目标是制作一个用户控制键盘，所以我从 NuGet 安装了 InputSimulator，我用一个按钮尝试了它，当然在将该按钮的属性 Focusable 设置为 False 后它运行良好，但是当我将键盘创建为 UserControl 时，键盘不工作（不输入字符）。
这是用户控件的 xaml.cs 中的代码：
private void clickAlphabet(VirtualKeyCode virtualKey)
{
var inputSim = new InputSimulator();
inputSim.Keyboard.KeyPress(virtualKey);
}
private void Button_Click(object sender, RoutedEventArgs e)
{
clickAlphabet(VirtualKeyCode.VK_A);
}
用户控件的 Xaml（一键）：
<Button Content="a" Click="Button_Click"/>
此代码来自 App.xaml：
<Style TargetType="Button">
<Setter Property="Focusable" Value="False"/>
</Style>
这是我如何调用键盘用户控件：
<controls:ucKeyboard Margin="7 300"></controls:ucKeyboard>
这是用户控件的整个 xaml：
<UserControl x:Class="SmartCaisse.PL.UserControls.ucKeyboard"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:SmartCaisse.PL.UserControls"
mc:Ignorable="d"
d:DesignHeight="268" d:DesignWidth="797">
<Border CornerRadius="0 0 15 15" Background="green">
<Grid Width="797">
<Grid.RowDefinitions>
<RowDefinition Height="60"/>
<RowDefinition Height="7"/>
<RowDefinition Height="60"/>
<RowDefinition Height="7"/>
<RowDefinition Height="60"/>
<RowDefinition Height="7"/>
<RowDefinition Height="60"/>
</Grid.RowDefinitions>
<Grid.Resources>
<Style TargetType="{x:Type Button}">
<Setter Property="Margin" Value="0,0,7,0"/>
<Setter Property="Width" Value="60"/>
<Setter Property="Height" Value="60"/>
<Setter Property="Background" Value="{x:Null}"/>
<Setter Property="Foreground" Value="#fff"/>
<Setter Property="FontFamily" Value="Tahoma"/>
<Setter Property="FontSize" Value="20"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Background="{TemplateBinding Background}" BorderBrush="#fff" BorderThickness="2" Focusable="False">
<ContentPresenter HorizontalAlignment="center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="StackPanel">
<Setter Property="Orientation" Value="Horizontal"/>
</Style>
</Grid.Resources>
<StackPanel Grid.Row="0">
<Button Content="a" Click="Button_Click"/>
<Button Content="z"/>
<Button Content="e"/>
<Button Content="r"/>
<Button Content="t"/>
<Button Content="y"/>
<Button Content="u"/>
<Button Content="i"/>
<Button Content="o"/>
<Button Content="p"/>
<Button Width="127 ">
<Image Source="/assets/Icons/VirtualKeyboardIcons/backspace.png" Width="24" Height="24"></Image>
</Button>
</StackPanel>
<StackPanel Grid.Row="2" HorizontalAlignment="Right">
<Button Content="q"/>
<Button Content="s"/>
<Button Content="d"/>
<Button Content="f"/>
<Button Content="g"/>
<Button Content="h"/>
<Button Content="j"/>
<Button Content="k"/>
<Button Content="l"/>
<Button Content="m"/>
<Button Content="Entrée" Width="103" Margin="0"/>
</StackPanel>
<StackPanel Grid.Row="4">
<Button>
<Image Source="/assets/Icons/VirtualKeyboardIcons/arrow-up.png" Width="24" Height="24"></Image>
</Button>
<Button Content="w"/>
<Button Content="x"/>
<Button Content="c"/>
<Button Content="v"/>
<Button Content="b"/>
<Button Content="n"/>
<Button Content=","/>
<Button Content="."/>
<Button Content="-"/>
<Button Content="_"/>
<Button>
<Image Source="/assets/Icons/VirtualKeyboardIcons/arrow-up.png" Width="24" Height="24"></Image>
</Button>
</StackPanel>
<Border Grid.Row="6" CornerRadius="0 0 15 15">
<StackPanel>
<Button Content="&123" FontSize="18"/>
<Button Content="@"/>
<Button Width="529"/>
<Button>
<Image Source="/assets/Icons/VirtualKeyboardIcons/arrow-left.png" Width="24" Height="24"></Image>
</Button>
<Button>
<Image Source="/assets/Icons/VirtualKeyboardIcons/arrow-right.png" Width="24" Height="24"></Image>
</Button>
</StackPanel>
</Border>
</Grid>
</Border>
更新：我发现此代码（在 App.XAML 文件中）对用户控件中的按钮不起作用：
<Style TargetType="Button">
<Setter Property="Focusable" Value="False"/>
</Style>
所以我在用户控件的XAML文件中重写，这不是问题。问题是，我发现如果我点击按钮的文本（属性内容）它可以工作，但如果我点击按钮的其余空间它不起作用，请看这张图片：
我找到了产生这个问题的代码，这个来自用户控件的 XAML 文件的代码块，我添加它来删除按钮的默认悬停效果：
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Background="{TemplateBinding Background}" BorderBrush="#fff" BorderThickness="2" Focusable="False">
<ContentPresenter HorizontalAlignment="center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
所以我想解决方案是找到另一种方法来消除悬停效果，还有其他方法可以消除它吗？