org.eclipse.swt.widgets.Monitor does not retun correct values for the 2-nd monitor

Issue

I want to get dimensions and zoom of all monitors. Code:

package root.viewer.rcp.util;

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Monitor;
import org.eclipse.ui.PlatformUI;

public class ApplicationMonitorsManager
{
  public Monitor[] monitors;
  //public Display display = new Display();
  
  public ApplicationMonitorsManager()
  {
    
  }
  
  public Monitor[] getMonitors()
  {
    //Display display = Display.getCurrent();
    Display display = PlatformUI.createDisplay();
    monitors = display.getMonitors();
    return monitors;
  }
}

Values for primary monitor are correct:

clientHeight    2070    
clientWidth 3840    
clientX 0   
clientY 0   
handle  200823  
height  2160    
width   3840    
x   0   
y   0   
zoom    225 

The second monitor has the same resolution, but zoom is 125%. Values I get:

clientHeight    3798    
clientWidth 6912    
clientX 6912    
clientY 0   
handle  200517  
height  3888    
width   6912    
x   6912    
y   0   
zoom    225 

Any idea what is wrong, please?

Does not matter if I try Display display = Display.getCurrent() or Display display = PlatformUI.createDisplay(). For Display display = new Display() application crashes with SWTException: Invalid thread access.

Solution

SWT does not yet support different zoom values:

Eclipse SWT issue #131 - [Multi-Monitor] SWT applications to support and work with different zoom values per Shell.

Answered By - howlger