如何修改MAUI中Slider的悬停颜色？

我正在开发一款功能增强型音频播放器，Slider是UI核心组件。但无法修改Slider悬停时已走过轨道的颜色（因色盲推测为蓝色）。

尝试过的无效方案 #

全局样式表重写VisualState #

在全局样式中重写Slider所有状态属性，无效果：

<Style TargetType="Slider">
        <Setter Property="VisualStateManager.VisualStateGroups">
            <VisualStateGroupList>
                <VisualStateGroup x:Name="CommonStates">
                    <VisualState x:Name="Normal">
                        <VisualState.Setters>
                            <Setter Property="BackgroundColor" Value="Red" />
                            <Setter Property="MinimumTrackColor" Value="Red" />
                            <Setter Property="MaximumTrackColor" Value="Red" />
                            <Setter Property="ThumbColor" Value="Red" />
                        </VisualState.Setters>
                    </VisualState>
                    <VisualState x:Name="PointerOver">
                        <VisualState.Setters>
                            <Setter Property="BackgroundColor" Value="Red" />
                            <Setter Property="MinimumTrackColor" Value="Red" />
                            <Setter Property="MaximumTrackColor" Value="Red" />
                            <Setter Property="ThumbColor" Value="Red" />
                        </VisualState.Setters>
                    </VisualState>
                    <VisualState x:Name="Selected">
                        <VisualState.Setters>
                            <Setter Property="BackgroundColor" Value="Red" />
                            <Setter Property="MinimumTrackColor" Value="Red" />
                            <Setter Property="MaximumTrackColor" Value="Red" />
                            <Setter Property="ThumbColor" Value="Red" />
                        </VisualState.Setters>
                    </VisualState>
                    <VisualState x:Name="Focused">
                        <VisualState.Setters>
                            <Setter Property="BackgroundColor" Value="Red" />
                            <Setter Property="MinimumTrackColor" Value="Red" />
                            <Setter Property="MaximumTrackColor" Value="Red" />
                            <Setter Property="ThumbColor" Value="Red" />
                        </VisualState.Setters>
                    </VisualState>
                </VisualStateGroup>
            </VisualStateGroupList>
        </Setter>
    </Style>

Windows平台App.xaml重写WinUI Slider属性 #

在Platform\Windows\app.xaml中重写WinUI的Slider属性，同样无效：

<maui:MauiWinUIApplication
    x:Class="MPC.MForms.WinUI.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:maui="using:Microsoft.Maui"
    xmlns:local="using:MPC.MForms.WinUI">
    <maui:MauiWinUIApplication.Resources>
        <Style TargetType="Slider">
            <Setter Property="BorderBrush" Value="Red"/>
            <Setter Property="Background" Value="Red"/>
            <Setter Property="Foreground" Value="Red"/>
            <Setter Property="FocusVisualPrimaryBrush" Value="Red"/>
            <Setter Property="FocusVisualSecondaryBrush" Value="Red"/>
        </Style>
    </maui:MauiWinUIApplication.Resources>
</maui:MauiWinUIApplication>

有效解决方案 #

在Platforms\Windows\App.xaml文件中，通过重写WinUI的SliderTrackValueFillPointerOver颜色资源，即可修改Slider悬停时已走过轨道的颜色：

<maui:MauiWinUIApplication.Resources>
    <Color x:Key="SliderTrackValueFillPointerOver">Red</Color>
</maui:MauiWinUIApplication.Resources>

内容的提问来源于stack exchange，提问作者Olograph