diff -r 000000000000 -r 804d8803eade ui/wpf/UIcore/Window.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/wpf/UIcore/Window.cs	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,110 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace UI
+{
+    public class MainWindow : Window, Container
+    {
+        public Layout Layout
+        {
+            get
+            {
+                return Container.Layout;
+            }
+            set
+            {
+                Container.Layout = value;
+            }
+        }
+        
+        public IntPtr Object;
+        public Container Container;
+        
+        public MainWindow(String title, IntPtr uiobj)
+        {
+            Title = title;
+            Object = uiobj;
+            Width = 300;
+            Height = 300;
+
+            Grid windowGrid = new Grid();
+            ColumnDefinition column = new ColumnDefinition();
+            column.Width = new GridLength(1, GridUnitType.Star);
+            windowGrid.ColumnDefinitions.Add(column);
+            this.AddChild(windowGrid);
+            int rowIndex = 0;
+
+            // menu
+            Application app = Application.GetInstance();
+            System.Windows.Controls.Menu menu = null;
+            if (!app.Menu.IsEmpty())
+            {
+                menu = app.Menu.CreateMenu(uiobj);
+
+                RowDefinition menuRow = new RowDefinition();
+                menuRow.Height = GridLength.Auto;
+                windowGrid.RowDefinitions.Add(menuRow);
+
+                Grid.SetRow(menu, rowIndex);
+                Grid.SetColumn(menu, 0);
+                windowGrid.Children.Add(menu);
+                rowIndex++;
+            }
+
+            // toolbar
+            if(app.ToolBar.HasItems())
+            {
+                System.Windows.Controls.ToolBarTray tray = app.ToolBar.CreateToolBarTray(uiobj);
+                RowDefinition menuRow = new RowDefinition();
+                menuRow.Height = GridLength.Auto;
+                windowGrid.RowDefinitions.Add(menuRow);
+
+                Grid.SetRow(tray, rowIndex);
+                Grid.SetColumn(tray, 0);
+                windowGrid.Children.Add(tray);
+                rowIndex++;
+
+                if(menu != null)
+                {
+                    menu.Background = tray.Background;
+                }
+            }
+
+            // content
+            RowDefinition contentRow = new RowDefinition();
+            contentRow.Height = new GridLength(1, GridUnitType.Star);
+            windowGrid.RowDefinitions.Add(contentRow);
+            BoxContainer vbox = new BoxContainer(BoxOrientation.VERTICAL, 0, 0);
+            Grid.SetColumn(vbox, 0);
+            Grid.SetRow(vbox, rowIndex);
+            windowGrid.Children.Add(vbox);
+            rowIndex++;
+
+            Container = vbox;
+
+            Closed += CloseEvent;
+        }
+
+        public void ShowWindow()
+        {
+            this.Show();
+            Application.GetInstance().AddWindow(this);
+        }
+
+        public void CloseEvent(object sender, System.EventArgs e)
+        {
+            Application.GetInstance().RemoveWindow(this);
+        }
+
+        public void Add(UIElement control, bool fill)
+        {
+            Container.Add(control, fill);
+        }
+    }
+}