The following example shows how you can customize the appearance of the Flex ToolTip using a <mx:Style /> block.
Full code after the jump.
<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/09/01/customizing-a-flex-tooltip-instances-appearance-using-styles/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">
<mx:Style>
ToolTip {
backgroundColor: black;
backgroundAlpha: 1.0;
cornerRadius: 0;
color: white;
}
</mx:Style>
<mx:Button label="Roll over to see tool tip"
toolTip="The quick brown fox jumped over the lazy dog." />
</mx:Application>
View source is enabled in the following example.



Thanks! This was quite helpful. I was wondering if there was an easy way to style tooltips, and this is about as easy as it gets!
Thanks. Does this apply automatically to validator error messages such as requiredFieldError, invalidCharError, and invalidNumberError. I have found that it doesn’t.
Hi,
This is good but i have need of to customize the background image of the tooltip.
if anyone has idea about it then plese tell me.
Thanks