diff --git a/libxenia.vcxproj b/libxenia.vcxproj
index 9334245b9..74515307c 100644
--- a/libxenia.vcxproj
+++ b/libxenia.vcxproj
@@ -403,6 +403,7 @@
     <ClInclude Include="src\xenia\ui\loop.h" />
     <ClInclude Include="src\xenia\ui\main_window.h" />
     <ClInclude Include="src\xenia\ui\menu_item.h" />
+    <ClInclude Include="src\xenia\ui\platform.h" />
     <ClInclude Include="src\xenia\ui\ui_event.h" />
     <ClInclude Include="src\xenia\ui\win32\win32_control.h" />
     <ClInclude Include="src\xenia\ui\win32\win32_file_picker.h" />
diff --git a/libxenia.vcxproj.filters b/libxenia.vcxproj.filters
index 70041c6f3..9484f4917 100644
--- a/libxenia.vcxproj.filters
+++ b/libxenia.vcxproj.filters
@@ -1368,6 +1368,9 @@
     <ClInclude Include="src\xenia\ui\gl\circular_buffer.h">
       <Filter>src\xenia\ui\gl</Filter>
     </ClInclude>
+    <ClInclude Include="src\xenia\ui\platform.h">
+      <Filter>src\xenia\ui</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="src\xenia\cpu\hir\opcodes.inl">
diff --git a/src/xenia/emulator.cc b/src/xenia/emulator.cc
index 34d94f5f9..93fdd4ee8 100644
--- a/src/xenia/emulator.cc
+++ b/src/xenia/emulator.cc
@@ -70,7 +70,7 @@ Emulator::~Emulator() {
   export_resolver_.reset();
 
   // Kill the window last, as until the graphics system/etc is dead it's needed.
-  main_window_.reset();
+  display_window_.reset();
 }
 
 X_STATUS Emulator::Setup() {
@@ -94,8 +94,7 @@ X_STATUS Emulator::Setup() {
   SetProcessAffinityMask(process_handle, system_affinity_mask);
 
   // Create the main window. Other parts will hook into this.
-  main_window_ = std::make_unique<ui::MainWindow>(this);
-  main_window_->Start();
+  display_window_ = ui::MainWindow::Create(this);
 
   // Create memory system first, as it is required for other systems.
   memory_ = std::make_unique<Memory>();
@@ -152,8 +151,8 @@ X_STATUS Emulator::Setup() {
   if (!processor_->Setup()) {
     return result;
   }
-  result = graphics_system_->Setup(processor_.get(), main_window_->loop(),
-                                   main_window_.get());
+  result = graphics_system_->Setup(processor_.get(), display_window_->loop(),
+                                   display_window_.get());
   if (result) {
     return result;
   }
diff --git a/src/xenia/emulator.h b/src/xenia/emulator.h
index ccddfc52b..93b39ae73 100644
--- a/src/xenia/emulator.h
+++ b/src/xenia/emulator.h
@@ -15,7 +15,7 @@
 #include "xenia/debug/debugger.h"
 #include "xenia/kernel/kernel_state.h"
 #include "xenia/memory.h"
-#include "xenia/ui/main_window.h"
+#include "xenia/ui/platform.h"
 #include "xenia/vfs/virtual_file_system.h"
 #include "xenia/xbox.h"
 
@@ -49,7 +49,7 @@ class Emulator {
 
   const std::wstring& command_line() const { return command_line_; }
 
-  ui::MainWindow* main_window() const { return main_window_.get(); }
+  ui::PlatformWindow* display_window() const { return display_window_.get(); }
 
   Memory* memory() const { return memory_.get(); }
 
@@ -83,7 +83,7 @@ class Emulator {
 
   std::wstring command_line_;
 
-  std::unique_ptr<ui::MainWindow> main_window_;
+  std::unique_ptr<ui::PlatformWindow> display_window_;
 
   std::unique_ptr<Memory> memory_;
 
diff --git a/src/xenia/gpu/gl4/gl4_graphics_system.cc b/src/xenia/gpu/gl4/gl4_graphics_system.cc
index 52641c9af..852dcc6fb 100644
--- a/src/xenia/gpu/gl4/gl4_graphics_system.cc
+++ b/src/xenia/gpu/gl4/gl4_graphics_system.cc
@@ -53,7 +53,7 @@ GL4GraphicsSystem::GL4GraphicsSystem(Emulator* emulator)
 GL4GraphicsSystem::~GL4GraphicsSystem() = default;
 
