Disallowed

Disallowed is a special flag which tells the window manager that the window is not allowed to run and should be forcibly killed on sight.

This is used to block certain programs from opening.

Example rule to prevent the plasma shell, that may start automatically via xdg on plasma / KDE installations, from starting with the window manager:

   { .class = "plasmashell", .flags = Disallowed }

Note that applications that have the override-redirect flag enabled are not managed by the window manager and adding a rule like above will have no effect. You can run xwininfo on the window in question to check whether this flag is enabled or not.

Also refer to the Unmanaged flag.

Back to Features > Flags.