References ▼
#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 or L_TwainInitSession2 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. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
This function gets the value of the image unit capability ICAP_UNITS. For more information on this capability, refer to http://www.twain.org/ 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. |
For an example, refer to L_TwainSetImageUnit.