SetPdfAOpenHideMenubar 

This value specifies that the viewer application’s menu bar should be hidden or not when the output PDF/A document is opened.

SetPdfAOpenHideMenubar (pBlackIceDEVMODE As Long, bEnable As Boolean) As Boolean

pBlackIceDEVMODE          - pointer to the BlackIceDEVMODE structure.

bEnable                                
-If FALSE: Menu bar is visible in the viewer when opening the output PDF file
-If TRUE: Menu bar is hidden in the viewer when opening the output PDF file 

Return value - TRUE on success, otherwise FALSE.