Is it possible to create custom controls for the Ribbonbar? For example: I need a ComboBox which executes a macro after every KeyUp event and changes the background color of the control.
AFAIK there is no background color property in the MS-CUSTOMUI Combobox and only a "onChange" event which only works when hitting Enter.
Looks like I need to create my own ComboBox. Can it be done?
No, it's not possible to create custom controls for the Ribbon. There are certain aspects of the Ribbon design that Microsoft reserves for itself. It only offers what's available for Ribbon XML.