Getting the list of displays attached

rtavakko

Hey mates, let's say I have two monitors attached, I want to put my sketch in fullScreen() on one of them. Is it possible to get a list of the displays attached to the system in processing?

Ater

What do you want to be on that list? Cause if you put fullScreen(2), it would always run on second, additional monitor.

On the internet I found some code:

import java.awt.GraphicsEnvironment;
import java.awt.GraphicsDevice;
import java.awt.HeadlessException;

GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] devices = env.getScreenDevices();
int numberofScreens = devices.length;

Here's reference on GraphicsDevice. So you can see what information you can get out of it.

rtavakko

Thanks for the reply!! I know you can use fullScreen(2) but if you're making a GUI its easier to list screen name (if possible) instead of screen 1,2,3 etc.

Ater

You need to use getIDstring() method then. Like:

for (GraphicsDevice d: devices){
String s = d.getIDstring();
println(s);
}

rtavakko

Nice. Is it possible to access the same descriptions windows or any OS uses to identify the screen?

Ater

I have no Idea, the best way to know is to try the code on different OS.

rtavakko

What I mean is .getIDstring() shows \display0. Windows screens tab shows "Mobile PC Display". Is there a way of getting that description in java?

Ater

That's a bit too deep, but if you want, you can research: http://stackoverflow.com/questions/17268869/getting-screen-names

rtavakko

Hmm interesting. Yea I think I'll be ok with just the display number. Thanks again for your help!

rtavakko

I noticed fullScreen() doesn't work in processing 3.0a5. Is there another way of switching screens mid-sketch?