RISC OS Open

RISC OS  OPEN


A fast and easily customised operating system for devices using ARM processor cores.

Documentation: Message_DeviceInUse

Programmer’s Reference Manuals
» Part 7 – The Desktop
» The Window Manager
» Messages
» Message Codes
» Message_DeviceInUse

Message_DeviceInUse

(Code &C)

Message Block
+20 Major Device Numbers
+24 Minor Device Numbers
+28 Information string (zero terminated)

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.

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.


See also

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