WANTNORETURNS attribute
The WANTNORETURNS attribute forces a text
field to reject newline characters when the user presses the
Return key.
Syntax
WANTNORETURNSUsage
By default, text fields like TEXTEDIT insert a newline
(ASCII 10) character in the text when the user presses the Return key.
As the Return key is typically used to fire the accept action to
validate the dialog, you can force the field to reject Return keys with
this attribute.
The user can still enter new line characters with Shift-Return or Ctrl-Return, if these keys are not bound to actions.