Can someone tell how to disable and item in a UltraExplorerBar thoruhg code?
Set UltraExplorerBarItem.Settings.Enabled to false.
What I am asking for is how to disable and enable a single item when there are several items to choose from. Any ideas?
I'm afraid I don't understand your question. You can access any UltraExplorerBarItem from the Items collection of the group to which it belongs. You can also (for example) get a reference to the item at the cursor position using the ItemFromPoint method. Once you have the reference, you just have to set the Settings.Enabled property to false to disable it.