Thank you for using RadRichTextBox.
As a matter of fact the best LayoutMode for your document would be FlowNoWrap, but this feature will be available in Q1(around March 15).
However you can try a workaround with the current version. First of all if you want to limit the number of lines to only one, you can set the property AcceptsReturn="False", thus if the user hits enter nothing will happen. If you want your RadRichTextBox to look a lot like a regular TextBox you can set Width="23" and Height="120". About the FontSize, as you know we use a larger one, so if you want to change it you can set these properties: DocumentInheritsDefaultStyleSettings="True" and FontSize="12" (NOTE: FontSize will work only in conjunction with DocumentInheritsDefaultStyleSettings). To remove the scrollbars you can set: HorizontalScrollBarVisibility="Hidden" and VerticalScrollBarVisibility="Hidden". Your Document should be in Flow LayoutMode.
If you have any other questions or concerns, please contact us again.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!