From 5d7dcef619bd1f866684b57351dde2efbda6959c Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 8 Feb 2022 21:15:31 +0800
Subject: ...

---
 include/cru/ui/host/WindowHost.h |  8 +++++---
 src/ui/host/WindowHost.cpp       | 10 ++++------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/cru/ui/host/WindowHost.h b/include/cru/ui/host/WindowHost.h
index caa50397..8a8f1da5 100644
--- a/include/cru/ui/host/WindowHost.h
+++ b/include/cru/ui/host/WindowHost.h
@@ -29,7 +29,9 @@ class CRU_UI_API WindowHost : public Object {
   ~WindowHost() override;
 
  public:
-  platform::gui::INativeWindow* GetNativeWindow() { return native_window_; }
+  platform::gui::INativeWindow* GetNativeWindow() {
+    return native_window_.get();
+  }
 
   // Mark the layout as invalid, and arrange a re-layout later.
   // This method could be called more than one times in a message cycle. But
@@ -103,7 +105,7 @@ class CRU_UI_API WindowHost : public Object {
   void SetOverrideCursor(std::shared_ptr<platform::gui::ICursor> cursor);
 
  private:
-  gsl::not_null<platform::gui::INativeWindow*> CreateNativeWindow();
+  std::unique_ptr<platform::gui::INativeWindow> CreateNativeWindow();
 
   //*************** region: native messages ***************
   void OnNativeDestroy(platform::gui::INativeWindow* window, std::nullptr_t);
@@ -140,7 +142,7 @@ class CRU_UI_API WindowHost : public Object {
   controls::Control* root_control_ = nullptr;
   render::RenderObject* root_render_object_ = nullptr;
 
-  platform::gui::INativeWindow* native_window_ = nullptr;
+  std::unique_ptr<platform::gui::INativeWindow> native_window_;
 
   std::unique_ptr<LayoutPaintCycler> layout_paint_cycler_;
 
diff --git a/src/ui/host/WindowHost.cpp b/src/ui/host/WindowHost.cpp
index 2d09a895..4373afe9 100644
--- a/src/ui/host/WindowHost.cpp
+++ b/src/ui/host/WindowHost.cpp
@@ -115,19 +115,17 @@ WindowHost::WindowHost(controls::Control* root_control)
 
   this->layout_paint_cycler_ = std::make_unique<LayoutPaintCycler>(this);
 
-  CreateNativeWindow();
+  native_window_ = CreateNativeWindow();
 }
 
-WindowHost::~WindowHost() { delete native_window_; }
+WindowHost::~WindowHost() {}
 
-gsl::not_null<platform::gui::INativeWindow*> WindowHost::CreateNativeWindow() {
+std::unique_ptr<platform::gui::INativeWindow> WindowHost::CreateNativeWindow() {
   const auto ui_application = IUiApplication::GetInstance();
 
   auto native_window = ui_application->CreateWindow();
   Ensures(native_window);
 
-  native_window_ = native_window;
-
   BindNativeEvent(this, native_window, native_window->DestroyEvent(),
                   &WindowHost::OnNativeDestroy, event_revoker_guards_);
   BindNativeEvent(this, native_window, native_window->PaintEvent(),
@@ -153,7 +151,7 @@ gsl::not_null<platform::gui::INativeWindow*> WindowHost::CreateNativeWindow() {
 
   native_window_change_event_.Raise(native_window);
 
-  return native_window_;
+  return std::unique_ptr<INativeWindow>(native_window);
 }
 
 void WindowHost::InvalidatePaint() { layout_paint_cycler_->InvalidatePaint(); }
-- 
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