Each MDI/MDIHelp window defines an mdirbb_1 object by default in the window's source code (similar to mdi_1 and mditbb_1).
When a menu is converted and displayed as a ribbon bar, that ribbon bar will be bound with the mdirbb_1 object.
The definition of the mdirbb_1 object in the MDI window is like below:
(Note that the mdirbb_1 object inherits from the RibbonBar control, therefore it has the properties, functions and events of the RibbonBar control.)
Note
If your code checks the existence of all controls in the window, for example, if your code calls the "of_setcontrolstatus" method of the "pfc_n_cst_security" object in the PFC framework, make sure you have modified the code to check mdirbb_1, or upgraded your PFC framework to the latest version, otherwise you may encounter this error: "Unknown control mdirbb_1".
