DragMove（）将使与Cornerradius的边界失去其鼠标扳机状态？

Question

我创建了一个带有圆角的无边界窗口，并在其中添加了阻力事件和扳机。这是简单的代码：

<Window x:Class="DebugTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:DebugTest"
        mc:Ignorable="d" Height="200" Width="200"
        AllowsTransparency="True" WindowStyle="None" Background="Transparent">
    <Border x:Name="MainBorder" CornerRadius="15" Background="White" BorderBrush="Black" BorderThickness="1">
        <Grid>
            <Grid.Style>
                <Style TargetType="Grid">
                    <Setter Property="Visibility" Value="Hidden" />
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding ElementName=MainBorder,Path=IsMouseOver}" Value="True">
                            <Setter Property="Visibility" Value="Visible"/>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </Grid.Style>
            <Button Content="x" HorizontalAlignment="Right" VerticalAlignment="Top" 
                    Margin="5" Height="20" Width="20" Click="Button_Click"/>
        </Grid>
    </Border>
</Window>

        public MainWindow()
        {
            InitializeComponent();
        }
        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
        {
            base.OnMouseLeftButtonDown(e);
            this.DragMove();
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }

但是，当我运行EXE文件时，单击窗口内的空白区域时，该按钮将显而易见。

奇怪的是，这种情况几乎不会发生在Visual Studio中的调试而不是双击文件时，并且在Cornerradius =“ 0”时也不会发生这种情况。

它看起来像在单击时丢失了鼠标触发器，但是我想不出任何避免闪烁出现的好方法，并满足圆角， draggable 强>，并带有触发。

Answer 1

好吧，尽管我不知道为什么只有圆角会导致DragMove（）触发Mouseleave事件，但我用背景代码绕过它，而不是使用XAML触发器。

    <Border x:Name="MainBorder" CornerRadius="15" Background="White" 
            BorderBrush="Black" BorderThickness="1"
            MouseEnter="MainBorder_MouseEnter" MouseLeave="MainBorder_MouseLeave">
        <Grid Visibility="Hidden" x:Name="TriggerBorder">
            <Button Content="x" HorizontalAlignment="Right" VerticalAlignment="Top" 
                    Margin="5" Height="20" Width="20" Click="Button_Click"/>
        </Grid>
    </Border>

        bool dragMoving = false;
        public MainWindow()
        {
            InitializeComponent();
        }        
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }       
        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
        {
            base.OnMouseLeftButtonDown(e);
            dragMoving = true;
            this.DragMove();
            dragMoving = false;
        }
        private void MainBorder_MouseEnter(object sender, MouseEventArgs e)
        {
            TriggerBorder.Visibility = Visibility.Visible;
        }

        private void MainBorder_MouseLeave(object sender, MouseEventArgs e)
        {
            if (dragMoving) return;
            TriggerBorder.Visibility = Visibility.Hidden;
        }

似乎正常。