To set the value of a ToolTip in ActionScript, use the toolTip property of the component.
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<!-- tooltips/BasicToolTipActionScript.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark">
<s:layout>
<s:VerticalLayout />
</s:layout>
<fx:Script>
public function createNewButton(event:MouseEvent):void {
var myButton:Button = new Button();
myButton.label = "Create Another Button";
myButton.toolTip = "Click this new button to create another button.";
myButton.addEventListener(MouseEvent.CLICK, createNewButton);
addElement(myButton);
}
</fx:Script>
<s:Button id="b1" label="Create Another Button"
toolTip="Click this button to create another button." click="createNewButton(event);" />
</s:Application>
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