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enterKey
enterKey
The enterKey command sends a statement typed into the Message box to the current card.
HyperCard sends the enterKey command to the current card when the user presses the Enter key unless the insertion point is in a field, in which case HyperCard sends enterInField instead.
You can handle the enterKey message as follows:
on enterKey
statements
end enterKey
Examples
Note the difference between these two scripts:
on addText
select after text of bkgnd field "Example" -- set the insert point
type "Hello world" -- add some new text
enterKey
end addText
on addText
select after text of bkgnd field "Example" -- set the insert point
type "Hello world" -- add some new text
enterInField
end addText
If you type addText into the Message box and press Return, the first script continually adds "hello world" after existing text in the field. This is because the enterKey command sends the contents of the Message box—which in this case is addText—to the current card.
With the second script, addText places "Hello world" into the field once and then closes the field, saving the addition.
Related Topics
Placeholders
statements
Any return-separated list of built-in commands, user-defined handlers, or keywords that are part of a message or function handler.
put "Hello world" -- built-in command
get total(field 1) -- function call
global HelpInfo -- keyword
HyperTalk Reference
