preOpenStack

Type

message

Summary

Sent to the destination card when you open a stack.

Syntax

preOpenStack

Description

Handle the preOpenStack message to update a card's appearance before the card appears on screen.

The preOpenStack message is sent before the openStack message. Unlike openStack, preOpenStack handlers are executed before the stack window appears. Because of this, the preOpenStack handler is a good place to put code that adjusts the size, position, and appearance of objects; the changes are made before the stack appears.

The actual navigation is not triggered by the preOpenStack message, so trapping the message and not allowing it to pass does not prevent the stack from opening.

Examples

on preOpenStack -- center the stack on the main screen
  set the loc of this stack to the screenLoc
  pass preOpenStack
end preOpenStack

Related

object: stack, card

control structure: pass

glossary: object, handler, trap, message, stack window, execute

keyword: card

message: openStack, closeStack, preOpenCard

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile