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Fix MouseWheelEventArgs.Delta from static to an instance readonly field #9947

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Fix MouseWheelEventArgs.Delta from static to an instance readonly field #9947

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085db99
Fix MouseWheelEventArgs.Delta from static to instance field
h3xds1nz Oct 12, 2024
cbe842f
Improve docs for the class
h3xds1nz Oct 12, 2024
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15 changes: 8 additions & 7 deletions src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Input/MouseWheelEventArgs.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,10 @@
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.


using System;

namespace System.Windows.Input
{
/// <summary>
/// The MouseWheelEventArgs describes the state of a Mouse wheel.
/// The <see cref="MouseWheelEventArgs"/> describes the state of a <see cref="Mouse"/> wheel.
/// </summary>
public class MouseWheelEventArgs : MouseEventArgs
{
Expand All @@ -34,7 +31,7 @@ public MouseWheelEventArgs(MouseDevice mouse, int timestamp, int delta) : base(m
/// </summary>
public int Delta
{
get {return _delta;}
get => _delta;
}

/// <summary>
Expand All @@ -49,10 +46,14 @@ public int Delta
/// </param>
protected override void InvokeEventHandler(Delegate genericHandler, object genericTarget)
{
MouseWheelEventHandler handler = (MouseWheelEventHandler) genericHandler;
MouseWheelEventHandler handler = (MouseWheelEventHandler)genericHandler;
handler(genericTarget, this);
}

private static int _delta;
/// <summary>
/// Specifies the delta the mouse wheel has turned.
/// </summary>
private readonly int _delta;

}
}