Message_PreQuit (changes)

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WindowManager

» Messages

» Message Codes

» Message_PreQuit

Message_PreQuit

(Code &8)

Use

This message is used to notify a task that it is about to be Quit.

Notes

This message is sent to a specific task when the user tries to quit it from the task display menu.

This message is also broadcast to all tasks when the computer is being shut-down.

If the task has no objections to be quit, it should simply ignore the message. It will then receive a Message_Quit message.

An application that does not wish to quit, perhaps due to unsaved data, should acknowledge this message using Wimp_SendMessage, then open a dialogue box allowing the data to be first saved.

If bit 0 is unset. i.e. the message has been broadcast due to the system being shutdown. The application should re-start the shutdown process again. This can be easily achieved by emitting a Ctrl-Shit Ctrl-Shift F12 key press usingWimp_ProcessKey.

See also

• Message_Quit
• Wimp_Poll
• Wimp_ProcessKey
• Wimp_SendMessage