<Control Width="200" Height="200">

	<Control.Style>

		<Style TargetType="Control">

			<Setter Property="Template">

				<Setter.Value>

					<ControlTemplate TargetType="Control">

						<Grid>

							<!-- Border -->

							<Rectangle Stroke="Red"

									   StrokeThickness="1"

									   Margin="4 4 4 4"

									   StrokeDashArray="4 2" />

							

							<!-- Image -->

							<Image Source="https://zos.alipayobjects.com/rmsportal/ODTLcjxAfvqbxHnVXCYX.png" Margin="5" Stretch="Uniform" />

							<!--Ellipses-->

							<Ellipse Width="10"

									 Height="10"

									 Fill="White"

									 Stroke="Red"

									 StrokeThickness="1"

									 Panel.ZIndex="1"

									 VerticalAlignment="Top"

									 HorizontalAlignment="Left" />

							<Ellipse Width="10"

									 Height="10"

									 Fill="White"

									 Stroke="Red"

									 StrokeThickness="1"

									 Panel.ZIndex="1"

									 VerticalAlignment="Top"

									 HorizontalAlignment="Right" />

							<Ellipse Width="10"

									 Height="10"

									 Fill="White"

									 Stroke="Red"

									 StrokeThickness="1"

									 Panel.ZIndex="1"

									 VerticalAlignment="Bottom"

									 HorizontalAlignment="Left" />

							<Ellipse Width="10"

									 Height="10"

									 Fill="White"

									 Stroke="Red"

									 StrokeThickness="1"

									 Panel.ZIndex="1"

									 VerticalAlignment="Bottom"

									 HorizontalAlignment="Right" />

						</Grid>

					</ControlTemplate>

				</Setter.Value>

			</Setter>

		</Style>

	</Control.Style>

</Control>

using System.Windows;

using System.Windows.Controls;



namespace Antd

{

    [TemplatePart(Name = PART_LeftTop, Type = typeof(UIElement))]

    [TemplatePart(Name = PART_RightTop, Type = typeof(UIElement))]

    public class PhotoFrame : Control

    {

        #region Fields



        private const string PART_LeftTop = "PART_LeftTop";



        private const string PART_RightTop = "PART_RightTop";



        private UIElement leftTop;



        #endregion



        static PhotoFrame()

        {

            DefaultStyleKeyProperty.OverrideMetadata(typeof(PhotoFrame), new FrameworkPropertyMetadata(typeof(PhotoFrame)));

        }



        #region Overrides



        public override void OnApplyTemplate()

        {

            base.OnApplyTemplate();



            leftTop = GetTemplateChild(PART_LeftTop) as UIElement;

            SetEvents();

        }



        private void SetEvents()

        {

            // 这里为已命名的部件，监听鼠标事件并出来，通常监听事件前要把原事件给清理下。

            // 然后为这个控件，定义 Themes，具体样式 就是上面我编写的那个 只不过要给 Ellipse 增加命名，如： x:Name="PART_LeftTop"

        }



        #endregion

    }

}