BufferedGraphicsManager.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / CommonUI / System / Drawing / BufferedGraphicsManager.cs / 1 / BufferedGraphicsManager.cs
                        

                        
                             
//------------------------------------------------------------------------------
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
//  
//-----------------------------------------------------------------------------
 
namespace System.Drawing { 
    using System;
    using System.ComponentModel; 
    using System.Collections;
    using System.Drawing;
    using System.Drawing.Drawing2D;
    using System.Drawing.Text; 
    using System.Diagnostics;
    using System.Runtime.InteropServices; 
    using System.Threading; 
    using System.Security;
    using System.Security.Permissions; 
    using System.Runtime.ConstrainedExecution;

    /// 
    ///  
    ///         The BufferedGraphicsManager is used for accessing a BufferedGraphicsContext.
    ///  
    public sealed class BufferedGraphicsManager { 
        private static BufferedGraphicsContext bufferedGraphicsContext;
 
        /// 
        /// 
        ///         Private constructor.
        ///  
        private BufferedGraphicsManager() {
        } 
 
        /// 
        ///  
        ///         Static constructor.  Here, we hook the exit & unload events so we can clean up our context buffer.
        /// 
        static BufferedGraphicsManager() {
            AppDomain.CurrentDomain.ProcessExit += new EventHandler(BufferedGraphicsManager.OnShutdown); 
            AppDomain.CurrentDomain.DomainUnload += new EventHandler(BufferedGraphicsManager.OnShutdown);
            bufferedGraphicsContext = new BufferedGraphicsContext(); 
        } 

        ///  
        /// 
        ///         Retrieves the context associated with the app domain.
        /// 
        public static BufferedGraphicsContext Current { 
            get {
                return bufferedGraphicsContext; 
            } 
        }
 
        /// 
        /// 
        ///         Called on process exit
        ///  
        [PrePrepareMethod]
        private static void OnShutdown(object sender, EventArgs e) { 
            BufferedGraphicsManager.Current.Invalidate(); 
        }
    } 
}

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

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