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 /*************************************************************************

  *

  *  File Name (AccessibleValue.idl)

  * 

  *  IAccessible2 IDL Specification 

  * 

  *  Copyright (c) 2007, 2010 Linux Foundation 

  *  Copyright (c) 2006 IBM Corporation 

  *  Copyright (c) 2000, 2006 Sun Microsystems, Inc. 

  *  All rights reserved. 

  *   

  *   

  *  Redistribution and use in source and binary forms, with or without 

  *  modification, are permitted provided that the following conditions 

  *  are met: 

  *   

  *   1. Redistributions of source code must retain the above copyright 

  *      notice, this list of conditions and the following disclaimer. 

  *   

  *   2. Redistributions in binary form must reproduce the above 

  *      copyright notice, this list of conditions and the following 

  *      disclaimer in the documentation and/or other materials 

  *      provided with the distribution. 

  *

  *   3. Neither the name of the Linux Foundation nor the names of its 

  *      contributors may be used to endorse or promote products 

  *      derived from this software without specific prior written 

  *      permission. 

  *   

  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 

  *  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 

  *  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 

  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 

  *  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 

  *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 

  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 

  *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 

  *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 

  *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 

  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 

  *  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 

  *  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

  *   

  *  This BSD License conforms to the Open Source Initiative "Simplified 

  *  BSD License" as published at: 

  *  http://www.opensource.org/licenses/bsd-license.php 

  *   

  *  IAccessible2 is a trademark of the Linux Foundation. The IAccessible2 

  *  mark may be used in accordance with the Linux Foundation Trademark 

  *  Policy to indicate compliance with the IAccessible2 specification. 

  * 

  ************************************************************************/ 

 import "objidl.idl";

 import "oaidl.idl";

 import "oleacc.idl";

 /** @brief This interface gives access to a single numerical value.

  The %IAccessibleValue interface represents a single numerical value and should 

   be implemented by any class that supports numerical value like progress bars 

   and spin boxes.  This interface lets you access the value and its upper and 

   lower bounds.

 */

 [object, uuid(35855B5B-C566-4fd0-A7B1-E65465600394)]

 interface IAccessibleValue : IUnknown

 {

   /** @brief Returns the value of this object as a number.

    The exact return type is implementation dependent.  Typical types are long and 

     double.

    @param [out] currentValue

     Returns the current value represented by this object.  See the section about 

 	@ref _variants "VARIANTs" for additional information.

    @retval S_OK

    @retval S_FALSE if there is nothing to return, [out] value is a VARIANT with vt = VT_EMPTY

   */

   [propget] HRESULT currentValue

     (

      [out, retval] VARIANT *currentValue

     );

   /** @brief Sets the value of this object to the given number.

    The argument is clipped to the valid interval whose upper and lower 

     bounds are returned by the methods IAccessibleValue::maximumValue and 

 	IAccessibleValue::minimumValue, i.e. if it is 	lower than the minimum 

 	value the new value will be the minimum and if it is greater than the 

 	maximum then the new value will be the maximum.

    @param [in] value

     The new value represented by this object.  The set of admissible types for 

     this argument is implementation dependent.

    @retval S_OK

   */

   HRESULT setCurrentValue

     (

      [in] VARIANT value

     );

   /** @brief Returns the maximal value that can be represented by this object.

    The type of the returned value is implementation dependent.  It does not have 

     to be the same type as that returned by method IAccessibleValue::currentValue.

    @param [out] maximumValue

     Returns the maximal value in an implementation dependent type. If this object 

     has no upper bound then an empty object is returned.  See the section about 

 	@ref _variants "VARIANTs" for additional information.

    @retval S_OK

    @retval S_FALSE if there is nothing to return, [out] value is a VARIANT with vt = VT_EMPTY

   */

   [propget] HRESULT maximumValue

     (

      [out, retval] VARIANT *maximumValue

     );

   /** @brief Returns the minimal value that can be represented by this object.

    The type of the returned value is implementation dependent.  It does not have 

     to be the same type as that returned by method IAccessibleValue::currentValue.

    @param [out] minimumValue

     Returns the minimal value in an implementation dependent type. If this object 

     has no lower bound then an empty object is returned.  See the section about 

 	@ref _variants "VARIANTs" for additional information.

    @retval S_OK

    @retval S_FALSE if there is nothing to return, [out] value is a VARIANT with vt = VT_EMPTY

   */

   [propget] HRESULT minimumValue

     (

      [out, retval] VARIANT *minimumValue

     );

 };