Note that the ShowDocumentCloseButton property controls the visibility of the close button displayed in each tab:
Each document windows has it own buttons configuration. So you can disable the close button for all document windows using the code snippet below:
foreach (DockWindow item in this.radDock1.DockWindows)
if (item is DocumentWindow)
item.DocumentButtons = DocumentStripButtons.ActiveWindowList;
I hope this information helps.
Dess | Tech Support Engineer, Sr.
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