为什么 UWP 不支持 Acrylic Brush？

Question

我已经创建了一个基本的 UWP 应用程序，当我尝试像这样使用亚克力画笔时：

<Page
    x:Class="LearningUWP.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:LearningUWP"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
// Acrylic brush here
    <Page.Resources>
        <media:AcrylicBrush x:Key="HostBackdropBrush"
                            BackgroundSource="HostBackdrop"
                            TintColor="LightBlue"
                            TintOpacity="0.6"
                            FallbackColor="LightSkyBlue"
                            FallbackForced="False" />
    </Page.Resources>
    
    <Grid>

        <Button Content="Synthesize" Margin="528,88,0,0" VerticalAlignment="Top" Height="93" Width="222" Click="Button_Click"/>
        <TextBox x:Name="Text" HorizontalAlignment="Left" Height="145" Margin="39,62,0,0" Text="Hello, World!" TextWrapping="Wrap" VerticalAlignment="Top" Width="389"/>

    </Grid>
</Page>

Visual Studio 表示 Acrylic Brush is not supported in UWP。我是Windows10 1903（这也是我的目标版本），我的最低版本是1803。

Answer 1

我找到了一个方法：

<Page.Resources>
        <ResourceDictionary>
            <ResourceDictionary.ThemeDictionaries>
                <ResourceDictionary x:Key="Default">
                    <AcrylicBrush x:Key="MyAcrylicBrush"
                              BackgroundSource="HostBackdrop"
                              TintColor="Black"
                              TintOpacity="0.5"
                              TintLuminosityOpacity="1"
                              FallbackColor="#111111"
                              />
                </ResourceDictionary>
            </ResourceDictionary.ThemeDictionaries>
        </ResourceDictionary>
    </Page.Resources>

通过将以上代码添加到我的 <Page> 中并设置 <Grid> 背景如下：

<Grid Background="{ThemeResource MyAcrylicBrush}">

其中 MyAcrylicBrush 是 AcrylicBrush 的 x:Key。

Answer 2

Why is Acrylic Brush Not Supported in UWP?

AcrylicBrush is available from 16299, it could work in 1803 min version (17134), your compile error is used media: namespace, but you have not referred WinUI nugget package, and if your mini 1809, you have no need add media namespace. you just give it a x:key and use StaticResource 参考丙烯画笔。

为什么 UWP 不支持 Acrylic Brush？

Why is Acrylic Brush Not Supported in UWP?

c#

xaml

uwp

acrylic-material