File: System\Windows\Forms\Controls\MonthCalendar\MonthCalendar.HitTestInfo.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.
 
namespace System.Windows.Forms;
 
public partial class MonthCalendar
{
    /// <summary>
    ///  HitTestInfo objects are returned by MonthCalendar in response to the hitTest method.
    ///  HitTestInfo is for informational purposes only; the user should not construct these objects, and
    ///  cannot modify any of the members.
    /// </summary>
    public sealed class HitTestInfo
    {
        internal HitTestInfo(Point pt, HitArea area, DateTime time)
        {
            Point = pt;
            HitArea = area;
            Time = time;
        }
 
        /// <summary>
        ///  This constructor is used when the DateTime member is invalid.
        /// </summary>
        internal HitTestInfo(Point pt, HitArea area)
        {
            Point = pt;
            HitArea = area;
        }
 
        /// <summary>
        ///  The point that was hit-tested
        /// </summary>
        public Point Point { get; }
 
        /// <summary>
        ///  Output member that receives an enumeration value from System.Windows.Forms.MonthCalendar.HitArea
        ///  representing the result of the hit-test operation.
        /// </summary>
        public HitArea HitArea { get; }
 
        /// <summary>
        ///  The time information specific to the location that was hit-tested. This value
        ///  will only be valid at certain values of hitArea.
        /// </summary>
        public DateTime Time { get; }
 
        /// <summary>
        ///  Determines whether a given HitArea should have a corresponding valid DateTime
        /// </summary>
        internal static bool HitAreaHasValidDateTime(HitArea hitArea) =>
            // ComCtl does not provide a valid date for DayOfWeek.
            hitArea switch
            {
                HitArea.Date or HitArea.WeekNumbers => true,
                _ => false,
            };
    }
}