shutdown

Type

message

Summary

Sent to the current card of the defaultStack when the application is quitting.

Syntax

shutdown

Description

Handle the shutdown message if you want to perform cleanup tasks before the application quits.

The actual quit process is not triggered by the shutdown message, so trapping the message and not allowing it to pass does not prevent the application from quitting.

In standalones, some care is needed to ensure you receive the shutdown message if your application uses multiple stacks. The most reliable approach is to install a library stack or backscript to handle the message when your application starts up.

note

Applications will not receive this message when running in the IDE.

Examples

on shutdown
  save stack "Preferences"
  pass shutdown
end shutdown

Related

control structure: pass

glossary: application, trap, message, current card

message: closeStack, closeCard, closeBackground, suspend

property: defaultStack, defaultStack

command: quit

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile