Scroll wheel emulation

General Discussion Other

epicepee

in General Discussion • Other • 1 year ago

Is there any (reasonably easy) way to emulate the scroll wheel of a mouse moving? (Will give more details on request)

Replies(4)

PhiLho

Re: Scroll wheel emulation

1 year ago

What do you mean by "emulate the scroll wheel", how would you do that (what user input, or is that programmatically?), and why would you want to do that?

calsign

Re: Scroll wheel emulation

1 year ago

Perhaps this thread would be of interest?

epicepee

Re: Scroll wheel emulation

1 year ago

Thank you. I had seen this thread before, but had misinterpreted it as listening to the scroll wheel. Will write some code.

epicepee

Re: Scroll wheel emulation

1 year ago

Okay, I wrote this:

import processing.serial.*;
import java.awt.event.*;
import java.awt.Robot;
import java.awt.AWTException;
import java.awt.event.KeyEvent;
Serial ardIn;
int scroll;
Robot robot;
void setup() {
Serial ardIn = new Serial(this, Serial.list()[3], 9600);
try {
robot = new Robot();
}
catch (AWTException e) {
e.printStackTrace();
}
}
void loop() {
scroll = ardIn.read() / 50;
robot.mouseWheel(scroll);
//robot.keyPress(KeyEvent.VK_A);
delay(5);
}

No errors, everything seems fine, but it does nothing but pop up a little gray window. I have no way of knowing whether the scroll whel is moving when the window is selected, but if I select another program that responds to the wheel, i.e. web browser, nothing happens. I looked it up and apparently the Robot class doesn't work in the background. To get it to, is there another way, or would I have to use something along the lines of Windows API?