Setting a background image on an FxApplication in Flex Gumbo
March 25th, 2009
The following example shows how you can add a background image to a Flex Gumbo FxApplication by creating a custom skin with a BitmapGraphic and setting the skinClass style in MXML, CSS, or ActionScript.
Full code after the jump.
Source:Setting a background image on an FxApplication in Flex Gumbo