Are you just looking for a close button? Because this is available by setting the UltraTabControl.CloseButtonLocation to Tab. If you want some other button, you can probably just reuse the close button. You can change the button image by setting the CloseButtonAppearance.Image property. And then you can handle the UltraTabControl.TabClosing event. Set Cancel to True on the event args so the tab doesn't actually close and then perform your button click logic. However, with this solution, you lose the ability for the user to close the tabs.

I can use the UltraDropDownButton to open the menu but have not been able to find a way to add the button to the Tab Header. Is this supported?