XplorePlane/ImageROIControl/ControlThumb.cs

using System;
using System.Windows;
using System.Windows.Controls.Primitives;

namespace ImageROIControl
{
    /// <summary>
    /// ROI控制点
    /// </summary>
    public class ControlThumb : Thumb
    {
        private static readonly Style? thumbStyle;

        static ControlThumb()
        {
            try
            {
                ResourceDictionary dictionary = new ResourceDictionary();
                dictionary.Source = new Uri("pack://application:,,,/ImageROIControl;component/Themes/Generic.xaml", UriKind.Absolute);
                thumbStyle = (Style?)dictionary["AreaControlThumbStyle"];
            }
            catch
            {
                // 如果样式加载失败，使用默认样式
                thumbStyle = null;
            }
        }

        public ControlThumb()
        {
            if (thumbStyle != null)
            {
                Style = thumbStyle;
            }
            else
            {
                // 默认样式
                Width = 12;
                Height = 12;
            }
        }
    }
}