I’ve updated the Flex 4 RTE with US English spellchecking using the very useful Squiggly from Adobe Labs. Basically, it works like your typical MS Word spellcheck. Red squiggly lines will appear if it thinks you’ve mistyped something and you can right click to bring up a context menu to see your options.

One interesting bug that I ran into and wrestled with for 1 hour was that if you use a Spark Panel as your container, it swallows up your context menu and just gives you the plain ole Flash context menu. After some googling, I found out that it was already logged in Squiggly’s JIRA. As luck would have it, a very kind member provided a workaround. Make sure that you have mouseEnabled=true in your opening Panel tag as well as the listed creationComplete event handler:

	horizontalCenter="0" verticalCenter="0"
	xmlns:mx="library://ns.adobe.com/flex/mx" height="300"
	mouseEnabled="true" creationComplete="creationCompleteHandler(event)"

    protected function creationCompleteHandler(event:FlexEvent):void
	    this.skin.mouseEnabled = true;

Problem solved! As usual, you can play with it here and pull the repo from github.