WindowInteropHelper.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Interop / WindowInteropHelper.cs / 1 / WindowInteropHelper.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// File: WindowInteropHelper.cs
//
// Description: Implements Avalon WindowInteropHelper classes, which helps 
//              interop b/w legacy and Avalon Window.
// 
// Created: 05/06/03 
//
// Copyright (C) 2001 by Microsoft Corporation.  All rights reserved. 
//
//---------------------------------------------------------------------------

using System; 
using System.Windows;
using System.Windows.Interop; 
using System.Security; 
using System.Security.Permissions;
using System.Diagnostics; 
using MS.Internal;
using MS.Internal.PresentationFramework;                   // SecurityHelper
using MS.Win32;
 
namespace System.Windows.Interop
{ 
    #region class WindowInteropHelper 
    /// 
    /// Implements Avalon WindowInteropHelper classes, which helps 
    /// interop b/w legacy and Avalon Window.
    /// 
    public sealed class WindowInteropHelper
    { 

        //--------------------------------------------------- 
        // 
        // Constructors
        // 
        //---------------------------------------------------
        #region Constructors

        ///  
        ///
        ///  
        ///  
        public WindowInteropHelper(Window window)
        { 
            if (window == null)
                throw new ArgumentNullException("window");
            _window = window;
        } 

        #endregion Constructors 
 

        //---------------------------------------------------- 
        //
        // Public Properties
        //
        //--------------------------------------------------- 
        #region Public Properties
 
        ///  
        /// Get the Handle of the window
        ///  
        /// 
        ///     Callers must have UIPermission(UIPermissionWindow.AllWindows) to call this API.
        /// 
        ///  
        ///   Critical: Exposes a handle
        ///   PublicOK: There is a demand , this API not available in internet zone 
        ///  
        public IntPtr Handle
        { 
            [SecurityCritical]
            get
            {
                SecurityHelper.DemandUIWindowPermission(); 
                return CriticalHandle;
            } 
        } 

        ///  
        ///   Critical: Exposes a handle
        /// 
        internal IntPtr CriticalHandle
        { 
            [SecurityCritical]
            get 
            { 
                Invariant.Assert(_window != null, "Cannot be null since we verify in the constructor");
                return _window.CriticalHandle; 
            }
        }

        ///  
        /// Get/Set the Owner handle of the window
        ///  
        ///  
        ///     Callers must have UIPermission(UIPermissionWindow.AllWindows) to call this API.
        ///  
        /// 
        ///   Critical: Exposes a handle
        ///   PublicOK: There is a demand , this API not available in internet zone
        ///  
        public IntPtr Owner
        { 
            [SecurityCritical] 
            get
            { 
                SecurityHelper.DemandUIWindowPermission();
                Debug.Assert(_window != null, "Cannot be null since we verify in the constructor");
                return _window.OwnerHandle;
            } 
            [SecurityCritical]
            set 
            { 
                SecurityHelper.DemandUIWindowPermission();
                Debug.Assert(_window != null, "Cannot be null since we verify in the constructor"); 
                // error checking done in Window
                _window.OwnerHandle = value;
            }
        } 

 
 
        #endregion Public Properties
 

        //----------------------------------------------
        //
        // Private Fields 
        //
        //---------------------------------------------- 
        #region Private Fields 

        private Window      _window; 

        #endregion Private Members
    }
    #endregion class WindowInteropHelper 
}
 

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

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