 X_STATUS GL4GraphicsSystem::Setup(cpu::Processor* processor,
-                                  ui::PlatformLoop* target_loop,
+                                  ui::Loop* target_loop,
                                   ui::PlatformWindow* target_window) {
   auto result = GraphicsSystem::Setup(processor, target_loop, target_window);
   if (result) {
diff --git a/src/xenia/gpu/gl4/gl4_graphics_system.h b/src/xenia/gpu/gl4/gl4_graphics_system.h
index 5baaa1f70..8137ea8c6 100644
--- a/src/xenia/gpu/gl4/gl4_graphics_system.h
+++ b/src/xenia/gpu/gl4/gl4_graphics_system.h
@@ -29,7 +29,7 @@ class GL4GraphicsSystem : public GraphicsSystem {
 
   static std::unique_ptr<GraphicsSystem> Create(Emulator* emulator);
 
-  X_STATUS Setup(cpu::Processor* processor, ui::PlatformLoop* target_loop,
+  X_STATUS Setup(cpu::Processor* processor, ui::Loop* target_loop,
                  ui::PlatformWindow* target_window) override;
   void Shutdown() override;
 
diff --git a/src/xenia/gpu/graphics_system.cc b/src/xenia/gpu/graphics_system.cc
index 46a882100..d5233d250 100644
--- a/src/xenia/gpu/graphics_system.cc
+++ b/src/xenia/gpu/graphics_system.cc
@@ -38,19 +38,11 @@ std::unique_ptr<GraphicsSystem> GraphicsSystem::Create(Emulator* emulator) {
   }
 }
 
-GraphicsSystem::GraphicsSystem(Emulator* emulator)
-    : emulator_(emulator),
-      memory_(nullptr),
-      processor_(nullptr),
-      target_loop_(nullptr),
-      target_window_(nullptr),
-      interrupt_callback_(0),
-      interrupt_callback_data_(0) {}
+GraphicsSystem::GraphicsSystem(Emulator* emulator) : emulator_(emulator) {}
 
 GraphicsSystem::~GraphicsSystem() = default;
 
-X_STATUS GraphicsSystem::Setup(cpu::Processor* processor,
-                               ui::PlatformLoop* target_loop,
+X_STATUS GraphicsSystem::Setup(cpu::Processor* processor, ui::Loop* target_loop,
                                ui::PlatformWindow* target_window) {
   processor_ = processor;
   memory_ = processor->memory();
diff --git a/src/xenia/gpu/graphics_system.h b/src/xenia/gpu/graphics_system.h
index e7a2c32d7..a77654c45 100644
--- a/src/xenia/gpu/graphics_system.h
+++ b/src/xenia/gpu/graphics_system.h
@@ -16,7 +16,8 @@
 
 #include "xenia/cpu/processor.h"
 #include "xenia/memory.h"
-#include "xenia/ui/main_window.h"
+#include "xenia/ui/loop.h"
+#include "xenia/ui/platform.h"
 #include "xenia/xbox.h"
 
 namespace xe {
@@ -36,8 +37,7 @@ class GraphicsSystem {
   Memory* memory() const { return memory_; }
   cpu::Processor* processor() const { return processor_; }
 
-  virtual X_STATUS Setup(cpu::Processor* processor,
-                         ui::PlatformLoop* target_loop,
+  virtual X_STATUS Setup(cpu::Processor* processor, ui::Loop* target_loop,
                          ui::PlatformWindow* target_window);
   virtual void Shutdown();
 
@@ -64,14 +64,14 @@ class GraphicsSystem {
  protected:
   GraphicsSystem(Emulator* emulator);
 
