问题
I have a JScrollPane and a JPanel inside. I see the scrollbars when needed, but the mouse wheeling works only when the mouse is over the scrollbars. Is there a property or something to make mouse wheeling work when the mouse pointer is over the whole panel, not just the scrollbars? You know like in browsers - you can scroll the page even if the mouse pointer is not over the scrollbars.
Thanks in advance!
回答1:
It works for me (Java 6, Windows, JScrollPane containing a JPanel, mouse wheeling over JPanel). JPanel with rounded 100 pixel borders, min size 1000x1000, preferred size (4000x4000).
So I guess, that your existing code interferes. Try a separate example, and then rework your app.
回答2:
Make sure main window(possibly a JFrame) implements Scrollable.
来源：https://stackoverflow.com/questions/7202028/jscrollpane-mouse-wheel-area