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-/*
- File: HID_Transaction_Utilities.h
-
- Contains: Implementation of the HID queue functions for the HID utilites.
-
- DRI: George Warner
-
- Copyright: Copyright © 2002 Apple Computer, Inc., All Rights Reserved
-
- Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
- ("Apple") in consideration of your agreement to the following terms, and your
- use, installation, modification or redistribution of this Apple software
- constitutes acceptance of these terms. If you do not agree with these terms,
- please do not use, install, modify or redistribute this Apple software.
-
- In consideration of your agreement to abide by the following terms, and subject
- to these terms, Apple grants you a personal, non-exclusive license, under Apple’s
- copyrights in this original Apple software (the "Apple Software"), to use,
- reproduce, modify and redistribute the Apple Software, with or without
- modifications, in source and/or binary forms; provided that if you redistribute
- the Apple Software in its entirety and without modifications, you must retain
- this notice and the following text and disclaimers in all such redistributions of
- the Apple Software. Neither the name, trademarks, service marks or logos of
- Apple Computer, Inc. may be used to endorse or promote products derived from the
- Apple Software without specific prior written permission from Apple. Except as
- expressly stated in this notice, no other rights or licenses, express or implied,
- are granted by Apple herein, including but not limited to any patent rights that
- may be infringed by your derivative works or by other works in which the Apple
- Software may be incorporated.
-
- The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
- WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
- WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
- COMBINATION WITH YOUR PRODUCTS.
-
- IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
- OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
- (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef _HID_Transaction_Utilities_h_
-#define _HID_Transaction_Utilities_h_
-
-#include "HID_Utilities.h"
-
-// ==================================
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// ==================================
-// Create and open an transaction interface to device, required prior to extracting values or building Transactions
-extern unsigned long HIDTransactionAddElement(pRecDevice pDevice, pRecElement pElement);
-
-// removes an element from a Transaction
-extern unsigned long HIDTransactionRemoveElement(pRecDevice pDevice, pRecElement pElement);
-
-// return true if this transaction contains this element
-extern Boolean HIDTransactionHasElement(pRecDevice pDevice, pRecElement pElement);
-
-/* This changes the default value of an element, when the values of the */
-/* elements are cleared, on clear or commit, they are reset to the */
-/* default value */
-/* This call can be made on elements that are not in the transaction, but */
-/* has undefined behavior if made on elements not in the transaction */
-/* which are later added to the transaction. */
-/* In other words, an element should be added before its default is */
-/* set, for well defined behavior. */
-extern unsigned long HIDTransactionSetElementDefault(pRecDevice pDevice, pRecElement pElement,IOHIDEventStruct* pValueEvent);
-
-/* Get the current setting of an element's default value */
-extern unsigned long HIDTransactionGetElementDefault(pRecDevice pDevice, pRecElement pElement,IOHIDEventStruct* pValueEvent);
-
-/* Add a change to the transaction, by setting an element value */
-/* The change is not actually made until it is commited */
-/* The element must be part of the transaction or this call will fail */
-extern unsigned long HIDTransactionSetElementValue(pRecDevice pDevice, pRecElement pElement,IOHIDEventStruct* pValueEvent);
-
-/* Get the current setting of an element value */
-extern unsigned long HIDTransactionGetElementValue(pRecDevice pDevice, pRecElement pElement,IOHIDEventStruct* pValueEvent);
-
-/* Commit the transaction, or clear all the changes and start over */
-/* timoutMS is the timeout in milliseconds, a zero timeout will cause */
-/* this call to be non-blocking (returning queue empty) if there */
-/* is a NULL callback, and blocking forever until the queue is */
-/* non-empty if their is a valid callback */
-/* callback, if non-NULL is a callback to be called when data is */
-/* inserted to the queue */
-/* callbackTarget and callbackRefcon are passed to the callback */
-extern unsigned long HIDTransactionCommit(pRecDevice pDevice);
-
-/* Clear all the changes and start over */
-extern unsigned long HIDTransactionClear(pRecDevice pDevice);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _HID_Transaction_Utilities_h_
-