-  Emulator* emulator_;
-  Memory* memory_;
-  cpu::Processor* processor_;
-  ui::PlatformLoop* target_loop_;
-  ui::PlatformWindow* target_window_;
+  Emulator* emulator_ = nullptr;
+  Memory* memory_ = nullptr;
+  cpu::Processor* processor_ = nullptr;
+  ui::Loop* target_loop_ = nullptr;
+  ui::PlatformWindow* target_window_ = nullptr;
 
-  uint32_t interrupt_callback_;
-  uint32_t interrupt_callback_data_;
+  uint32_t interrupt_callback_ = 0;
+  uint32_t interrupt_callback_data_ = 0;
 };
 
 }  // namespace gpu
diff --git a/src/xenia/gpu/xe-gpu-trace-viewer.cc b/src/xenia/gpu/xe-gpu-trace-viewer.cc
index 19569542b..98b9cf36b 100644
--- a/src/xenia/gpu/xe-gpu-trace-viewer.cc
+++ b/src/xenia/gpu/xe-gpu-trace-viewer.cc
@@ -24,7 +24,6 @@
 #include "xenia/gpu/xenos.h"
 #include "xenia/profiling.h"
 #include "xenia/ui/gl/gl_context.h"
-#include "xenia/ui/main_window.h"
 
 // HACK: until we have another impl, we just use gl4 directly.
 #include "xenia/gpu/gl4/command_processor.h"
@@ -843,7 +842,7 @@ class TracePlayer : public TraceReader {
   int current_command_index_;
 };
 
-void DrawControllerUI(xe::ui::MainWindow* window, TracePlayer& player,
+void DrawControllerUI(xe::ui::PlatformWindow* window, TracePlayer& player,
                       Memory* memory) {
   ImGui::SetNextWindowPos(ImVec2(5, 5), ImGuiSetCond_FirstUseEver);
   if (!ImGui::Begin("Controller", nullptr, ImVec2(340, 60))) {
@@ -884,7 +883,7 @@ void DrawControllerUI(xe::ui::MainWindow* window, TracePlayer& player,
   ImGui::End();
 }
 
-void DrawCommandListUI(xe::ui::MainWindow* window, TracePlayer& player,
+void DrawCommandListUI(xe::ui::PlatformWindow* window, TracePlayer& player,
                        Memory* memory) {
   ImGui::SetNextWindowPos(ImVec2(5, 70), ImGuiSetCond_FirstUseEver);
   if (!ImGui::Begin("Command List", nullptr, ImVec2(200, 640))) {
@@ -1028,7 +1027,7 @@ ShaderDisplayType DrawShaderTypeUI() {
   return shader_display_type;
 }
 
-void DrawShaderUI(xe::ui::MainWindow* window, TracePlayer& player,
+void DrawShaderUI(xe::ui::PlatformWindow* window, TracePlayer& player,
                   Memory* memory, gl4::GL4Shader* shader,
                   ShaderDisplayType display_type) {
   // Must be prepared for advanced display modes.
@@ -1394,7 +1393,7 @@ static const char* kEndiannessNames[] = {
     "unspecified endianness", "8-in-16", "8-in-32", "16-in-32",
 };
 
-void DrawStateUI(xe::ui::MainWindow* window, TracePlayer& player,
+void DrawStateUI(xe::ui::PlatformWindow* window, TracePlayer& player,
                  Memory* memory) {
   auto gs = static_cast<gl4::GL4GraphicsSystem*>(player.graphics_system());
   auto cp = gs->command_processor();
@@ -2034,8 +2033,8 @@ void DrawStateUI(xe::ui::MainWindow* window, TracePlayer& player,
   ImGui::End();
 }
 
-void DrawPacketDisassemblerUI(xe::ui::MainWindow* window, TracePlayer& player,
-                              Memory* memory) {
+void DrawPacketDisassemblerUI(xe::ui::PlatformWindow* window,
+                              TracePlayer& player, Memory* memory) {
   ImGui::SetNextWindowCollapsed(true, ImGuiSetCond_FirstUseEver);
   ImGui::SetNextWindowPos(ImVec2(float(window->width()) - 500 - 5, 5),
                           ImGuiSetCond_FirstUseEver);
@@ -2176,7 +2175,8 @@ void DrawPacketDisassemblerUI(xe::ui::MainWindow* window, TracePlayer& player,
   ImGui::End();
 }
 
