Listening for the Enter key in a Spark RichEditableText control in Flex 4

The following example shows how you can detect when the user presses the Enter key in a Spark RichEditableText control in Flex 4 by setting the Boolean multiLine property to false and listening for the enter event.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see To download the latest nightly build of the Flex 4 SDK, see

For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- -->
<s:Application name="Spark_RichEditableText_enter_test"
            protected function richeditabletext1_enterHandler(evt:FlexEvent):void {
                lbl.text = "You hit '" + evt.type +"', ouch!";
                setTimeout(clearLabel, 1000 /* 1 second */);
            protected function clearLabel():void {
                lbl.text = "";
    <s:VGroup horizontalCenter="0" verticalCenter="0">
        <s:RichEditableText id="richEdTxt"
                initialize="richEdTxt.text = mx_internal::VERSION;"
                enter="richeditabletext1_enterHandler(event);" />
        <s:Label id="lbl" />

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.

One thought on “Listening for the Enter key in a Spark RichEditableText control in Flex 4

  1. If you wanted to take this a step further, how would you make it so it would listen to a button (click) press elsewhere in the app to change the font to another size or different font altogether?

    Example, if you have a radio button that had “font a”, click it and it changes the font in the richtexteditor if you were designing a greeting card?

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