is there any way to disable shortcut keys (Shift+Delete, Shift+Insert, Ctrl+Insert, Ctrl+X, Ctrl+C, Ctrl+V) in RichViewEdit except writing code for OnRichViewEditKeyDown event handler?
No. Only using OnKeyDown.
Or Form.OnKeyDown + Form.KeyPreview=True, but it is essentially the same thing.
Or placing menu items or actions with these shortcuts.
But there are no RichViewEdit properties to disable processing these keys.