WiredPrairie: Embedding a combo box in a RichTextBox

UPDATE (January 2007):

As of the released version of WPF/.NET 3.0, this functionality no longer works at all if you want the control to actually be enabled -- and appears to be intentional/as expected. Several Microsoft employees have stated as much in forum posts.

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=389348&SiteID=1
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=716043&SiteID=1 (look for a post by Prajakta Joshi)

I'm disappointed to say the least that this wasn't included in the final V1 release, as it's something the company I work for would absolutely have used. I hope it returns in V2.

Someone wrote me yesterday asking how I'd gotten a combo box to be embedded successfully in a RichTextBox in WinFX. Since I last discussed this, several WinFX CTPs have come and gone, so I thought I'd post a slightly updated sample. The only real difference is that I changed the FlowDocument IsEnabled property to "True."

Oddly, even though this works on my system just fine, it doesn't work on his. Does it work on yours?

embed.xaml (1 KB)

xml version="1.0" encoding="utf-8"?>

<Grid

xmlns="http://schemas.microsoft.com/winfx/avalon/2005"

xmlns:x="http://schemas.microsoft.com/winfx/xaml/2005"

xmlns:c="http://schemas.microsoft.com/winfx/markup-compatibility/2005"

Background="#FFFFFFFF"

x:Name="DocumentRoot"

Width="640" Height="480">

<Run>This is so cool. A combo box floating in the text region of the rich text control.Run>

<ComboBox

IsSynchronizedWithCurrentItem="True"

x:Name="embeddedCombo"

RenderTransformOrigin="0.5,0.5"

Width="150" Height="23" IsEnabled="True" />

InlineUIContainer>

Paragraph>

FlowDocument>

RichTextBox>

Grid>