RibbonCanvas.EmbedControl
From Jeremie Leroy - XOJO Controls Wiki
Method
RibbonCanvas.EmbedControl ( c As RectControl, Left As Integer = - 1, Top As Integer = - 1, Tab As Integer = - 1, Section As Integer = - 1, Button As Integer = - 1 )
If a control should be displayed over the Ribbon, use this function to embed the control in the Ribbon. If the control isn't embedded, it will not display properly.