-void DrawUI(xe::ui::MainWindow* window, TracePlayer& player, Memory* memory) {
+void DrawUI(xe::ui::PlatformWindow* window, TracePlayer& player,
+            Memory* memory) {
   // ImGui::ShowTestWindow();
 
   DrawControllerUI(window, player, memory);
@@ -2212,7 +2212,7 @@ int trace_viewer_main(std::vector<std::wstring>& args) {
     // Normalize the path and make absolute.
     auto abs_path = xe::to_absolute_path(path);
 
-    auto window = emulator->main_window();
+    auto window = emulator->display_window();
     auto loop = window->loop();
     auto file_name = xe::find_name_from_path(path);
     window->set_title(std::wstring(L"Xenia GPU Trace Viewer: ") + file_name);
@@ -2306,7 +2306,7 @@ int trace_viewer_main(std::vector<std::wstring>& args) {
     graphics_system->RequestSwap();
 
     // Wait until we are exited.
-    emulator->main_window()->loop()->AwaitQuit();
+    emulator->display_window()->loop()->AwaitQuit();
 
     ImImpl_Shutdown();
   }
diff --git a/src/xenia/kernel/xam_ui.cc b/src/xenia/kernel/xam_ui.cc
index 6da922b07..81d2a9445 100644
--- a/src/xenia/kernel/xam_ui.cc
+++ b/src/xenia/kernel/xam_ui.cc
@@ -67,7 +67,7 @@ SHIM_CALL XamShowMessageBoxUI_shim(PPCContext* ppc_context,
     TASKDIALOGCONFIG config = {0};
     config.cbSize = sizeof(config);
     config.hInstance = GetModuleHandle(nullptr);
-    config.hwndParent = kernel_state->emulator()->main_window()->hwnd();
+    config.hwndParent = kernel_state->emulator()->display_window()->hwnd();
     config.dwFlags = TDF_ALLOW_DIALOG_CANCELLATION |   // esc to exit
                      TDF_POSITION_RELATIVE_TO_WINDOW;  // center in window
     config.dwCommonButtons = 0;
@@ -120,7 +120,7 @@ SHIM_CALL XamShowDirtyDiscErrorUI_shim(PPCContext* ppc_context,
   XELOGD("XamShowDirtyDiscErrorUI(%d)", user_index);
 
   int button_pressed = 0;
-  TaskDialog(kernel_state->emulator()->main_window()->hwnd(),
+  TaskDialog(kernel_state->emulator()->display_window()->hwnd(),
              GetModuleHandle(nullptr), L"Disc Read Error",
              L"Game is claiming to be unable to read game data!", nullptr,
              TDCBF_CLOSE_BUTTON, TD_ERROR_ICON, &button_pressed);
diff --git a/src/xenia/ui/main_window.cc b/src/xenia/ui/main_window.cc
index f2b40276e..95be90a2a 100644
--- a/src/xenia/ui/main_window.cc
+++ b/src/xenia/ui/main_window.cc
@@ -42,21 +42,22 @@ enum Commands {
 const std::wstring kBaseTitle = L"xenia";
 
 MainWindow::MainWindow(Emulator* emulator)
-    : PlatformWindow(kBaseTitle),
+    : PlatformWindow(&loop_, kBaseTitle),
       emulator_(emulator),
-      main_menu_(MenuItem::Type::kNormal),
-      fullscreen_(false) {}
+      main_menu_(MenuItem::Type::kNormal) {}
 
 MainWindow::~MainWindow() = default;
 
-void MainWindow::Start() {
+std::unique_ptr<PlatformWindow> MainWindow::Create(Emulator* emulator) {
+  std::unique_ptr<MainWindow> main_window(new MainWindow(emulator));
+
   xe::threading::Fence fence;
 
-  loop_.Post([&]() {
+  main_window->loop()->Post([&main_window, &fence]() {
     xe::threading::set_name("Win32 Loop");
     xe::Profiler::ThreadEnter("Win32 Loop");
 
