Choose screen with Command line arguments

The -adapter switch does not work in windowed mode. I have made a workaround using user32.dll to position the window at a deifined position

 game.exe -popupwindow -screen-width 1920 -screen-height 1080 -screen-position-x 1920 -screen-position-y 0

the C# code needed is:

 using UnityEngine;
 using System;
 using System.Collections;
 using System.Runtime.InteropServices;
 
 private static string[] startupArgs;
 
 public class PlaceWindow : MonoBehaviour 
 {
   #if UNITY_STANDALONE_WIN || UNITY_EDITOR
   [DllImport("user32.dll", EntryPoint = "SetWindowPos")]
   private static extern bool SetWindowPos(IntPtr hwnd, int hWndInsertAfter, int x, int Y, int cx, int cy, int wFlags);
   [DllImport("user32.dll")]
   static extern IntPtr GetForegroundWindow();
   
   public static void SetPosition(int x, int y, int resX = 0, int resY = 0) 
   {
     IntPtr hWnd = GetForegroundWindow();
     SetWindowPos(hWnd, 0, x, y, resX, resY, resX * resY == 0 ? 1 : 0);
   }
   #endif
 
   public static string getStartupParameter(String parameter)
   {
     if(startupArgs == null)
       startupArgs = Environment.GetCommandLineArgs();
     string s = null;
     for(int i = 0; i < startupArgs.Length; i++)
     {
       if(startupArgs[i].Equals(parameter) && startupArgs.Length >= i+2)
         s = startupArgs[i+1];
     }
     return s;
   }
     
   // Use this for initialization
   void Awake () 
   {
     int x = int.Parse(getStartupParameter("-screen-position-x"));
     int y = int.Parse(getStartupParameter("-screen-position-y"));
     SetPosition(x,y);
   }
 }