Zoom rectangle flicker

[Ted Hill]

In my application, I call

ChartPanel.setMouseZoomable(true, true);

When using the mouse to zoom in on my chart data, the gray rectangle that indicates the zoom area occasionally flickers back and forth between gray and white.

I see that there is a post from 2002 titled "Interactive zooming problem" that also mentions this flicker issue.

Is there any way to prevent this?

FreeChart 1.0.13
Java 1.6.0_18-ea
Windows 7 64 bit

[david.gilbert]

It would be worth checking the value of the useBuffer flag that you pass to the ChartPanel constructor (it is true by default). I'd expect 'true' to give better results, at the expense of using more memory. When it is set to 'false', JFreeChart will use XOR mode to draw the zoom rectangle - that can be less than optimal.

Aside from that, I don't really know where the problem could lie.