JFreechart Zoom with mouseWheelListener

I'am using a swing JFreechart component inside my RCP application. This JFreechart zooms properly with mouseWheel when run as a swing component. But after emb开发者_开发问答edding it with RCP, this zoom with mouseWheel is not working. What could be the reason?

Regards

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Check isMouseWheelEnabled(). Note that versions of the Java runtime older than 1.4 do not support mouse wheel events.