wpf 实现一个软键盘，

先发个图：

工作有需要实现一个软键盘，本来想用windows自带的软键盘凑合凑合得了，又觉得那个软键盘太大了，所以自己实现了一个。

说一下实现的思路，其实没什么思路 界面就是都由按钮实现，按照键盘的格式布的局。下面放软键盘控件的代码

前台：

<UserControl x:Class="softkeyboard.Controls.SoftKeyBoard"

             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:softkeyboard.Controls"

             xmlns:system="clr-namespace:System;assembly=mscorlib"

             mc:Ignorable="d"

             d:DesignHeight="190" d:DesignWidth="540">

    <UserControl.Resources>

        <SolidColorBrush x:Key="background" Color="#E8E8E8"></SolidColorBrush>

        <SolidColorBrush x:Key="keybackground" Color="#FEFEFE"></SolidColorBrush>

        <SolidColorBrush x:Key="press" Color="#FFCD43"></SolidColorBrush>

        <local:UperConvert x:Key="UperConvert"></local:UperConvert>

        <local:ShiftConvert x:Key="ShiftConvert"></local:ShiftConvert>

        <system:String x:Key="eq">=</system:String>

        <system:String x:Key="gang">\</system:String>

        <system:String x:Key="yinhao">'</system:String>

        <system:String x:Key="douhao">,</system:String>

        <Style x:Key="keyrow" TargetType="{x:Type StackPanel}">

            <Setter Property="Orientation" Value="Horizontal"></Setter>

            <Setter Property="VerticalAlignment" Value="Center"></Setter>

            <Setter Property="HorizontalAlignment" Value="Left"></Setter>

        </Style>

        <Style x:Key="button" TargetType="{x:Type Button}">

            <Setter Property="Width" Value="30"></Setter>

            <Setter Property="Height" Value="29"></Setter>

            <Setter Property="Margin" Value="3,1"></Setter>

            <Setter Property="Background" Value="{StaticResource keybackground}"></Setter>

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type Button}">

                        <Border x:Name="PART_border" CornerRadius="4" Background="{TemplateBinding Background}">

                            <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">

                                <TextBlock FontSize="{TemplateBinding FontSize}" Foreground="{TemplateBinding Foreground}" Text="{TemplateBinding Content}"></TextBlock>

                            </StackPanel>

                        </Border>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

            <Style.Triggers>

                <Trigger Property="IsPressed" Value="True">

                    <Setter Property="Background" Value="{StaticResource press}"></Setter>

                </Trigger>

            </Style.Triggers>

        </Style>

        <Style x:Key="toggle" TargetType="{x:Type ToggleButton}">

            <Setter Property="Width" Value="30"></Setter>

            <Setter Property="Height" Value="29"></Setter>

            <Setter Property="Margin" Value="3,1"></Setter>

            <Setter Property="Background" Value="{StaticResource keybackground}"></Setter>

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type ToggleButton}">

                        <Border x:Name="PART_border" CornerRadius="4" Background="{TemplateBinding Background}">

                            <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">

                                <TextBlock FontSize="{TemplateBinding FontSize}" Foreground="{TemplateBinding Foreground}" Text="{TemplateBinding Content}"></TextBlock>

                            </StackPanel>

                        </Border>

                        <ControlTemplate.Triggers>

                            <Trigger Property="IsChecked" Value="True">

                                <Setter TargetName="PART_border" Property="Background" Value="{StaticResource press}"></Setter>

