AddRibbonItems
-------------------------
This sample shows how to add a Ribbon control to the form and populate it with various items programmatically.

The items added include toggle buttons, radio buttons (using a RibbonToggleGroup)
and a combo box.

The sample also demonstrates the use of RibbonToolBar for arranging the items into rows.

This sample utilizes the following classes:

- C1Ribbon
- RibbonComboBox
- RibbonGroup
- RibbonTab
- RibbonToggleButton
- RibbonToggleGroup
- RibbonToolBar
