When I lock a tab, then double click it to close it, is it possible to see a confirmation message asking me whether or not I am sure?
No, although you can make it so double-clicking tabs does not close them, by turning off Preferences / Folder Tabs / Options / Double-click tabs to close them.
The tab-locking feature is not to prevent them being closed, but to keep a particular directory shown in the tab.
Thank,i use "StrokeIt" to execute command “Ctrl+F4”.So i can't use the double-clicking option。