L_TwainGetImageFrame

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#include "lttwn.h"

L_LTTWN_API L_INT L_TwainGetImageFrame(hSession, pFrame)

HTWAINSESSION hSession;	/* handle to an existing TWAIN session */
pTW_FRAME pFrame;	/* pointer to a structure */

Gets the current image frame 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.
pFrame	Pointer to a structure to be updated with the current image frame.

Returns

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

Comments

The image frame specifies the size and location of the image to acquire. To set the image frame for the current TWAIN source, call the L_TwainSetImageFrame 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_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_TwainSetImageFrame.