                            </Trigger>

                        </ControlTemplate.Triggers>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

            <Style.Triggers>

                <Trigger Property="IsPressed" Value="True">

                    <Setter Property="Background" Value="{StaticResource press}"></Setter>

                </Trigger>

            </Style.Triggers>

        </Style>

    </UserControl.Resources>

    <Border CornerRadius="5" Background="{StaticResource background}">

        <Grid Margin="2">

            <Grid.RowDefinitions>

                <RowDefinition Height="*"></RowDefinition>

                <RowDefinition Height="*"></RowDefinition>

                <RowDefinition Height="*"></RowDefinition>

                <RowDefinition Height="*"></RowDefinition>

                <RowDefinition Height="*"></RowDefinition>

            </Grid.RowDefinitions>

            <!--row1-->

            <StackPanel Grid.Row="0" Style="{StaticResource keyrow}">

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=`}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=1}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=2}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=3}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=4}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=5}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=6}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=7}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=8}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=9}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=0}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=-}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter={StaticResource eq}}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Width="60"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}">Delete</Button>

            </StackPanel>

            <!--row2-->

            <StackPanel Grid.Row="1" Style="{StaticResource keyrow}">

                <Button Style="{StaticResource button}" Width="45"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}">Tab</Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=q}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=w}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=e}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=r}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=t}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=y}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=u}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=i}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=o}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=p}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=[}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=]}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Width="45" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter={StaticResource gang}}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

            </StackPanel>

            <!--row3-->

            <StackPanel Grid.Row="2" Style="{StaticResource keyrow}">

                <ToggleButton x:Name="caps" Style="{StaticResource toggle}" Width="64" Content="Caps lock"

                              IsChecked="{Binding Caps,Mode=TwoWay,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"></ToggleButton>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=a}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=s}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=d}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=f}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=g}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=h}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=j}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=k}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=l}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=;}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter={StaticResource yinhao}}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

               </StackPanel>

            <Button Grid.Row="2" Grid.RowSpan="3" Height="105" HorizontalAlignment="Right" Style="{StaticResource button}"

                    Width="65" Content="Enter" Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                    CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

            <!--row4-->

            <StackPanel Grid.Row="3" Style="{StaticResource keyrow}">

                <ToggleButton x:Name="shift" Style="{StaticResource toggle}" Width="82"

                              IsChecked="{Binding Shift,Mode=TwoWay,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}">Shift</ToggleButton>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=z}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=x}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=c}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=v}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=b}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=n}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=caps,Path=IsChecked,Converter={StaticResource UperConvert},ConverterParameter=m}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter={StaticResource douhao}}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=.}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <Button Style="{StaticResource button}" Content="{Binding ElementName=shift,Path=IsChecked,Converter={StaticResource ShiftConvert},ConverterParameter=/}"

                        Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}"></Button>

                <!--<ToggleButton Style="{StaticResource toggle}" Width="80" >Shift</ToggleButton>-->

            </StackPanel>

            <!--row5-->

            <StackPanel Grid.Row="4" Style="{StaticResource keyrow}">

                <ToggleButton x:Name="ctrl" Style="{StaticResource toggle}"

                              IsChecked="{Binding Ctrl,Mode=TwoWay,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}">Ctrl</ToggleButton>

                <!--<Button Style="{StaticResource button}" Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}">Win</Button>-->

                <ToggleButton x:Name="alt" Style="{StaticResource toggle}"

                              IsChecked="{Binding Alt,Mode=TwoWay,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}">Alt</ToggleButton>

                <Button Style="{StaticResource button}" Width="388" Command="{Binding KeyCommand,RelativeSource={RelativeSource AncestorType={x:Type local:SoftKeyBoard}}}"

                        CommandParameter="{Binding Path=Content,RelativeSource={RelativeSource Self}}">Space</Button>

