如何在悬停和点击时更改按钮的背景图像？ Visual Studio的UI似乎没有提供任何简单的方法。目前，默认行为似乎用纯色替换我的图像，这看起来很糟糕。
到目前为止我所拥有的只是按钮基础：
<Button Content="" Height="75" VerticalAlignment="Center" Width="75" HorizontalAlignment="Center" ClickMode="Press">
<Button.Background>
<ImageBrush ImageSource="../data/images/icons/skill_icon_0.png"/>
</Button.Background>
</Button>
我尝试处理事件并手动设置它，但它不适用于Pressed / Released：
Button skillButton = new Button();
skillButton.Width = 75;
skillButton.Height = 75;
skillButton.ClickMode = ClickMode.Press;
skillButton.Background = GetIconImage(iconIndex, 0);
skillButton.PointerEntered +=
(object sender, Windows.UI.Xaml.Input.PointerEventArgs e) => {
skillButton.Background = GetIconImage(iconIndex, 1);
};
skillButton.PointerExited +=
(object sender, Windows.UI.Xaml.Input.PointerEventArgs e) => {
skillButton.Background = GetIconImage(iconIndex, 0);
};
skillButton.PointerPressed +=
(object sender, Windows.UI.Xaml.Input.PointerEventArgs e) => {
skillButton.Background = GetIconImage(iconIndex, 2);
};
skillButton.PointerReleased +=
(object sender, Windows.UI.Xaml.Input.PointerEventArgs e) => {
if (skillButton.FocusState == FocusState.Pointer)
skillButton.Background = GetIconImage(iconIndex, 1);
else skillButton.Background = GetIconImage(iconIndex, 0);
};
答案 0 :(得分：6)
我最终编辑ControlTemplate只是为了创建和更改边框。但它也可以用来改变图像。
<Button Width="75" Height="75" ClickMode="Press">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border x:Name="RootElement" CornerRadius="10" BorderThickness="2">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition To="MouseOver" GeneratedDuration="0:0:0.1"/>
<VisualTransition To="Pressed" GeneratedDuration="0:0:0.1"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Storyboard.TargetName="BorderBrush"
Storyboard.TargetProperty="Color"
To="Yellow" />
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ColorAnimation Storyboard.TargetName="BorderBrush"
Storyboard.TargetProperty="Color"
To="Black"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border.BorderBrush>
<SolidColorBrush x:Name="BorderBrush" Color="White"/>
</Border.BorderBrush>
<Border.Background>
<ImageBrush ImageSource="ms-appx:/data/images/icons/skill_icon_0.png"/>
</Border.Background>
</Border>
</ControlTemplate>
</Button.Template>
</Button>
答案 1 :(得分：5)
你几乎就在那里。您可以随时在文字/内容下方的图片顶部应用半透明颜色，但由于您要求更改整个图像，以下是您可以执行的操作：
在Visual Studio 2012中，如果您已经有一个按钮，其大部分样式/配置为您想要的，请右键单击它，编辑模板 - ＆gt;编辑副本。选择要放置新样式/模板的位置。这就像选择放置CSS的位置一样。可以位于全局文件（App.xaml或StandardStyle.xaml）或标题（页面资源）或内联（控制资源）中。
下面的XAML可能过于简化而无法正常工作，但这是它的想法：
<ControlTemplate x:Key="MyButton" TargetType="Button">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HoverBackground"
Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PressedBackground"
Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
[...]
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
[...]
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="Border" [...]>
<Grid>
<Image Source="[...]" Stretch="None" />
<Image x:Name="HoverBackground" Source="[...]" Visibility="Collapsed" />
<Image x:Name="PressedBackground" Source="[...]" Visibility="Collapsed" />
<ContentPresenter x:Name="ContentPresenter"
Content="{TemplateBinding Content}"
ContentTransitions="{TemplateBinding ContentTransitions}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="{TemplateBinding Padding}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
[...]/>
</Grid>
</Border>
[...]
