为什么paragraph设置了ToolTip，但是把鼠标移动到段落上，ToolTip却没有显示？

问题描述

Runrr=newRun("mmmmm");rr.Background=Brushes.Green;rr.Foreground=Brushes.Red;Paragraphpp=newParagraph();pp.ToolTip="aaa";pp.Inlines.Add(rr);this.richTextBox2.Document.Blocks.Add(pp);

解决方案

解决方案二：
完整的贴出来
解决方案三：
前台xaml代码：<Windowx:Class="Test.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="MainWindow"><Grid><RichTextBoxname="richTextBox2"></RichTextBox></Grid></Window>后台xaml.cs代码：[code=C#]usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Imaging;usingSystem.Windows.Navigation;usingSystem.Windows.Shapes;namespaceTest{///<summary>///InteractionlogicforMainWindow.xaml///</summary>publicpartialclassMainWindow:Window{publicMainWindow(){Runrr=newRun("mmmmm");rr.Background=Brushes.Green;rr.Foreground=Brushes.Red;Paragraphpp=newParagraph();pp.ToolTip="aaa";pp.Inlines.Add(rr);this.richTextBox2.Document.Blocks.Add(pp);}}}

[/code]引用1楼的回复:

完整的贴出来

解决方案四：
引用1楼的回复:

完整的贴出来

前台xaml代码：<Windowx:Class="Test.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="MainWindow"><Grid><RichTextBoxname="richTextBox2"></RichTextBox></Grid></Window>

后台xaml.cs代码：usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Imaging;usingSystem.Windows.Navigation;usingSystem.Windows.Shapes;namespaceTest{///<summary>///InteractionlogicforMainWindow.xaml///</summary>publicpartialclassMainWindow:Window{publicMainWindow(){Runrr=newRun("mmmmm");rr.Background=Brushes.Green;rr.Foreground=Brushes.Red;Paragraphpp=newParagraph();pp.ToolTip="aaa";pp.Inlines.Add(rr);this.richTextBox2.Document.Blocks.Add(pp);}}}