小编Dur*_*a S的帖子

我想在圆的底部放置一个矩形，如下所示，

但是我无法得到相交点来放置矩形。

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent(); circleHeight = (circleWidth / 3) * 2;
        this.panel1.Paint += Panel1_Paint;
    }
    int circleWidth = 314;
    int circleHeight;
    int FrameThickness = 12;
    private void Panel1_Paint(object sender, PaintEventArgs e)
    {
        e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
        e.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
        GraphicsPath pth = new GraphicsPath();
        System.Drawing.Drawing2D.GraphicsPath basePath = new System.Drawing.Drawing2D.GraphicsPath();

        int x = this.circleWidth;

        int rectWidth = (int)Math.Ceiling(this.circleWidth * 0.94); // 94 % of the actual circle width            
        int rectRimWidth = rectWidth - …

我尝试通过在将控件添加到 UI 的同时将样式资源合并到应用程序资源来为我的自定义控件应用新样式，但新样式并未首次应用于控件。

样品控制

CustomTextBoxExt.cs

 public class CustomTextBoxExt : TextBox
    {
        static CustomTextBoxExt()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomTextBoxExt), new FrameworkPropertyMetadata(typeof(CustomTextBoxExt)));
        }
    }

默认样式 Generic.xaml

 <Style x:Key="TextBoxExtStyle" TargetType="{x:Type local:CustomTextBoxExt}">
    <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}" />
    <Setter Property="BorderBrush" Value="Red" />
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" />
    <Setter Property="BorderThickness" Value="1" />
    <Setter Property="KeyboardNavigation.TabNavigation" Value="None" />
    <Setter Property="HorizontalContentAlignment" Value="Left" />
    <Setter Property="FocusVisualStyle" Value="{x:Null}" />
    <Setter Property="AllowDrop" Value="True" />
    <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst" />
    <Setter Property="Stylus.IsFlicksEnabled" Value="False" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:CustomTextBoxExt}">
                <Border
                    x:Name="border"
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding …