Accessing the Icon for a Button Programmatically in Flex 3

Anthony Caliendo, Wednesday, September 16, 2009 @ 11:01 am

The other day, I was trying to get the icon for a button in flex programmatically for a FlexUnit test. The code I was testing set the icon of a button using setStyle('icon', ICON). I attempted the obvious button.getStyle('icon') in the test, but was surprised that this always returned null.

A little bit of digging revealed that the I needed to go through the style declaration for the button. When changing my test to assert on button.styleDeclaration.getStyle('icon'), I was able to successfully access the icon.

I found this a bit non-intuitive, but fortunately it only involved some investigation and minimal code changes.

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