https://www.syncfusion.com/forums/159521/how-to-add-usercontrol-in-the-ribbonwindow-titlebar
How to add usercontrol in the RibbonWindo... | WPF Forums | Syncfusion
Forum Thread - Ribbon - How to add usercontrol in the RibbonWindow titlebar. Browse other users' questions about our WPF Ribbon components.
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