PreProcessInputEventArgs.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 / Core / System / Windows / Input / PreProcessInputEventArgs.cs / 1 / PreProcessInputEventArgs.cs
                        

                        
                             
using System;
using System.Security.Permissions;
using System.Security;
 
namespace System.Windows.Input
{ 
    ///  
    ///     Allows the handler to cancel the processing of an input event.
    ///  
    /// 
    ///     An instance of this class is passed to the handlers of the
    ///     following events:
    ///      
    ///         
    ///              
    ///          
    ///     
    ///  
    public sealed class PreProcessInputEventArgs : ProcessInputEventArgs
    {
        // Only we can make these.  Note that we cache and reuse instances.
        internal PreProcessInputEventArgs() {} 

        /// 
        ///     Critical calls ProcessInputEventArgs.Reset ( critical as it handles InputManager) 
        ///
        [SecurityCritical] 
        internal override void Reset(StagingAreaInputItem input, InputManager inputManager)
        {
            _canceled = false;
            base.Reset(input, inputManager); 
        }
 
        ///  
        ///     Cancels the processing of the input event.
        ///  
        public void Cancel()
        {
            _canceled = true;
        } 

        ///  
        ///     Whether or not the input event processing was canceled. 
        /// 
        public bool Canceled {get {return _canceled;}} 

        private bool _canceled;
    }
 
    /// 
    ///     Delegate type for handles of events that use 
    ///     . 
    /// 
    public delegate void PreProcessInputEventHandler(object sender, PreProcessInputEventArgs e); 
}


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

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