我正在尝试为 Windows phone 8 的播放器框架媒体播放器实现黑暗主题，但我似乎无法使某些东西起作用。
我正在通过添加模板来更改可搜索滑块的样式（就像在 win8 版本中一样，效果很好），但是在 wp8 上我可以看到滑块拇指，但它不会移动，并且矩形用于填充条不显示。
这是可搜索滑块样式的代码：
<Style TargetType="mmppf:SeekableSlider" x:Key="Dark_SeekableSlider">
<Setter Property="IsTabStop" Value="True" />
<Setter Property="Padding" Value="0" />
<Setter Property="Background" Value="{StaticResource Dark_SliderTrackBackgroundThemeBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource Dark_SliderBorderThemeBrush}" />
<Setter Property="BorderThickness" Value="{StaticResource Dark_SliderBorderThemeThickness}" />
<Setter Property="Foreground" Value="{StaticResource Dark_SliderTrackDecreaseBackgroundThemeBrush}" />
<Setter Property="SliderTrackDecreasePressedBackground" Value="{StaticResource Dark_SliderTrackDecreasePressedBackgroundThemeBrush}" />
<Setter Property="SliderTrackPressedBackground" Value="{StaticResource Dark_SliderTrackPressedBackgroundThemeBrush}" />
<Setter Property="SliderThumbPressedBackground" Value="{StaticResource Dark_SliderThumbPressedBackgroundThemeBrush}" />
<Setter Property="SliderThumbPressedBorder" Value="{StaticResource Dark_SliderThumbPressedBorderThemeBrush}" />
<Setter Property="SliderDisabledBorder" Value="{StaticResource Dark_SliderDisabledBorderThemeBrush}" />
<Setter Property="SliderTrackDecreaseDisabledBackground" Value="{StaticResource Dark_SliderTrackDecreaseDisabledBackgroundThemeBrush}" />
<Setter Property="SliderTrackDisabledBackground" Value="{StaticResource Dark_SliderTrackDisabledBackgroundThemeBrush}" />
<Setter Property="SliderThumbDisabledBackground" Value="{StaticResource Dark_SliderThumbDisabledBackgroundThemeBrush}" />
<Setter Property="SliderTrackDecreasePointerOverBackground" Value="{StaticResource Dark_SliderTrackDecreasePointerOverBackgroundThemeBrush}" />
<Setter Property="SliderTrackPointerOverBackground" Value="{StaticResource Dark_SliderTrackPointerOverBackgroundThemeBrush}" />
<Setter Property="SliderThumbPointerOverBackground" Value="{StaticResource Dark_SliderThumbPointerOverBackgroundThemeBrush}" />
<Setter Property="SliderThumbPointerOverBorder" Value="{StaticResource Dark_SliderThumbPointerOverBorderThemeBrush}" />
<Setter Property="SliderThumbBackground" Value="{StaticResource Dark_SliderThumbBackgroundThemeBrush}" />
<Setter Property="SliderThumbStyle">
<Setter.Value>
<Style TargetType="Thumb">
<Setter Property="BorderThickness" Value="1" />
<Setter Property="BorderBrush" Value="{StaticResource Dark_SliderThumbBorderThemeBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Thumb">
<Border Background="{TemplateBinding Background}" Height="{StaticResource Dark_SliderTrackThemeHeight}" Width="{StaticResource Dark_SliderTrackThemeHeight}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="mmppf:SeekableSlider">
<Grid x:Name="LayoutRoot">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreasePressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackPressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPressedBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreasePressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackPressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPressedBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPressedBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalBorder" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderDisabledBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalBorder" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderDisabledBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreaseDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreaseDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbDisabledBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreasePointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackPointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPointerOverBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackDecreasePointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderTrackPointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPointerOverBackground, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding SliderThumbPointerOverBorder, RelativeSource={RelativeSource TemplatedParent}}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="FocusVisualWhite" Storyboard.TargetProperty="Opacity" To="1" Duration="0" />
<DoubleAnimation Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Opacity" To="1" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused" />
<VisualState x:Name="PointerFocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="HorizontalTemplate" Visibility="Collapsed">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ContentPresenter x:Name="HorizontalBackgroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding HorizontalBackgroundContent}" Grid.ColumnSpan="3" Grid.RowSpan="3" />
<Rectangle x:Name="HorizontalTrackRect" Margin="{TemplateBinding Padding}" Grid.Row="1" Fill="{TemplateBinding Background}" Grid.Column="0" Grid.ColumnSpan="3" IsHitTestVisible="False" />
<Rectangle x:Name="HorizontalDecreaseRect" Margin="{TemplateBinding Padding}" Grid.Row="1" Fill="{TemplateBinding Foreground}" Grid.Column="0" IsHitTestVisible="False" />
