C# WPF 窗口阴影效果
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WPF window shadow effect
提问by Victor
I am new to WPF technology. I have the following window declaration in WPF:
我是 WPF 技术的新手。我在 WPF 中有以下窗口声明：
<Window x:Class="CustomWindows.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="480" Width="640" ScrollViewer.VerticalScrollBarVisibility="Disabled" WindowStyle="None" AllowsTransparency="True">
<Window.Effect>
<DropShadowEffect BlurRadius="15" Direction="-90" RenderingBias="Quality" ShadowDepth="2"/>
</Window.Effect>
<Grid>
</Grid>
</Window>
But when I run it, the shadow does not appear. What can I do, or where is the misstake?
但是当我运行它时，阴影不会出现。我能做什么，或者错误在哪里？
采纳答案by Federico Berasategui
DropShadowEffectcannot be applied to a Window. Instead, if you want to override the default window appearance, you have to apply the effect to some other element contained in the window:
DropShadowEffect不能应用于Window. 相反，如果要覆盖默认窗口外观，则必须将效果应用于窗口中包含的其他元素：
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" WindowStyle="None" AllowsTransparency="True" Background="Transparent">
<Grid Margin="20" Background="Red">
<Grid.Effect>
<DropShadowEffect BlurRadius="15" Direction="-90" RenderingBias="Quality" ShadowDepth="2"/>
</Grid.Effect>
...
</Grid>
</Window>