                <!--<ToggleButton Style="{StaticResource toggle}" >Alt</ToggleButton>

                <ToggleButton Style="{StaticResource toggle}" >Ctrl</ToggleButton>-->

            </StackPanel>

        </Grid>

    </Border>

</UserControl>

后台：

using System;

using System.Collections.Generic;

using System.Globalization;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Forms;

using System.Windows.Input;

using System.Windows.Interop;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using UserControl = System.Windows.Controls.UserControl;

namespace softkeyboard.Controls

{

    /// <summary>

    /// SoftKeyBoard.xaml 的交互逻辑

    /// </summary>

    public partial class SoftKeyBoard : UserControl

    {

        /// <summary>

        /// 导入模拟键盘的方法

        /// </summary>

        /// <param name="bVk" >按键的虚拟键值</param>

        /// <param name= "bScan" >扫描码，一般不用设置，用0代替就行</param>

        /// <param name= "dwFlags" >选项标志：0：表示按下，2：表示松开</param>

        /// <param name= "dwExtraInfo">一般设置为0</param>

        [DllImport("User32.dll")]

        public static extern void keybd_event(byte bVK, byte bScan, Int32 dwFlags, int dwExtraInfo);

        #region

        public static readonly DependencyProperty CapsProperty = DependencyProperty.Register(

            "Caps", typeof(bool), typeof(SoftKeyBoard), new PropertyMetadata(default(bool)));

        public bool Caps

        {

            get { return (bool)GetValue(CapsProperty); }

            set { SetValue(CapsProperty, value); }

        }

        public static readonly DependencyProperty CtrlProperty = DependencyProperty.Register(

            "Ctrl", typeof(bool), typeof(SoftKeyBoard), new PropertyMetadata(default(bool)));

        public bool Ctrl

        {

            get { return (bool)GetValue(CtrlProperty); }

            set { SetValue(CtrlProperty, value); }

        }

        public static readonly DependencyProperty AltProperty = DependencyProperty.Register(

            "Alt", typeof(bool), typeof(SoftKeyBoard), new PropertyMetadata(default(bool)));

        public bool Alt

        {

            get { return (bool)GetValue(AltProperty); }

            set { SetValue(AltProperty, value); }

        }

        public static readonly DependencyProperty ShiftProperty = DependencyProperty.Register(

            "Shift", typeof(bool), typeof(SoftKeyBoard), new PropertyMetadata(default(bool)));

        public bool Shift

        {

            get { return (bool)GetValue(ShiftProperty); }

            set { SetValue(ShiftProperty, value); }

        }

        #endregion

        public ICommand KeyCommand { get; set; }

        private Dictionary<string, byte> keys;

        public SoftKeyBoard()

        {

            InitializeComponent();

            SetCommand();

            CreateKeys();

        }

        private void CreateKeys()

        {

            keys = new Dictionary<string, byte>()

            {

                #region row1

                { "`",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "",},

                { "-",},

                { "=",},

                { "Delete",},

                { "~",},

                { "!",},

                { "@",},

                { "#",},

                { "$",},

                { "%",},

                { "^",},

                { "&",},

                { "*",},

                { "(",},

                { ")",},

                { "_",},

                { "+",},

                #endregion

                #region row2

                { "Tab",},

                { "q",  },

                { "w",  },

                { "e",  },

                { "r",  },

                { "t",  },

                { "y",  },

                { "u",  },

                { "i",  },

                { "o",  },

                { "p",  },

                { "[",  },

                { "]",  },

                { @"\", },

                { "Q",  },

                { "W",  },

                { "E",  },

                { "R",  },

                { "T",  },

                { "Y",  },

                { "U",  },

                { "I",  },

                { "O",  },

                { "P",  },

                { "{",  },

                { "}",  },

                { "|", },

                #endregion

                #region row3

                { "a",},

                { "s",  },

                { "d",  },

                { "f",  },

                { "g",  },

                { "h",  },

                { "j",  },

                { "k",  },

                { "l",  },

                { ";",  },

                { "'",  },

                { "Enter",  },

                { "A",},

                { "S",  },

                { "D",  },

                { "F",  },

                { "G",  },

                { "H",  },

                { "J",  },

                { "K",  },

                { "L",  },

                { ":",  },

                { "\"",  },

                #endregion

                #region row4

                { "z",},

                { "x",  },

                { "c",  },

                { "v",  },

                { "b",  },

                { "n",  },

                { "m",  },

                { ",",  },

                { ".",  },

                { "/",  },

                { "Z",},

                { "X",  },

                { "C",  },

                { "V",  },

                { "B",  },

                { "N",  },

                { "M",  },

                { "<",  },

                { ">",  },

                { "?",  },

                #endregion

                #region other

                {"Space", },

                #endregion

            };

