safesecurityhelperavalon.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Internal / safesecurityhelperavalon.cs / 1305600 / safesecurityhelperavalon.cs
                        

                        
                            /****************************************************************************\ 
*
* File: SafeSecurityHelper.cs
*
* Purpose:  Helper functions for avalon code that require elevation but are safe to use. 
*
* History: 
*    12/09/04:    marka Created 
*
* Copyright (C) 2004 by Microsoft Corporation.  All rights reserved. 
*
\***************************************************************************/

using System; 
using System.Globalization;
using System.Security; 
using System.Security.Permissions; 
using System.Reflection;
using System.Windows.Media ; 
using System.Windows;

//****************
// 
// this class is for helpers that require avalon.
// done this way so that Compiler doesn't build this file to minimize dependencies compiler has. 
// 
//****************
 
#if WINDOWS_BASE
namespace MS.Internal.WindowsBase
#elif PRESENTATION_CORE
namespace MS.Internal.PresentationCore 
#elif PRESENTATIONFRAMEWORK
namespace MS.Internal.PresentationFramework 
#elif DRT 
namespace MS.Internal.Drt
#else 
#error Attempting to use this class from an unknown assembly.
#endif
{
    internal  static partial class SafeSecurityHelper 
    {
 
        ///  
        /// is this visual connected to presentation source ?
        /// i.e. is it "renderable" ? 
        ///
        /// 
        /// Critical - extracts presentationsource
        /// TreatAsSafe - Knowing whether you're connected to presentation source is ok. 
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        internal static bool IsConnectedToPresentationSource( Visual visual ) 
        {
            bool isConnected = false; 

            isConnected = PresentationSource.CriticalFromVisual(visual ) != null;

            return isConnected ; 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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