Make items show in dropdown.

Perspex.Themes.Default/DropDownStyle.cs

@@ -81,7 +81,10 @@ namespace Perspex.Themes.Default
                         },
                         new Popup
                         {
-                            Child = new TextBlock { Text = "Hello World" },
+                            Child = new ItemsControl
+                            {
+                                [~ListBox.ItemsProperty] = control[~DropDown.ItemsProperty],
+                            },
                             PlacementTarget = control,
                             [~Popup.IsOpenProperty] = control[~DropDown.IsDropDownOpenProperty],
                         }

TestApplication/Program.cs

@@ -333,6 +333,18 @@ namespace TestApplication
                 Header = "Lists",
                 Content = new StackPanel
                 {
+                    DataTemplates = new DataTemplates
+                    {
+                        new DataTemplate<Item>(x =>
+                            new StackPanel
+                            {
+                                Children = new Controls
+                                {
+                                    new TextBlock { Text = x.Name, FontSize = 24 },
+                                    new TextBlock { Text = x.Value },
+                                }
+                            })
+                    },
                     Orientation = Orientation.Horizontal,
                     HorizontalAlignment = HorizontalAlignment.Center,
                     VerticalAlignment = VerticalAlignment.Center,
@@ -346,23 +358,12 @@ namespace TestApplication
                         },
                         new ListBox
                         {
-                            DataTemplates = new DataTemplates
-                            {
-                                new DataTemplate<Item>(x =>
-                                    new StackPanel
-                                    {
-                                        Children = new Controls
-                                        {
-                                            new TextBlock { Text = x.Name, FontSize = 24 },
-                                            new TextBlock { Text = x.Value },
-                                        }
-                                    })
-                            },
                             Items = listBoxData,
                         },
                         new DropDown
                         {
                             Content = "Dropdown",
+                            Items = listBoxData,
                             VerticalAlignment = VerticalAlignment.Center,
                         }
                     }

Windows/Perspex.Win32/PopupImpl.cs

@@ -21,7 +21,13 @@ namespace Perspex.Win32
                 (int)p.Y, 
                 0,
                 0,
-                UnmanagedMethods.SetWindowPosFlags.SWP_NOSIZE);
+                UnmanagedMethods.SetWindowPosFlags.SWP_NOSIZE | UnmanagedMethods.SetWindowPosFlags.SWP_NOACTIVATE);
+        }
+
+
+        public override void Show()
+        {
+            UnmanagedMethods.ShowWindow(this.Handle.Handle, UnmanagedMethods.ShowWindowCommand.ShowNoActivate);
         }
 
         protected override IntPtr CreateWindowOverride(ushort atom)

Windows/Perspex.Win32/WindowImpl.cs

@@ -71,8 +71,6 @@ namespace Perspex.Win32
                             -padding.top + padding.bottom + (int)value.Height,
                             UnmanagedMethods.SetWindowPosFlags.SWP_RESIZE);
                     }
-
-                    System.Diagnostics.Debug.WriteLine("ClientSize = " + value);
                 }
             }
         }
@@ -128,7 +126,7 @@ namespace Perspex.Win32
             UnmanagedMethods.SetWindowText(this.hwnd, title);
         }
 
-        public void Show()
+        public virtual void Show()
         {
             UnmanagedMethods.ShowWindow(this.hwnd, UnmanagedMethods.ShowWindowCommand.Normal);
         }