Exit | |
---|---|
Block | |
+0 | Length of block |
+4 | Task handle of sender |
+8 | My ref (senders reference number for this message) |
+12 | Your ref (senders reference number for a previous message) |
+16 | Message Code |
+20 | … data… |
This code is returned from Wimp_Poll and indicates that the message sent from this task was not acknowledged by any recipients.
A task that does not understand a message code should simply ignore it. Tasks should not respond to messages for no reason. When no tasks respond to a User_Message_Recorded message, the Wimp will send this message back to the task that originally sent the message.
The message code determines the meaning of the message sent.