        }

        private void SetCommand()

        {

            KeyCommand = new RoutedCommand();

            CommandBinding cbinding = new CommandBinding(KeyCommand, KeyCommand_Excuted, KeyCommand_CanExcute);

            this.CommandBindings.Add(cbinding);

        }

        private void KeyCommand_CanExcute(object sender, CanExecuteRoutedEventArgs e)

        {

            e.CanExecute = true;

        }

        private void KeyCommand_Excuted(object sender, ExecutedRoutedEventArgs e)

        {

            if (e.Parameter != null)

            {

                string code = e.Parameter.ToString();

                if (keys.ContainsKey(code))

                {

                    byte b = keys[code];

                    try

                    {

                        keybd_event(b, , , );

                    }

                    catch (Exception ex)

                    {

                        Console.WriteLine(ex.Message);

                    }

                }

            }

        }

        protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)

        {

            base.OnPropertyChanged(e);

            if (e.Property == CapsProperty)

            {

                //按下

                keybd_event(, , , );

                //抬起

                keybd_event(, , , );

            }

            else if(e.Property==ShiftProperty)

            {

                if (Shift)

                {

                    //按下

                    keybd_event(, , , );

                }

                else

                {

                    //抬起

                    keybd_event(, , , );

                }

            }

            else if (e.Property == CtrlProperty)

            {

                if (Ctrl)

                {

                    //按下

                    keybd_event(, , , );

                }

                else

                {

                    //抬起

                    keybd_event(, , , );

                }

            }

            else if (e.Property == AltProperty)

            {

                if (Alt)

                {

                    //按下

                    keybd_event(, , , );

                }

                else

                {

                    //抬起

                    keybd_event(, , , );

                }

            }

        }

    }

    public class UperConvert : IValueConverter

    {

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

        {

            if (parameter == null)

            {

                return "";

            }

            if (value == null)

            {

                if (parameter != null)

                {

                    return parameter.ToString();

                }

                else

                {

                    return "";

                }

            }

            bool isuper = (bool)value;

            if (isuper)

            {

                return parameter.ToString().ToUpper();

            }

            else

            {

                return parameter.ToString().ToLower();

            }

        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

        {

            throw new NotImplementedException();

        }

    }

    public class ShiftConvert : IValueConverter

    {

        Dictionary<string, string> dic = new Dictionary<string, string>()

        {

            {"`","~" },

            {"","!" },

            {"","@" },

            {"","#" },

            {"","$" },

            {"","%" },

            {"","^" },

            {"","&" },

            {"","*" },

            {"","(" },

            {"",")" },

            {"-","_" },

            {"=","+" },

            {"[","{" },

            {"]","}" },

            {";",":" },

            {"'","\"" },

            {",","<" },

            {".",">" },

            {"/","?" },

            {@"\","|" },

        };

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

        {

            if (parameter == null)

            {

                return "";

            }

            if (value == null)

            {

                if (parameter != null)

                {

                    return parameter.ToString();

                }

                else

                {

                    return "";

                }

            }

            bool shift = (bool)value;

            if (shift)

            {

                var cond = parameter.ToString();

                if (dic.ContainsKey(cond))

                {

                    return dic[cond];

                }

                else

                {

                    return "";

                }

            }

            else

            {

                return parameter.ToString();

            }

        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

        {

            throw new NotImplementedException();

        }

    }

}

后来发现，把他放在窗口上 要实现使用的方法还需要改点东西，下面放上窗口的代码

前台：

<Window x:Class="softkeyboard.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:local="clr-namespace:softkeyboard"

        xmlns:controls="clr-namespace:softkeyboard.Controls"

        mc:Ignorable="d"

