Styling specific states in a Spark ToggleButton control in Flex 4

The following example shows how you can style specific states in a Flex 4 Spark ToggleButton control using CSS by specifying the state name after the control name in the <Script> block. In this example the base color for all the states is set to red and then overridden in the “upAndSelected”, “overAndSelected”, “downAndSelected”, and “disabledAndSelected” states and set to haloGreen.

And a huge thanks to my co-worker, Joan “Tan” Lafferty for explaining Advanced CSS to me! And for more information on Advanced CSS tricks, check out the “CSS Advanced Selectors – Functional and Design Specification” on the Flex 4 page at the website.

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_ToggleButton_statesStyle_test"
        @namespace s "library://";
        s|ToggleButton {
            chromeColor: red;
        s|ToggleButton:disabledAndSelected {
            chromeColor: haloGreen;
    <s:ToggleButton id="btn"
            label="Spark ToggleButton (selected={btn.selected})"
            verticalCenter="0" />


View source is enabled in the following example.

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.

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