-    if (!Initialize()) {
+    if (!main_window->Initialize()) {
       XEFATAL("Failed to initialize main window");
       exit(1);
     }
@@ -65,6 +66,8 @@ void MainWindow::Start() {
   });
 
   fence.Wait();
+
+  return std::unique_ptr<PlatformWindow>(main_window.release());
 }
 
 bool MainWindow::Initialize() {
@@ -98,8 +101,8 @@ bool MainWindow::Initialize() {
       } break;
       case 0x1B: {  // VK_ESCAPE
                     // Allow users to escape fullscreen (but not enter it).
-        if (fullscreen_) {
-          ToggleFullscreen();
+        if (is_fullscreen()) {
+          ToggleFullscreen(false);
         }
       } break;
 
@@ -187,7 +190,7 @@ bool MainWindow::Initialize() {
   }
   main_menu_.AddChild(std::move(help_menu));
 
-  SetMenu(&main_menu_);
+  set_menu(&main_menu_);
 
   Resize(1280, 720);
 
@@ -204,11 +207,6 @@ void MainWindow::UpdateTitle() {
   set_title(title);
 }
 
-void MainWindow::ToggleFullscreen() {
-  fullscreen_ = !fullscreen_;
-  SetFullscreen(fullscreen_);
-}
-
 void MainWindow::OnClose() {
   loop_.Quit();
 
@@ -250,7 +248,7 @@ void MainWindow::OnCommand(int id) {
     } break;
 
     case IDC_WINDOW_FULLSCREEN: {
-      ToggleFullscreen();
+      ToggleFullscreen(!is_fullscreen());
     } break;
 
     case IDC_HELP_WEBSITE: {
diff --git a/src/xenia/ui/main_window.h b/src/xenia/ui/main_window.h
index 7db737180..3f5a9bbcc 100644
--- a/src/xenia/ui/main_window.h
+++ b/src/xenia/ui/main_window.h
@@ -10,15 +10,10 @@
 #ifndef XENIA_UI_MAIN_WINDOW_H_
 #define XENIA_UI_MAIN_WINDOW_H_
 
+#include "xenia/ui/platform.h"
 #include "xenia/ui/window.h"
 #include "xenia/xbox.h"
 
-// TODO(benvanik): only on windows.
-#include "xenia/ui/win32/win32_file_picker.h"
-#include "xenia/ui/win32/win32_loop.h"
-#include "xenia/ui/win32/win32_menu_item.h"
-#include "xenia/ui/win32/win32_window.h"
-
 namespace xe {
 class Emulator;
 }  // namespace xe
@@ -26,26 +21,20 @@ class Emulator;
 namespace xe {
 namespace ui {
 
-using PlatformLoop = xe::ui::win32::Win32Loop;
-using PlatformWindow = xe::ui::win32::Win32Window;
-using PlatformMenu = xe::ui::win32::Win32MenuItem;
-using PlatformFilePicker = xe::ui::win32::Win32FilePicker;
-
 class MainWindow : public PlatformWindow {
  public:
-  explicit MainWindow(Emulator* emulator);
   ~MainWindow() override;
 
-  Emulator* emulator() const { return emulator_; }
-  PlatformLoop* loop() { return &loop_; }
+  static std::unique_ptr<PlatformWindow> Create(Emulator* emulator);
 
-  void Start();
+  Emulator* emulator() const { return emulator_; }
 
  private:
+  explicit MainWindow(Emulator* emulator);
+
   bool Initialize();
 
   void UpdateTitle();
-  void ToggleFullscreen();
 
   void OnClose() override;
   void OnCommand(int id) override;
@@ -53,7 +42,6 @@ class MainWindow : public PlatformWindow {
   Emulator* emulator_;
   PlatformLoop loop_;
   PlatformMenu main_menu_;
-  bool fullscreen_;
 };
 
