如何在RichTextBox中底部对齐文本?似乎控件不直接支持它。所以我正在寻找模仿它的方法。理想情况下,我会将控件的边界固定,文本的末尾与底部对齐。
答案 0 :(得分:1)
文本来自名为PART_ContentHost的ScrollViewer,它位于由RichTextBox包装的TextBoxBase的默认控件模板中。您应该覆盖控件模板,让ScrollViewer将其VerticalAlignment声明为Bottom,或让它将模板绑定到VerticalContentAlignment。
下面,我做了后者。这是从Blend中提取的默认控件模板的修改版本。我做的唯一更改是将 VerticalAlignment =“{TemplateBinding VerticalAlignment}”添加到ScrollViewer。
(另请注意,它引用的Microsoft_Windows_Themes定义为xmlns:Microsoft_Windows_Themes =“clr-namespace:Microsoft.Windows.Themes; assembly = PresentationFramework.Aero”
如果Aero不在用户的计算机上,我不确定这将如何工作)
<Style x:Key="BottomAlignedTextBoxBaseStyle"
TargetType="TextBoxBase"
BasedOn="{StaticResource {x:Type TextBoxBase}}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBoxBase}">
<Microsoft_Windows_Themes:ListBoxChrome x:Name="Bd"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
RenderMouseOver="{TemplateBinding IsMouseOver}"
RenderFocused="{TemplateBinding IsKeyboardFocusWithin}" SnapsToDevicePixels="true">
<ScrollViewer x:Name="PART_ContentHost"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Microsoft_Windows_Themes:ListBoxChrome>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Background"
TargetName="Bd"
Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
<Setter Property="Foreground"
Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
然后,要使用它,只需说:
<RichTextBox Style="{StaticResource BottomAlignedTextBoxBaseStyle}"
VerticalContentAlignment="Bottom" />