File: Core\CSharp\System\Windows\SourceChangedEventHandler.cs
Project: wpf\src\PresentationCore.csproj (PresentationCore)
using System;
 
namespace System.Windows
{
    /// <summary>
    ///     The delegate to use for handlers that receive SourceChangedEventArgs.
    /// </summary>
    public delegate void SourceChangedEventHandler(object sender, SourceChangedEventArgs e);
}