这是我的代码:
<StackPanel>
<StackPanel.Resources>
<Style x:Key="stlNavButtonBorder" TargetType="Border">
<Setter Property="BorderBrush" Value="#570000FF" />
<Setter Property="BorderThickness" Value="5" />
<Setter Property="Height" Value="100" />
<Setter Property="Width" Value="200" />
<Setter Property="Margin" Value="10" />
<Style.Triggers>
<EventTrigger RoutedEvent="MouseEnter">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
Storyboard.TargetProperty="BorderBrush.Color"
To="blue"
Duration="0:0:0.25"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="MouseLeave">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
Storyboard.TargetProperty="BorderBrush.Color"
To="#570000FF"
Duration="0:0:0.25" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="MouseDown">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
Storyboard.TargetProperty="BorderBrush.Color"
To="Black"
Duration="0:0:0.25" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Style.Triggers>
</Style>
<Style x:Key="stlNavButtonRectangle" TargetType="Rectangle">
<Setter Property="Fill" Value="#570000FF"/>
</Style>
<Style TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Style="{StaticResource stlNavButtonBorder}">
<Grid>
<Rectangle Style="{StaticResource stlNavButtonRectangle}"/>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</StackPanel.Resources>
<Button Content="Button 1" />
<Button Content="Button 2"/>
<Button Content="Button 3" />
</StackPanel>
它生成那些按钮:
问题是,当鼠标在按钮上按下时,边框不会像我在 MouseDown
事件触发器中尝试做的那样从蓝色变为黑色,而是消失了,这是 MouseLeave
事件触发器。
如何解决?谢谢。
最佳答案
我找不到潜在的问题。如果我没记错的话,MouseDown
事件会被 Button
的 Click
事件吞没。不管怎样,我希望下面的代码能帮助您解决这个问题。
更新:
这里是更新后的代码,即使在 IsPressed
被触发后,它也会保持 MouseLeave
触发。
<StackPanel>
<StackPanel.Resources>
<Style x:Key="stlNavButtonBorder" TargetType="Border">
<Setter Property="BorderBrush" Value="#570000FF" />
<Setter Property="BorderThickness" Value="5" />
<Setter Property="Height" Value="100" />
<Setter Property="Width" Value="200" />
<Setter Property="Margin" Value="10" />
</Style>
<Style x:Key="stlNavButtonRectangle" TargetType="Rectangle">
<Setter Property="Fill" Value="#570000FF"/>
</Style>
<Style TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Style="{StaticResource stlNavButtonBorder}" x:Name="border">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.2"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="Pressed">
<Storyboard>
<ColorAnimation Storyboard.TargetProperty="(BorderBrush).(SolidColorBrush.Color)"
To="Black"/>
</Storyboard>
</VisualState>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Storyboard.TargetProperty="(BorderBrush).(SolidColorBrush.Color)"
To="Blue"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid>
<Rectangle Style="{StaticResource stlNavButtonRectangle}"/>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</StackPanel.Resources>
<Button Content="Button 1" />
<Button Content="Button 2"/>
<Button Content="Button 3" />
</StackPanel>
除了点击按钮后,当我们离开按钮时鼠标进入后,它仍然是黑色的。
<StackPanel>
<StackPanel.Resources>
<Style x:Key="stlNavButtonBorder" TargetType="Border">
<Setter Property="BorderBrush" Value="#570000FF" />
<Setter Property="BorderThickness" Value="5" />
<Setter Property="Height" Value="100" />
<Setter Property="Width" Value="200" />
<Setter Property="Margin" Value="10" />
</Style>
<Style x:Key="stlNavButtonRectangle" TargetType="Rectangle">
<Setter Property="Fill" Value="#570000FF"/>
</Style>
<Style TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Style="{StaticResource stlNavButtonBorder}" x:Name="border">
<Grid>
<Rectangle Style="{StaticResource stlNavButtonRectangle}"/>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="border"
Storyboard.TargetProperty="BorderBrush.Color"
To="Blue"
Duration="0:0:0.25"/>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="border"
Storyboard.TargetProperty="BorderBrush.Color"
To="#570000FF"
Duration="0:0:0.25"/>
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="border"
Storyboard.TargetProperty="BorderBrush.Color"
To="Black"
Duration="0:0:0.25" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</StackPanel.Resources>
<Button Content="Button 1" />
<Button Content="Button 2"/>
<Button Content="Button 3" />
</StackPanel>
关于c# - 在 WPF 中,为什么触发 MouseLeave 而不是 MouseDown?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36495487/