 }  // namespace ui
diff --git a/src/xenia/ui/platform.h b/src/xenia/ui/platform.h
new file mode 100644
index 000000000..6ba60300f
--- /dev/null
+++ b/src/xenia/ui/platform.h
@@ -0,0 +1,31 @@
+#pragma once
+/**
+******************************************************************************
+* Xenia : Xbox 360 Emulator Research Project                                 *
+******************************************************************************
+* Copyright 2014 Ben Vanik. All rights reserved.                             *
+* Released under the BSD license - see LICENSE in the root for more details. *
+******************************************************************************
+*/
+
+#ifndef XENIA_UI_PLATFORM_H_
+#define XENIA_UI_PLATFORM_H_
+
+// TODO(benvanik): only on windows.
+#include "xenia/ui/win32/win32_file_picker.h"
+#include "xenia/ui/win32/win32_loop.h"
+#include "xenia/ui/win32/win32_menu_item.h"
+#include "xenia/ui/win32/win32_window.h"
+
+namespace xe {
+namespace ui {
+
+using PlatformFilePicker = xe::ui::win32::Win32FilePicker;
+using PlatformLoop = xe::ui::win32::Win32Loop;
+using PlatformMenu = xe::ui::win32::Win32MenuItem;
+using PlatformWindow = xe::ui::win32::Win32Window;
+
+}  // namespace ui
+}  // namespace xe
+
+#endif  // XENIA_UI_PLATFORM_H_
diff --git a/src/xenia/ui/win32/win32_window.cc b/src/xenia/ui/win32/win32_window.cc
index 97d37225a..d335956ee 100644
--- a/src/xenia/ui/win32/win32_window.cc
+++ b/src/xenia/ui/win32/win32_window.cc
@@ -20,12 +20,10 @@ namespace xe {
 namespace ui {
 namespace win32 {
 
-Win32Window::Win32Window(const std::wstring& title)
-    : Window(title), closing_(false), fullscreen_(false) {
-  menu_ = nullptr;
-}
+Win32Window::Win32Window(Loop* loop, const std::wstring& title)
+    : Window(loop, title) {}
 
-Win32Window::~Win32Window() {}
+Win32Window::~Win32Window() = default;
 
 bool Win32Window::Initialize() {
   Create();
@@ -160,8 +158,15 @@ void Win32Window::ResizeToFill(int32_t pad_left, int32_t pad_top,
   // TODO(benvanik): fullscreen.
 }
 
-void Win32Window::SetFullscreen(bool fullscreen) {
-  fullscreen_ = fullscreen;
+bool Win32Window::is_fullscreen() const {
+  DWORD style = GetWindowLong(hwnd_, GWL_STYLE);
+  return (style & WS_OVERLAPPEDWINDOW) != WS_OVERLAPPEDWINDOW;
+}
+
+void Win32Window::ToggleFullscreen(bool fullscreen) {
+  if (fullscreen == is_fullscreen()) {
+    return;
+  }
 
   DWORD style = GetWindowLong(hwnd_, GWL_STYLE);
   if (fullscreen) {
@@ -200,7 +205,7 @@ void Win32Window::OnClose() {
 void Win32Window::OnSetMenu(MenuItem* menu) {
   Win32MenuItem* win_menu = reinterpret_cast<Win32MenuItem*>(menu);
   // Don't actually set the menu if we're fullscreen. We'll do that later.
-  if (win_menu && !fullscreen_) {
+  if (win_menu && !is_fullscreen()) {
     ::SetMenu(hwnd_, win_menu->handle());
   }
 }
diff --git a/src/xenia/ui/win32/win32_window.h b/src/xenia/ui/win32/win32_window.h
index eddb2f744..b655e46c1 100644
--- a/src/xenia/ui/win32/win32_window.h
+++ b/src/xenia/ui/win32/win32_window.h
@@ -22,7 +22,7 @@ namespace win32 {
 
 class Win32Window : public Window<Win32Control> {
  public:
-  Win32Window(const std::wstring& title);
+  Win32Window(Loop* loop, const std::wstring& title);
   ~Win32Window() override;
 
   bool Initialize() override;
@@ -35,7 +35,8 @@ class Win32Window : public Window<Win32Control> {
   void ResizeToFill(int32_t pad_left, int32_t pad_top, int32_t pad_right,
                     int32_t pad_bottom) override;
 
