Cursor Focus problem for InlineUIContainer in RadRichTextBox

[Ruyu]

The InlineUiContainer is allowed to be inserted into RadRichTextBox officially by Telerik.

But there're some problems:

When I insert  a <Textbox> in to  RadRichTextBox 

                        <telerik:InlineUIContainer>
                            <TextBox Width="100" Height="50"/>
                        </telerik:InlineUIContainer>

       The TextBox can be shown in the RadRichTextBox correctly, and input charactors in inner TextBox correctly. But when I press "Backspace", the cursor will jump to to outer RadRichTextBox instead of delete the last character in inner TextBox !

       I used to think it's caused by the Microsoft WPF and Telerik WPF these 2 mechanisms (incompatible).Then I tried to use a RadTextBox, but no this control (with the acceptable reason: no color can be set on this control, so theme is unnecessary). 

       Fortunately, I found a Telerik control called telerik:RadMaskedTextInput, then I tried it as 

                        <telerik:InlineUIContainer>
                            <telerik:RadMaskedTextInput Width="100" Height="50" TextMode="PlainText"/>
                        </telerik:InlineUIContainer>

       But the problem is still !!!!  Press "backspace" in the inner RadMaskedTextInput will make the cursor jump into the outer RadRichTextBox .............

       On the other hand, if you insert a RadRichTextB​ox into a RadRichTextBox ,  the cursor is Okay both in inner and outer RadRichTextBox .

       I'm using ver 2014Q3.

       Then Whether this problem has been fixed now ? If yes , could you please tell me the ver?

       

[Tanya]

Hello ,

RadRichTextBox gets the focus and executes its DeleteCommand when the Backspace is pressed. You could override this command with a custom one with the corresponding logic. I am attaching a sample project, which demonstrates how you could achieve the desired behavior. 

Hope this helps.

Regards,
Tanya
Telerik

[Matt]

This isn't a good solution. There's tons of different hotkeys available in textboxes besides backspace/delete (left/right, ctrl+left/right, shift+left/right, ctrl+shift+left/right, etc). It gets even more complicated when managing selected text (figuring out which direction to extend the selection, etc). Are we expected to re-implement all of these different key combinations or is there some better way to prevent the RadRichTextBox from stealing keyboard focus when a control inside an InlineUIContainer is focused?

[Tanya]

Hello Matt,

I completely agree with you that such an approach is not feasible for any scenario.

We have recently logged a bug report for this behavior: RichTextBox: Keyboard commands are not working for controls inside InlineUIContainer. Please, check its description where you can find a suggestion for working around this issue. Also, make sure you are following the public item so we can notify you when its status changes.

Regards,
Tanya
Progress Telerik