L_TwainGetResolution

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#include "lttwn.h"

L_LTTWN_API L_INT L_TwainGetResolution(hSession, pXRes, pYRes)

HTWAINSESSION hSession;	/* handle to an existing TWAIN session */
pTW_FIX32 pXRes;	/* pointer to a variable */
pTW_FIX32 pYRes;	/* pointer to a variable */

Gets the current horizontal and vertical resolution used to transfer 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.
pXRes	Pointer to a variable to be updated with the current horizontal resolution value.
pYRes	Pointer to a variable to be updated with the current vertical resolution value.

Returns

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

Comments

This function gets the horizontal and vertical resolution capability values ICAP_XRESOLUTION and ICAP_YRESOLUTION. For more information on these capabilities, refer to www.twain.org/download.htm and click on TWAIN Specification (Version 1.9).

To set the resolution values, call the L_TwainSetResolution 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_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_TwainGetDuplexOptions, L_TwainSetMaxXferCount, L_TwainGetMaxXferCount, L_TwainFix32ToFloat
Topics:	Getting and Setting Capabilities
	TWAIN Functionality: Capability Functions

Example

For an example, refer to L_TwainSetResolution.