-  void SetFullscreen(bool fullscreen) override;
+  bool is_fullscreen() const override;
+  void ToggleFullscreen(bool fullscreen) override;
 
  protected:
   bool Create() override;
@@ -49,9 +50,8 @@ class Win32Window : public Window<Win32Control> {
  private:
   void EnableMMCSS();
 
-  bool closing_;
+  bool closing_ = false;
 
-  bool fullscreen_;
   WINDOWPLACEMENT windowed_pos_;
 };
 
diff --git a/src/xenia/ui/window.h b/src/xenia/ui/window.h
index aa98f2175..691335250 100644
--- a/src/xenia/ui/window.h
+++ b/src/xenia/ui/window.h
@@ -14,6 +14,7 @@
 
 #include "xenia/base/delegate.h"
 #include "xenia/ui/control.h"
+#include "xenia/ui/loop.h"
 #include "xenia/ui/menu_item.h"
 #include "xenia/ui/ui_event.h"
 
@@ -27,6 +28,8 @@ class Window : public T {
 
   virtual bool Initialize() { return true; }
 
+  Loop* loop() const { return loop_; }
+
   const std::wstring& title() const { return title_; }
   virtual bool set_title(const std::wstring& title) {
     if (title == title_) {
@@ -36,6 +39,15 @@ class Window : public T {
     return true;
   }
 
+  MenuItem* menu() const { return menu_; }
+  void set_menu(MenuItem* menu) {
+    if (menu == menu_) {
+      return;
+    }
+    menu_ = menu;
+    OnSetMenu(menu);
+  }
+
   void Close() {
     auto e = UIEvent(this);
     on_closing(e);
@@ -46,13 +58,8 @@ class Window : public T {
     on_closed(e);
   }
 
-  virtual void SetMenu(MenuItem* menu) {
-    menu_ = menu;
-
-    OnSetMenu(menu);
-  }
-
-  virtual void SetFullscreen(bool fullscreen) {}
+  virtual bool is_fullscreen() const { return false; }
+  virtual void ToggleFullscreen(bool fullscreen) {}
 
  public:
   Delegate<UIEvent> on_shown;
@@ -61,7 +68,8 @@ class Window : public T {
   Delegate<UIEvent> on_closed;
 
  protected:
-  Window(const std::wstring& title) : T(0), title_(title) {}
+  Window(Loop* loop, const std::wstring& title)
+      : T(0), loop_(loop), title_(title) {}
 
   void OnShow() {
     if (is_visible_) {
@@ -87,8 +95,9 @@ class Window : public T {
 
   virtual void OnCommand(int id) {}
 
-  MenuItem* menu_;
+  Loop* loop_ = nullptr;
   std::wstring title_;
+  MenuItem* menu_ = nullptr;
 };
 
 }  // namespace ui
diff --git a/src/xenia/xenia_main.cc b/src/xenia/xenia_main.cc
index 22c6f8934..d32240b7c 100644
--- a/src/xenia/xenia_main.cc
+++ b/src/xenia/xenia_main.cc
@@ -15,7 +15,6 @@
 #include "xenia/kernel/kernel.h"
 #include "xenia/profiling.h"
 #include "xenia/ui/file_picker.h"
-#include "xenia/ui/main_window.h"
 
 DEFINE_string(target, "", "Specifies the target .xex or .iso to execute.");
 
@@ -61,7 +60,7 @@ int xenia_main(std::vector<std::wstring>& args) {
         //{ L"Content Package (*.xcp)", L"*.xcp" },
         {L"All Files (*.*)", L"*.*"},
     });
-    if (file_picker.Show(emulator->main_window()->hwnd())) {
+    if (file_picker.Show(emulator->display_window()->hwnd())) {
       auto selected_files = file_picker.selected_files();
       if (!selected_files.empty()) {
         path = selected_files[0];
@@ -80,7 +79,7 @@ int xenia_main(std::vector<std::wstring>& args) {
     }
 
     // Wait until we are exited.
-    emulator->main_window()->loop()->AwaitQuit();
+    emulator->display_window()->loop()->AwaitQuit();
   }
 
   emulator.reset();