How can I bring to front a window called by an script in unity?

Question

Hello,

I'm trying to bring to front the unity game when it is not the active window.

I've tried implenting a dll and later importing de "user32.dll" but is not working.

The code is something like this:

using System; using System.Collections.Generic; using System.Threading; using System.Runtime.InteropServices; using System.Diagnostics; using UnityEngine; using System.Collections;

public class AccesoDLL : MonoBehaviour {

 [DllImport("SimpleDLL")] 
 private static extern byte cSum(byte b1, byte b2);
 [DllImport("SimpleDLL")] 
 private static extern int MinimizarVentana(int u);
 [DllImport("SimpleDLL")]
 private static extern int MaximizarVentana(int u);
 [DllImport("SimpleDLL")]
 private static extern int GetWindowHandler();

 [DllImport("user32.dll")]
 [return: MarshalAs (UnmanagedType.Bool)]
 private static extern bool SetForegroundWindow(int hWnd);


 public int u;

 void Awake() {

     u = GetWindowHandler();
 }

 public void Minimizar () {

     MinimizarVentana(u);
 }

 public void Maximizar () {

     MaximizarVentana(u);
 }


 public void SetForegroundWindows(){

     SetForegroundWindow(u);

 }

}

The functions Maximizar and Minimizar are working on my own dll, but when I try yo use de API functions like SetForegroundWindow not work.

Does anybody know how to do this?

Thanks!

Answer 1

Answer by atti · May 05, 2015 at 08:14 AM

Here's my solution that works with Unity 5.0.1 and Windows 8.1:

 using UnityEngine;
 using System;
 using System.Collections;
 using System.Runtime.InteropServices;
 
 public class ForeGrounder : MonoBehaviour {
 
     private const uint LOCK = 1;
     private const uint UNLOCK = 2;
 
     private IntPtr window;
 
     void Start() {
         LockSetForegroundWindow(LOCK);
         window = GetActiveWindow();
         StartCoroutine(Checker());
     }
 
     IEnumerator Checker() {
         while (true) {
 
             yield return new WaitForSeconds(1);
             IntPtr newWindow = GetActiveWindow();
 
             if (window != newWindow) {
                 Debug.Log("Set to foreground");
                 SwitchToThisWindow(window, true);
             }
         }
     }
 
     [DllImport("user32.dll")]
     static extern IntPtr GetActiveWindow();
     [DllImport("user32.dll")]
     static extern bool LockSetForegroundWindow(uint uLockCode);
     [DllImport("user32.dll")]
     static extern void SwitchToThisWindow(IntPtr hWnd, bool fAltTab);
 }

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niltoid · Jun 26, 2018 at 06:09 PM 0

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still works on Unity 2017.4 - thanks!

How can I bring to front a window called by an script in unity?

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