        WindowStyle="None"

        WindowStartupLocation="Manual"

        AllowsTransparency="True"

        Background="Transparent"

        Title="MainWindow" Height="190" Width="540" MouseLeftButtonDown="MainWindow_OnMouseLeftButtonDown" ShowInTaskbar="True">

    <Window.Resources>

        <SolidColorBrush x:Key="ColorBrush" Color="Red" Opacity="0.7"></SolidColorBrush>

        <PathGeometry x:Key="closed" Figures="M509.125332 997.359791C236.342166 997.359791 14.419101 775.403955 14.419101 502.620789 14.419101 229.804853 236.342166 7.849017 509.125332 7.849017s494.739002 221.955836 494.739002 494.771772c0 272.783166-221.955836 494.739002-494.739002 494.739002zM726.85375 321.923243l-36.998101-36.965331-180.697547 180.664776-180.697546-180.664776-36.998101 36.965331 180.697546 180.697546-180.697546 180.664776 36.998101 36.998101 180.697546-180.697546 180.697547 180.697546 36.998101-36.998101-180.697546-180.664776 180.697546-180.697546z"></PathGeometry>

        <Style x:Key="CloseBtn" TargetType="{x:Type Button}">

            <Setter Property="Background" Value="{StaticResource ColorBrush}"></Setter>

            <Setter Property="Foreground" Value="White"></Setter>

            <Setter Property="FocusVisualStyle" Value="{x:Null}"></Setter>

            <Setter Property="Cursor" Value="Hand"></Setter>

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type Button}">

                        <Border x:Name="Part_Border"  BorderThickness="{TemplateBinding BorderThickness}">

                            <Grid>

                                <Ellipse Width="Auto" Height="Auto" Stroke="LightGray">

                                    <Ellipse.Fill>

                                        <SolidColorBrush Color="Red" Opacity="0.5"/>

                                    </Ellipse.Fill>

                                </Ellipse>

                                <TextBlock Text="×" HorizontalAlignment="Center" Foreground="LightGray"  VerticalAlignment="Center" FontSize="20" />

                            </Grid>

                        </Border>

                        <ControlTemplate.Triggers>

                            <Trigger Property="IsMouseOver" Value="True">

                                <Setter  Property="Background" Value="Red"></Setter>

                            </Trigger>

                            <Trigger Property="IsPressed" Value="True">

                                <Setter  Property="Background" Value="Red"></Setter>

                            </Trigger>

                        </ControlTemplate.Triggers>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

        </Style>

    </Window.Resources>

    <Grid>

        <Viewbox Margin="0,0,6,0">

            <controls:SoftKeyBoard></controls:SoftKeyBoard>

        </Viewbox>

        <Button Width="21" Height="21" Style="{StaticResource CloseBtn}" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="519,0,0,0" Click="ButtonBase_OnClick"></Button>

    </Grid>

</Window>

后台：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Interop;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace softkeyboard

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        [DllImport("user32.dll")]

        public static extern int SetWindowLong(IntPtr hWnd, int nindex, IntPtr dwNewLong);

        [DllImport("user32.dll", SetLastError = true)]

        public static extern UInt32 GetWindowLong(IntPtr hWnd, int index);

        public MainWindow()

        {

            InitializeComponent();

            this.Loaded += MainWindow_Loaded;

        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)

        {

            WindowInteropHelper windowInteropHelper = new WindowInteropHelper(this);

            IntPtr intPtr = windowInteropHelper.Handle;

            int value = -;

            SetWindowLong(intPtr, value, (IntPtr)0x8000000);

        }

        private void MainWindow_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)

        {

            base.DragMove();

        }

        private void ButtonBase_OnClick(object sender, RoutedEventArgs e)

        {

            this.Close();

        }

    }

}

所有的代码都已经写在这里了，就不单独上传代码了。

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