File: System\Windows\Forms\Input\MouseEventArgs.cs
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Project: src\src\System.Windows.Forms\src\System.Windows.Forms.csproj (System.Windows.Forms)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Drawing;
 
namespace System.Windows.Forms;
 
/// <summary>
///  Provides data for the <see cref="Control.MouseUp"/>, <see cref="Control.MouseDown"/> and
/// <see cref="Control.MouseMove"/> events.
/// </summary>
public class MouseEventArgs : EventArgs
{
    /// <summary>
    ///  Initializes a new instance of the <see cref="MouseEventArgs"/> class.
    /// </summary>
    public MouseEventArgs(MouseButtons button, int clicks, int x, int y, int delta)
    {
        Button = button;
        Clicks = clicks;
        X = x;
        Y = y;
        Delta = delta;
    }
 
    /// <summary>
    ///  Initializes a new instance of the <see cref="MouseEventArgs"/> class.
    /// </summary>
    internal MouseEventArgs(MouseButtons button, int clicks, Point location, int delta = 0)
    {
        Button = button;
        Clicks = clicks;
        X = location.X;
        Y = location.Y;
        Delta = delta;
    }
 
    /// <summary>
    ///  Gets which mouse button was pressed.
    /// </summary>
    public MouseButtons Button { get; }
 
    /// <summary>
    ///  Gets the number of times the mouse button was pressed and released.
    /// </summary>
    public int Clicks { get; }
 
    /// <summary>
    ///  Gets the x-coordinate of a mouse click.
    /// </summary>
    public int X { get; }
 
    /// <summary>
    ///  Gets the y-coordinate of a mouse click.
    /// </summary>
    public int Y { get; }
 
    /// <summary>
    ///  Gets a signed count of the number of detents the mouse wheel has rotated.
    /// </summary>
    public int Delta { get; }
 
    /// <summary>
    ///  Gets the location of the mouse during MouseEvent.
    /// </summary>
    public Point Location => new(X, Y);
}