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Creating custom design-time preview for Flex 3 components

February 29th, 2008 by Alex Batsuev

Sometimes it is necessary to create custom preview of the component in the Flex Builder “Design” view.
It is undocumented feature ๐Ÿ˜‰
I’ve found very interesting class in the Flex SDK 3: mx.core.UIComponentGlobals.

This class contains static field designMode:Boolean.

Just check that field in your component code.
You can download example component with the source code from here:

Also you can download the usage sample:

Running in the Flex Builder “Design” mode it shows AnyChart image. But when it runs in the flash player it shows only gray rectangle.

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