<Rectangle x:Name="HorizontalBorder" Margin="{TemplateBinding Padding}" Grid.RowSpan="3" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="{TemplateBinding BorderThickness}" Grid.ColumnSpan="3" IsHitTestVisible="False" />
<Border x:Name="HorizontalAvailableBar" Grid.RowSpan="3" Grid.ColumnSpan="3" HorizontalAlignment="Left" IsHitTestVisible="True" Background="#00000000" />
<ContentPresenter Visibility="Visible" x:Name="HorizontalForegroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding HorizontalForegroundContent}" Grid.ColumnSpan="3" Grid.RowSpan="3" />
<Thumb x:Name="HorizontalThumb" Background="{TemplateBinding SliderThumbBackground}" Style="{TemplateBinding SliderThumbStyle}" DataContext="{TemplateBinding Value}" Grid.Row="1" Grid.Column="1" Height="{StaticResource Dark_SliderTrackThemeHeight}" Width="{StaticResource Dark_SliderTrackThemeHeight}"/>
</Grid>
<Grid x:Name="VerticalTemplate">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="VerticalBackgroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding VerticalBackgroundContent}" Grid.ColumnSpan="3" Grid.RowSpan="3" />
<Rectangle x:Name="VerticalTrackRect" Margin="{TemplateBinding Padding}" Grid.Column="1" Fill="{TemplateBinding Background}" Grid.Row="0" Grid.RowSpan="3" IsHitTestVisible="False" />
<Rectangle x:Name="VerticalDecreaseRect" Margin="{TemplateBinding Padding}" Grid.Column="1" Fill="{TemplateBinding Foreground}" Grid.Row="2" IsHitTestVisible="False" />
<Rectangle x:Name="VerticalBorder" Margin="{TemplateBinding Padding}" Grid.ColumnSpan="3" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="{TemplateBinding BorderThickness}" Grid.RowSpan="3" IsHitTestVisible="False" />
<Border x:Name="VerticalAvailableBar" Grid.ColumnSpan="3" Grid.RowSpan="3" VerticalAlignment="Bottom" IsHitTestVisible="True" Background="#00000000" />
<ContentPresenter x:Name="VerticalForegroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding VerticalForegroundContent}" Grid.ColumnSpan="3" Grid.RowSpan="3" />
<Thumb x:Name="VerticalThumb" Background="{TemplateBinding SliderThumbBackground}" Style="{TemplateBinding SliderThumbStyle}" DataContext="{TemplateBinding Value}" Grid.Row="1" Grid.Column="1" Height="{StaticResource Dark_SliderTrackThemeHeight}" Width="{StaticResource Dark_SliderTrackThemeHeight}"/>
</Grid>
<Rectangle x:Name="FocusVisualWhite" IsHitTestVisible="False" Stroke="{StaticResource Dark_FocusVisualWhiteStrokeThemeBrush}" StrokeEndLineCap="Square" StrokeDashArray="1,1" Opacity="0" StrokeDashOffset="1.5" Margin="-5" />
<Rectangle x:Name="FocusVisualBlack" IsHitTestVisible="False" Stroke="{StaticResource Dark_FocusVisualBlackStrokeThemeBrush}" StrokeEndLineCap="Square" StrokeDashArray="1,1" Opacity="0" StrokeDashOffset="0.5" Margin="-5" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
是wp8不能处理同一个主题吗？尽管在播放器框架站点上，它是 Windows 8 和 Windows phone 8 的相同示例主题。
使用了这些模板：
<Grid x:Name="HorizontalTemplate">
<ContentPresenter x:Name="HorizontalBackgroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding HorizontalBackgroundContent}"/>
<Rectangle x:Name="HorizontalTrack" Margin="{TemplateBinding Padding}" Fill="{TemplateBinding Background}" IsHitTestVisible="False" />
<Rectangle x:Name="HorizontalFill" Margin="{TemplateBinding Padding}" Fill="{TemplateBinding Foreground}" IsHitTestVisible="False">
<Rectangle.Clip>
<RectangleGeometry Rect="0, 0, 6, 15"/>
</Rectangle.Clip>
</Rectangle>
<Border x:Name="HorizontalAvailableBar" HorizontalAlignment="Left" IsHitTestVisible="True" Background="#00000000" />
<ContentPresenter x:Name="HorizontalForegroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding HorizontalForegroundContent}"/>
<Rectangle x:Name="HorizontalCenterElement" Fill="{TemplateBinding SliderThumbBackground}" DataContext="{TemplateBinding Value}" HorizontalAlignment="Left" Width="{StaticResource Dark_SliderTrackThemeHeight}">
<Rectangle.RenderTransform>
<TranslateTransform/>
</Rectangle.RenderTransform>
</Rectangle>
</Grid>
<Grid x:Name="VerticalTemplate" Visibility="Collapsed">
<ContentPresenter x:Name="VerticalBackgroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding VerticalBackgroundContent}"/>
<Rectangle x:Name="VerticalTrack" Margin="{TemplateBinding Padding}" Fill="{TemplateBinding Background}" IsHitTestVisible="False" Width="{StaticResource Dark_SliderTrackThemeHeight}"/>
<Rectangle x:Name="VerticalFill" Margin="{TemplateBinding Padding}" Fill="{TemplateBinding Foreground}" IsHitTestVisible="False" Width="{StaticResource Dark_SliderTrackThemeHeight}">
<Rectangle.Clip>
<RectangleGeometry Rect="0, 0, 15, 6"/>
</Rectangle.Clip>
</Rectangle>
<Border x:Name="VerticalAvailableBar" VerticalAlignment="Bottom" IsHitTestVisible="True" Background="#00000000" />
<ContentPresenter x:Name="VerticalForegroundContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding VerticalForegroundContent}"/>
<Rectangle x:Name="VerticalCenterElement" Fill="{TemplateBinding SliderThumbBackground}" DataContext="{TemplateBinding Value}" VerticalAlignment="Top" Height="{StaticResource Dark_SliderTrackThemeHeight}">
<Rectangle.RenderTransform>
<TranslateTransform/>
</Rectangle.RenderTransform>
</Rectangle>
</Grid>