h6. [[WindowManager]] h6(. » [[WindowManager Messages|Messages]] h6((. » [[Message Codes|Message Codes]] h6(((. » Message_DeviceInUse h2. Message_DeviceInUse h5. (Code &C) |_\2<^. Message Block | |>^. +20|<^. Major [[Device Numbers]] | |>^. +24|<^. Minor [[Device Numbers]] | |>^. +28|<^. Information string (zero terminated) | h4. Use This message is sent in response to a [[Message_DeviceClaim]] if the receiver does not want the claimant to gain exclusive use of a device. i.e. it's already using it. h4. Notes The information string should be used to give information as to why the claim has failed. e.g. the printer is active. The information string is zero terminated. h4. See also * [[Device Numbers]] * [[Message_DeviceClaim]] * [[Wimp_Poll]]