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文档简介
第WPF实现自带触控键盘的文本框项目有个新需求，当点击或触碰TextBox时，基于TextBox的相对位置，弹出一个自定义的Keyboard，如下图所示：
二KeyboardControl
先实现一个自定义的KeyboardControl，它继承自Window。
Xaml代码如下：
Windowx:xmlns="/winfx/2006/xaml/presentation"
xmlns:x="/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApp1"AllowsTransparency="True"WindowResizeMode="NoResize"Background="Transparent"Height="290"Width="668"
FrameworkElement.Resources
ResourceDictionary
StyleTargetType="{x:TypeButton}"x:Key="btnNum"
SetterProperty="Width"Value="50"/
SetterProperty="Height"Value="50"/
SetterProperty="Margin"Value="0055"/
SetterProperty="HorizontalContentAlignment"Value="Center"/
SetterProperty="VerticalContentAlignment"Value="Center"/
SetterProperty="Cursor"Value="Hand"/
SetterProperty="Template"
Setter.Value
ControlTemplateTargetType="{x:TypeButton}"
BorderName="border"BorderBrush="#FF474747"BorderThickness="1"CornerRadius="6"
Border.Background
LinearGradientBrushEndPoint="0.5,1"StartPoint="0.5,0"
GradientStopColor="#FFCCCCCC"/
GradientStopColor="WhiteSmoke"Offset="0.5"/
GradientStopColor="#FFCCCCCC"Offset="1"/
/LinearGradientBrush
/Border.Background
ContentPresenterHorizontalAlignment="Center"VerticalAlignment="Center"
TextElement.Foreground="#333333"TextElement.FontSize="18"/
/Border
/ControlTemplate
/Setter.Value
/Setter
/Style
StyleTargetType="{x:TypeButton}"x:Key="btnFunc"
SetterProperty="HorizontalContentAlignment"Value="Center"/
SetterProperty="VerticalContentAlignment"Value="Center"/
SetterProperty="Width"Value="50"/
SetterProperty="Height"Value="50"/
SetterProperty="Margin"Value="0055"/
SetterProperty="Foreground"Value="#333333"/
SetterProperty="Cursor"Value="Hand"/
SetterProperty="Template"
Setter.Value
ControlTemplateTargetType="{x:TypeButton}"
Border
Name="border"
BorderBrush="#FF565656"
BorderThickness="1"
CornerRadius="6"Background="Orange"
ContentPresenterHorizontalAlignment="Center"VerticalAlignment="Center"
TextElement.Foreground="White"TextElement.FontSize="18"/
/Border
/ControlTemplate
/Setter.Value
/Setter
/Style
local:CapsConverterx:Key="CapsConverter"/
/ResourceDictionary
/FrameworkElement.Resources
BorderBackground="Gray"CornerRadius="6"BorderThickness="1"BorderBrush="#333333"
StackPanelMargin="51055"
Grid
TextBoxName="tbValue"FontSize="28"Height="40"
Background="Transparent"BorderBrush="Silver"BorderThickness="1"
Foreground="White"HorizontalContentAlignment="Right"
SelectionChanged="tbValue_TextChanged"
TextChanged="tbValue_TextChanged"/
/Grid
WrapPanelOrientation="Vertical"
WrapPanelMargin="01000"
ButtonContent="1"Click="Button_Click"/
ButtonContent="2"Click="Button_Click"/
ButtonContent="3"Click="Button_Click"/
ButtonContent="4"Click="Button_Click"/
ButtonContent="5"Click="Button_Click"/
ButtonContent="6"Click="Button_Click"/
ButtonContent="7"Click="Button_Click"/
ButtonContent="8"Click="Button_Click"/
ButtonContent="9"Click="Button_Click"/
ButtonContent="0"Click="Button_Click"/
ButtonContent="-"Click="Button_Click"/
ButtonContent="Del"Click="DELButton_Click"Margin="0005"/
/WrapPanel
WrapPanelMargin="25000"
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=q}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=w}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=e}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=r}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=t}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=y}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=u}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=i}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=o}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=p}"
Click="Button_Click"/
ButtonContent="Clear"Click="ClearButton_Click"/
/WrapPanel
WrapPanelMargin="45000"
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=a}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=s}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=d}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=f}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=g}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=h}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=j}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=k}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=l}"
Click="Button_Click"/
ButtonContent="."Click="Button_Click"/
/WrapPanel
WrapPanelMargin="70000"
ButtonContent="A/a"Click="CapsButton_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=z}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=x}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=c}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=v}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=b}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:KeyboardControl}},Converter={StaticResourceCapsConverter},ConverterParameter=n}"
Click="Button_Click"/
ButtonContent="{BindingPath=Caps,RelativeSource={RelativeSourceAncestorType={x:Typelocal:Keyboar
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