Question

我正在尝试创建一个UWP按钮，当鼠标指针悬停在它上面时会改变背景颜色。我遇到的麻烦是，默认情况下，似乎已经这样做了，但不是我想要的颜色。当我将鼠标悬停在我的按钮（红色）上时，它会变为默认灰色，然后在我鼠标移出时返回。我用C＃编写代码，试图在我将鼠标悬停在它上面时变成蓝色

private void button_PointerEntered_1(object sender, PointerRoutedEventArgs e)
    {
        button.Background = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 0, 0, 255));
    }

    private void button_PointerExited_1(object sender, PointerRoutedEventArgs e)
    {
        button.Background = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 255, 0, 0));
    }

以下是按钮

的XAML代码

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <Button x:Name="button" 
                Content="Button" 
                HorizontalAlignment="Left" 
                Margin="417,188,0,0" 
                VerticalAlignment="Top" 
                Height="230" 
                Width="461" 
                FontSize="72" 
                ManipulationMode="None" 
                PointerEntered="button_PointerEntered_1" 
                PointerExited="button_PointerExited_1">
            <Button.Foreground>
                <SolidColorBrush Color="Black"/>
            </Button.Foreground>
            <Button.Background>
                <SolidColorBrush Color="Red"/>
            </Button.Background>
        </Button>

    </Grid>

Answer 1

您应该覆盖Button样式

<Page.Resources>
    <Style TargetType="Button" x:Key="CustomButtonStyle">
        <Setter Property="Background" Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
        <Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseHighBrush}"/>
        <Setter Property="BorderBrush" Value="{ThemeResource SystemControlForegroundTransparentBrush}" />
        <Setter Property="BorderThickness" Value="{ThemeResource ButtonBorderThemeThickness}" />
        <Setter Property="Padding" Value="8,4,8,4" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" />
        <Setter Property="FontWeight" Value="Normal" />
        <Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" />
        <Setter Property="UseSystemFocusVisuals" Value="True" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Grid x:Name="RootGrid" 
                          Background="{TemplateBinding Background}">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal">
                                    <Storyboard>
                                        <PointerUpThemeAnimation Storyboard.TargetName="RootGrid" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="PointerOver">
                                    <Storyboard>

                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid"
                                                     Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Orange" />
                                        </ObjectAnimationUsingKeyFrames>

                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseMediumLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <PointerUpThemeAnimation Storyboard.TargetName="RootGrid" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid"
                                                     Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlBackgroundBaseMediumLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <PointerDownThemeAnimation Storyboard.TargetName="RootGrid" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid"
                                                     Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
                                                     Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledTransparentBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <ContentPresenter x:Name="ContentPresenter"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}"
                            Content="{TemplateBinding Content}"
                            ContentTransitions="{TemplateBinding ContentTransitions}"
                            ContentTemplate="{TemplateBinding ContentTemplate}"
                            Padding="{TemplateBinding Padding}"
                            HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                            VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
                            AutomationProperties.AccessibilityView="Raw"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Page.Resources>

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
      x:Name="gridRoot">

    <Button Content="stackoverflow"
            Style="{StaticResource CustomButtonStyle}"/>
</Grid>

查看PointerOver状态以及我如何设置Background属性。

Answer 2

2018更新的答案

最简单的方法是覆盖按钮字典中的资源（针对所需主题）
您可以更改名为Button<Property>PointerOver的资源键的值以使效果起作用：

<Button Background="Red" Foreground="Black"> <!-- These are only applied when your button is not being hovered-->
    <Button.Resources>
        <ResourceDictionary>
            <ResourceDictionary.ThemeDictionaries>
                <ResourceDictionary x:Key="Dark">
                    <SolidColorBrush x:Key="ButtonForegroundPointerOver" Color="Red"/>
                    <SolidColorBrush x:Key="ButtonBackgroundPointerOver" Color="Black"/>
                </ResourceDictionary>
                <ResourceDictionary x:Key="Light">
                    <SolidColorBrush x:Key="ButtonForegroundPointerOver" Color="Red"/>
                    <SolidColorBrush x:Key="ButtonBackgroundPointerOver" Color="Black"/>
                </ResourceDictionary>
            </ResourceDictionary.ThemeDictionaries>
        </ResourceDictionary>
    </Button.Resources>
</Button>

Microsoft的官方文档中的

Here is an example on how this is done表示以下结果：

然后在按钮中here is the list of ressources that you can override

Answer 3

作为@Treycos更新的答案的补充，您还可以使用Fluent XAML Theme Editor（也可以在Store上使用），它允许您定义调色板并生成大多数系统资源用于你。

Answer 4

你可以将一个按钮移动到你的网格并左键单击它选择编辑项。然后你会看到样式默认为@Andrii答案。如果你想改变鼠标颜色，你可以改变代码{{ 1}}

<VisualState x:Name="Pressed">

您可以将<ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid" Storyboard.TargetProperty="Background"> <DiscreteObjectKeyFrame KeyTime="0" Value="The new Color" />更改为您的颜色。

当鼠标悬停时，UWP按钮会改变颜色

4 个答案:

2018更新的答案