WPF(Trigger)

<Window x:Class="TestResourcesTriggle.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    
    <Window.Resources>
        <Style TargetType="CheckBox" >
            <Style.Triggers>
                <Trigger Property="IsChecked" Value="true" >
                    <Trigger.Setters >
                        <Setter Property="FontSize" Value="20" />
                        <Setter Property="Foreground" Value="Orange" />
                    </Trigger.Setters>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>
    
    
    <StackPanel >
        <CheckBox Content="悄悄的我走了" Margin="5" />
        <CheckBox Content="正如我悄悄的来" Margin="5,0" />
        <CheckBox Content="我挥一挥衣袖" Margin="5" />
        <CheckBox Content="不带走一片云彩" Margin="5,0" Width="496" />
    </StackPanel>
    
</Window>