THE HYPERCARD CENTER

HyperTalk Reference

Note: This is a work in progress and many formatting issues have been fixed. Read more about the project on the home page.

push

push card

push card [of stack]

push bkgnd [of stack]

push stack

The push command saves the identification of a card in HyperCard’s memory. If you specify a background or stack, HyperCard stores the location of the first card of the background or stack. In all cases, HyperCard saves the full card ID and the path name for the stack.

Each call to push saves a card ID in last-in, first-out order. You can return to saved locations using the pop command.

Note: The word stack that forms part of the stack identifier stack is optional with the push command.

There is a limit of twenty pushes.

If you pop more than you push, you go to the Home stack.

Examples

push card

push this card

push next card

push recent card -- remember where you've been

push card 234 of this stack

push first card of stack "Home"

push first card of "Home"

push background "Index" of stack "Glossary"

push background "Index" of "Glossary"

push stack "Home"

push "Home"

Demo Script

on goHomeAndBack

  -- This demo shows that you can push and pop more than one card. Each

  -- successive pop goes back through the pushed cards.

  click at the loc of bkgnd button "close"

  set lockMessages to true

  push this card

  go prev card

  push this card

  wait 1 second

  go to card 3 of stack "Home"

  wait 1 second

  pop card

  pop card

  click at the loc of bkgnd button "Demo Script"

end goHomeAndBack

Placeholders

card

An expression that identifies a card by name, number, or id using one of the following forms (in AppleScript, use “background” in place of “bkgnd”):

recent card

back

forth

card id posInteger [of bkgnd

card text [of bkgnd] -- name

card posInteger [of bkgnd] -- number

ordinal card [of bkgnd]

position card [of bkgnd]

ordinal marked card

position marked card

marked card posInteger

For example:

card id 3894

card "Index"

card 1 of background 1

prev card

previous card of this background

next card

this card

first card

last card

middle card

any card

first marked card

last marked card

next marked card

previous marked card

marked card 1

marked card (the number of marked cards)

When used inside a card script in HyperTalk: me

When a card receives a message: [the] target

stack

An expression that identifies a stack by its name, using one of the following forms:

this stack

stack text -- name or path name

For example:

stack "Home"

stack "Simonides:School:References"

this stack

stack "HD:Stacks:Addresses alias

When used inside a stack script: me

When a stack receives a message: [the] target

bkgnd

A HyperTalk expression that identifies a background by name, number, or id, using one of the following forms:

bkgnd id posInteger

bkgnd text -- name

bkgnd posInteger -- number

ordinal bkgnd

position bkgnd

For example:

bkgnd id 3894

bkgnd "Index"

bkgnd 1

prev bkgnd

previous bkgnd

next bkgnd

this bkgnd

first bkgnd

last bkgnd

middle bkgnd

any bkgnd

From within a background script, the term me refers to that background.

When a background receives a the message [the] target, that message is referring to the background.

push

Examples

Demo Script

Related Topics

Placeholders

card

stack

bkgnd