Autoscroll not working when used scrollwheel

Question

I am working on a little Swing application and I want to disable all possible scrolling in a scrollpane but autoscroll. The code i have is below:

private void removeScrollBar(JScrollPane scrollPane){
    scrollPane.setBounds(10, 35, 250, 525);
    scrollPane.setBackground(new Color(1, 0, 0, 0));
    scrollPane.getVerticalScrollBar().setPreferredSize(new Dimension(0, 0));
    scrollPane.getViewport().setBorder(null);
    scrollPane.setViewportBorder(null);
    scrollPane.setBorder(null);
    scrollPane.setWheelScrollingEnabled(false);
}

Basically when I scroll while the cursor is above the scrollPane, it disables the autoscrolling, which is handled by a JTextArea Caret. The code for that is below:

((DefaultCaret) textArea.getCaret()).setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);

How can I fix this?

Have a look at [Why JScrollPane does not react to mouse wheel events?](http://stackoverflow.com/questions/12911506/why-jscrollpane-does-not-react-to-mouse-wheel-events). — Braj, Mar 22 '14 at 23:26
It sounds like you're putting a lot of effort into making your application hard to use. Why work so hard to change the scrolling mechanism that they're used to? — BillRobertson42, Mar 23 '14 at 16:42
@bill haha:) yess, It is to make it easier for myself, I basically have 3 scrollpanes that need to be scrolled in sync, I'm doing that automatically, but now i decided to use a simple synchronizer class that transfers the value from 1 scrollbar to the other. get it? probably not... — rhbvkleef, Apr 01 '14 at 07:40

score 2 · Accepted Answer · answered Mar 23 '14 at 15:44

Basically when I scroll while the cursor is above the scrollPane, it disables the autoscrolling, which is handled by a JTextArea Caret.

Not sure, but maybe you can use Smart Scrolling.

It disables automatic scrolling when the scrollbar is not at the bottom of the scroll pane.

Autoscroll not working when used scrollwheel

1 Answers1