I want to add button with image in TextInput Like in image bellow

Please suggest me the crystal clear way to do so!!
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The desired way to do this is to create custom component that extends the Flex
TextInputControl. You can create a custom skin based on standardTextInputSkinand place icon in that skin.[EDIT]
Not exactly what you want. But This may help you..
http://saturnboy.com/2010/07/supertextinput-building-a-custom-component/