deleteField

Type

message

Summary

Sent to a field just before it is removed from the stack.

Syntax

deleteField

Description

Handle the deleteField message if you want to perform cleanup before a field is removed from the stack.

The actual deletion is not triggered by the deleteField message, so trapping the message and not allowing it to pass does not prevent the field from being removed.

However, the undo command will restore a field after it is deleted by the user. For example, the following handler, placed in a card or stack script, effectively prevents a field from being deleted by the user:

     on deleteField
        beep
        send \"undo\" to this card in 5 milliseconds
     end deleteField

Examples

on deleteField -- first save the contents in a custom property
   set the uFieldText[the short name of the target] \
        of this card to the text of the target
   pass deleteField
end deleteField

Related

command: delete

control structure: pass

glossary: handler, trap, message, command, card

object: field, stack

property: script

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile