Hello Hon,
There might be a way using
RadHostItem, you could check out this similar
KB Article that shows how to add controls to a Ribbon Bar.
The usage of
RadHostItem is very simple and intuitive:
But i have to warn you, you might have to do some tests and tweaks before you will get the size and everything right.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga