UWP主题和样式：Highcontrast主题不使用正确的颜色

Question

我的应用程序以“Light”内置主题运行。

每当我的应用程序运行时切换到另一个高对比度主题，某些颜色会得到不正确的值。

例如，当我的应用程序运行时，当我从无主题切换到HighContrastBlack时，我得到HighContrastWhite中定义的颜色......

当我在Windows设置中切换主题后重新启动应用程序时，没有问题。

只有使用未使用ThemeResource作为颜色的画笔才会发生这种情况。例如FileExplorerBorderBrush。

使用“ThemeResource”代替“StaticResource”对画笔进行引用，所以这也不是问题

的App.xaml：

<Application
x:Class="My_App.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:My_App"
RequestedTheme="Light">

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Styles/SplitViewStyles.xaml" />
            <ResourceDictionary Source="Styles/PageStyles.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

PageStyles.xaml：

<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:My_App.Styles">

<ResourceDictionary.ThemeDictionaries>
    <ResourceDictionary x:Key="Default">
        <SolidColorBrush x:Key="PageBackgroundBrush" Color="{ThemeResource PageBackgroundColor}" />
        <SolidColorBrush x:Key="BlueAccentColorBrush" Color="{ThemeResource BlueAccentColor}" />
        <SolidColorBrush x:Key="OrangeAccentColorBrush" Color="{ThemeResource OrangeAccentColor}" />
        <SolidColorBrush x:Key="LabelTextColorBrush" Color="{ThemeResource LabelTextColor}" />
        <SolidColorBrush x:Key="AppHeaderColorBrush" Color="{ThemeResource BlueAccentColor}" />
        <SolidColorBrush x:Key="FileExplorerBorderBrush" Color="{ThemeResource BlueAccentColor}" />
        <SolidColorBrush x:Key="PaneBackgroundBrush" Color="WhiteSmoke" />
        <SolidColorBrush x:Key="SettingsPageBackgroundBrush" Color="White" />
        <SolidColorBrush x:Key="TopBarDividerLineBrush" Color="#3a3a3a" />
    </ResourceDictionary>
    <ResourceDictionary x:Key="HighContrastCustom">
        <SolidColorBrush x:Key="PageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="BlueAccentColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="OrangeAccentColorBrush" Color="Orange" />
        <SolidColorBrush x:Key="LabelTextColorBrush" Color="{ThemeResource SystemColorWindowTextColor}" />
        <SolidColorBrush x:Key="AppHeaderColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="FileExplorerBorderBrush" Color="Blue" />
        <SolidColorBrush x:Key="PaneBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="SettingsPageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="TopBarDividerLineBrush" Color="Blue" />
    </ResourceDictionary>
    <ResourceDictionary x:Key="HighContrastBlack">
        <SolidColorBrush x:Key="PageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="BlueAccentColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="OrangeAccentColorBrush" Color="Orange" />
        <SolidColorBrush x:Key="LabelTextColorBrush" Color="{ThemeResource SystemColorWindowTextColor}" />
        <SolidColorBrush x:Key="AppHeaderColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="FileExplorerBorderBrush" Color="Yellow" />
        <SolidColorBrush x:Key="PaneBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="SettingsPageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="TopBarDividerLineBrush" Color="Yellow" />
    </ResourceDictionary>
    <ResourceDictionary x:Key="HighContrastWhite">
        <SolidColorBrush x:Key="PageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="BlueAccentColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="OrangeAccentColorBrush" Color="Orange" />
        <SolidColorBrush x:Key="LabelTextColorBrush" Color="{ThemeResource SystemColorWindowTextColor}" />
        <SolidColorBrush x:Key="AppHeaderColorBrush" Color="Blue" />
        <SolidColorBrush x:Key="FileExplorerBorderBrush" Color="Blue" />
        <SolidColorBrush x:Key="PaneBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="SettingsPageBackgroundBrush" Color="{ThemeResource SystemColorWindowColor}" />
        <SolidColorBrush x:Key="TopBarDividerLineBrush" Color="Blue" />
    </ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>