</Grid>
</ControlTemplate>
现在，您可以将3张图片放在3个<Image>标记中，并且由于ContentPresenter位于顶部，当您将模板与<Button Template="{StaticResource MyButton}">一起使用时，您仍然可以将内容放入其中并显示在背景图片的顶部。或者您也可以使用带有图像的完全图形按钮。
答案 2 :(得分：3)
Windows UI XAML工具包现在具有此功能：
Image Button and Toggle Image Button
在visual studio 2012中使用软件包管理器控制台命令“Install-Package winrtxamltoolkit”来安装工具包......这对许多事情都非常有用。
答案 3 :(得分：2)
这是一种可以打开和关闭您在Blend中添加的一些额外图像的可见性的样式。图像是透明的，并通过使用“发送到后面”来到按钮背景图像的后面..换句话说，您可以继续使用不同的背景图像画笔为每个按钮，以及交换的正常，指针和按下图像。所以两个背景图像重叠。
<Style x:Key="qButtonStyle" TargetType="Button">
<Setter Property="Background" Value="{StaticResource ButtonBackgroundThemeBrush}" />
<Setter Property="Foreground" Value="{StaticResource ButtonForegroundThemeBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource ButtonBorderThemeBrush}" />
<Setter Property="BorderThickness" Value="{StaticResource ButtonBorderThemeThickness}" />
<Setter Property="Padding" Value="4" />
<Setter Property="HorizontalAlignment" Value="Left" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="FontFamily" Value="{StaticResource ContentControlThemeFontFamily}" />
<Setter Property="FontWeight" Value="SemiBold" />
<Setter Property="FontSize" Value="{StaticResource ControlContentThemeFontSize}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid x:Name="grid">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" >
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="imageNormal" d:IsOptimized="True"/>
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush)" Storyboard.TargetName="Border">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Null}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderThickness)" Storyboard.TargetName="Border">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Thickness>0</Thickness>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="imageNormal">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="imagePressed">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="imagePointer" d:IsOptimized="True"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background"
Storyboard.TargetName="Border"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="ContentPresenter"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush)" Storyboard.TargetName="Border">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Null}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="FocusVisualWhite">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#7F006400"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="FocusVisualBlack">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#7F006400"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="imagePressed" d:IsOptimized="True"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="imagePointer" d:IsOptimized="True"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="imageNormal">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="imagePointer">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="0.25" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="grid" d:IsOptimized="True"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity"
Storyboard.TargetName="FocusVisualWhite" />
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity"
Storyboard.TargetName="FocusVisualBlack" />
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused" />
<VisualState x:Name="PointerFocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Image x:Name="imagePointer" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Source="ms-appx:///Assets/btnBGPointer.png" Opacity="0"/>
<Image x:Name="imagePressed" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Source="ms-appx:///Assets/btnBGPressed.png" Opacity="0"/>
<Image x:Name="imageNormal" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Source="ms-appx:///Assets/bgButtonBase.png"/>
<Border x:Name="Border"
Background="{TemplateBinding Background}" Margin="3">
<ContentPresenter x:Name="ContentPresenter"
ContentTemplate="{TemplateBinding ContentTemplate}"
ContentTransitions="{TemplateBinding ContentTransitions}"
Content="{TemplateBinding Content}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Border>
<Rectangle x:Name="FocusVisualWhite" IsHitTestVisible="False" Opacity="0"
StrokeDashOffset="1.5" StrokeEndLineCap="Square"
Stroke="{StaticResource FocusVisualWhiteStrokeThemeBrush}" StrokeDashArray="1,1" />
<Rectangle x:Name="FocusVisualBlack" IsHitTestVisible="False" Opacity="0"
StrokeDashOffset="0.5" StrokeEndLineCap="Square"
Stroke="{StaticResource FocusVisualBlackStrokeThemeBrush}" StrokeDashArray="1,1" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
答案 4 :(得分：1)
在按钮上的Pointer_Entered事件中使用此代码，它将起作用：）
private void Button_PointerEntered_1(object sender, PointerEventArgs e)
{
BitmapImage bmp = new BitmapImage();
Uri u = new Uri("ms-appx:/Images/Shapes/blueball.png", UriKind.RelativeOrAbsolute);
bmp.UriSource = u;
ImageBrush i = new ImageBrush();
i.ImageSource=bmp;
button.Background= i;
}
答案 5 :(得分：0)
PointerPressed / PointerReleased的+ =在原始代码中不起作用的原因是因为Button（实际上是ButtonBase）类处理这些事件。那是因为它们被整合到Click事件中（在Release上）。如果你使用了带有第一个参数PointerPressedEvent的skillButton.AddHandler，第二个param对命名处理程序的新处理程序引用，以及第三个param为true，则可能使用PointerPressed而不是Entered / Exited作为事件。