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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
+ );
+
+};