Hi i do not have picture at the moment
but my NMenuBar in the main form show
"Doc" with the red text on the left of menu and also the is a "X" the right end...

These do not show in Windows 7. It is hard for me to test result in XP at the moment.
Do you know what could cause these effect...

by the way... if i disable ...MdiEnabled = False will it help? Or should i leave it true?

Hello JSW W.,

I assume that you mean the case when along with NCommandBarsManager and NMenuBar you have also NDockManager and NUIDocuments which view is set to MdiStandard.
You should have this "Doc" icon and "X" on your menu bar when some of the documents is maximized.
They appear to be able to minimize or restore the maximized document.

Best Regards,
Nevron Support Team

Hi I guess in windows xp i set
DocumentViewStyle.MdiStandard

so the icon shown...
Best,