From 1fb9e061a3334d492540fdb4c67dd8b3c5a47dda Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Franti=C5=A1ek=20Boh=C3=A1=C4=8Dek?=
 <fandabohacek@gmail.com>
Date: Wed, 26 Aug 2020 21:11:27 +0200
Subject: [PATCH] fix: wait for main nostale window to open

---
 NosTaleGfless/NostaleLauncher.cs | 29 +++++++++++++++++++++++++++++
 NosTaleGfless/User32.cs          | 28 ++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 NosTaleGfless/User32.cs

diff --git a/NosTaleGfless/NostaleLauncher.cs b/NosTaleGfless/NostaleLauncher.cs
index 518db315f8101494f9577ea2c430807fb5e5ef7f..710efc2b4b1867a335a03cb83efedf7822acf366 100644
--- a/NosTaleGfless/NostaleLauncher.cs
+++ b/NosTaleGfless/NostaleLauncher.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
 using System.Diagnostics;
 using System.IO;
 using System.Threading;
@@ -27,6 +29,33 @@ namespace NosTaleGfless
                     NostaleProcess process = RunProcess(account, nostalePath);
                     process.Initialized = ProcessPipeServer(process, sessionToken).GetAwaiter().GetResult();
 
+                    if (process.Initialized)
+                    {
+                        while (true)
+                        {
+                            List<IntPtr> handles = new List<IntPtr>();
+
+                            // wait for main window open
+                            User32.EnumDesktopWindows(IntPtr.Zero, (hWnd, lParam) =>
+                            {
+                                User32.GetWindowThreadProcessId(hWnd, out uint processId);
+                                if (processId == process.ProcessId)
+                                {
+                                    handles.Add(hWnd);
+                                }
+
+                                return true;
+                            }, IntPtr.Zero);
+
+                            if (handles.Count > 6)
+                            {
+                                break;
+                            }
+
+                            Task.Delay(50).GetAwaiter().GetResult();
+                        }
+                    }
+
                     return process;
                 }
             });
diff --git a/NosTaleGfless/User32.cs b/NosTaleGfless/User32.cs
new file mode 100644
index 0000000000000000000000000000000000000000..e46beedb6c1ed1e035b33f4145b0458181d49436
--- /dev/null
+++ b/NosTaleGfless/User32.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace NosTaleGfless
+{
+    public class User32
+    {
+        [DllImport("user32.dll")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool IsWindowVisible(IntPtr hWnd);
+
+        [DllImport("user32.dll", EntryPoint = "GetWindowText",
+            ExactSpelling = false, CharSet = CharSet.Auto, SetLastError = true)]
+        public static extern int GetWindowText(IntPtr hWnd,
+            StringBuilder lpWindowText, int nMaxCount);
+
+        [DllImport("user32.dll", EntryPoint = "EnumDesktopWindows",
+            ExactSpelling = false, CharSet = CharSet.Auto, SetLastError = true)]
+        public static extern bool EnumDesktopWindows(IntPtr hDesktop,
+            EnumDelegate lpEnumCallbackFunction, IntPtr lParam);
+
+        [DllImport("user32.dll", SetLastError=true)]
+        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
+
+        public delegate bool EnumDelegate(IntPtr hWnd, int lParam);
+    }
+}
\ No newline at end of file