java control of the mouse wheel

I am trying to programmatically mouse wheel up/down within a window. I can move and click the the mouse fine but I cant scroll up or down.

Within the Matlab command window I entered

>> rand(10000, 1) % make something to scroll up to

Then after that prints

import java.awt.Robot;
import java.awt.event.*;
mouse = Robot;
mouse.mouseWheel(-100); % negative is up

I have tried +100 and other larger and smaller values - all no luck.

I have read How can I programmatically control mouse motion and clicks with MATLAB? and it is great for moving the mouse and clicking but it does not help with scrolling.

[per isakson]

Search Undocumented Matlab for Robot

Answer 1

[Chris Wilkening]

The below code works when the program first clicks into a Chrome window - it does not seem to work in the Command Window. Or the Command Window is resetting back to the bottom after the scroll, is hard to tell.

import java.awt.Robot;

mouse = Robot();

mouse.mouseWheel(1);