per pixel capability, call the L_TwainSetImageBitsPerPixel 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_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

Example

For an example, refer to L_TwainSetImageUnit.