如何更改模板中 ContentPresenter 的 TextBlock 默认属性 [英] How to change TextBlock default properties for a ContentPresenter in a template

问题描述

基于以下代码:

<GroupBox>
  <GroupBox.Template>
    <ControlTemplate TargetType="{x:Type GroupBox}">
      <ContentPresenter TextElement.FontSize="28" />
    </ControlTemplate>
  </GroupBox.Template>
  <TextBlock>Test</TextBlock>
</GroupBox>

我期望以 FontSize=28 显示Test".但它使用默认大小.

I was expecting "Test" to be displayed with FontSize=28. But it uses the default size instead.

如果我像这样删除 TextBlock :

If I remove the TextBlock like this :

<GroupBox>
  <GroupBox.Template>
    <ControlTemplate TargetType="{x:Type GroupBox}">
      <ContentPresenter TextElement.FontSize="28" />
    </ControlTemplate>
  </GroupBox.Template>
  Test
</GroupBox>

文本现在显示为 28 作为 FontSize.

The text is now the displayed with 28 as FontSize.

当我使用 TextBlock 时，属性值不应该被继承吗?

Shouldn't the property value be inherited when I use a TextBlock ?

另一个问题 我如何更改 FontFamilyContentPresenter? 没有帮助，因为它也只适用于默认内容.

This other question How do I Change the FontFamily on a ContentPresenter? doesn't help, as it works only for default content too.

这个问题还有:如何更改 FontFamily内容展示者?.

当您使用默认内容处理程序时两者都有效，但在您手动创建文本块时失败.

Both works whe you use the default content handler, but fails when you manually create a textblock.

如另一个问题所示，我已经尝试过简单地使用 ContentControl :

As demonstrated in this other question, I've tried by simply using a ContentControl :

<StackPanel>
   <StackPanel.Resources>
      <ControlTemplate x:Key="UsingBorderTemplate" TargetType="{x:Type ContentControl}">
         <Border BorderBrush="Red" BorderThickness="1" TextElement.FontFamily="Courier New" Margin="5">
            <ContentPresenter/>
         </Border>
      </ControlTemplate>
      <ControlTemplate x:Key="MyTemplate" TargetType="{x:Type ContentControl}">
         <ContentPresenter TextElement.FontFamily="Courier New" Margin="5" />
      </ControlTemplate>
   </StackPanel.Resources>
   <ContentControl Template="{StaticResource MyTemplate}">
        I'm courier new!
   </ContentControl>
   <ContentControl Template="{StaticResource MyTemplate}">
       <TextBlock>I'm default!</TextBlock>
   </ContentControl>
</StackPanel>

您可以将模板从MyTemplate"更改为UsingBorderTemplate"，结果相同.

You can change the template from "MyTemplate" to "UsingBorderTemplate" with the same result.

推荐答案

我在使用 ContentPresenter 时遇到了一个奇怪的问题.我记得我已经分析了问题的根源并发现它是设计使然 - 可能您在这里遇到了同样的问题.

I had an odd problem with ContentPresenter. I remember that I have analyzed the source of the problem and have found out that it was by design - Probably you have here the same issue.

看看这篇文章，也许对你有帮助.

Look at this post, maybe it helps you.

这篇关于如何更改模板中 ContentPresenter 的 TextBlock 默认属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！