Window loads and has nav bar :o

Now to add some content

src/main.cpp

@@ -3,12 +3,13 @@
 #include <winrt/base.h>
 #include <winrt/Microsoft.UI.Xaml.h>
 #include <winrt/Microsoft.UI.Xaml.Controls.h>
-#include <winrt/Windows.Foundation.Collections.h>
+#include <winrt/Microsoft.UI.Xaml.Markup.h>
+#include <winrt/Microsoft.UI.Xaml.XamlTypeInfo.h>
 #include <winrt/Microsoft.Windows.ApplicationModel.DynamicDependency.h>
-#include <winrt/Windows.UI.Xaml.Hosting.h>
+#include <winrt/Windows.Foundation.Collections.h>
 
 // Undocumented static initializer for MddBootstrap; using it instead of documented
-// APIs for now,
+// APIs for now, to be closer to what Visual Studio does
 #include <MddBootstrapAutoInitializer.cpp>
 
 namespace muxc = winrt::Microsoft::UI::Xaml::Controls;
@@ -22,26 +23,40 @@ struct MainWindow : public winrt::Microsoft::UI::Xaml::WindowT<MainWindow>
 public:
   MainWindow()
   {
-    mNav.Header(winrt::box_value(L"Header"));
+    mNav.Header(winrt::box_value(L"CMake, C++/WinRT, and WinUI 3 Demo App"));
     mNav.Content(mContent);
     mNav.IsSettingsVisible(false);
 
     muxc::NavigationViewItem item1;
     item1.Content(winrt::box_value(L"Item 1"));
     item1.Icon(muxc::SymbolIcon(muxc::Symbol::Play));
-
     mNav.MenuItems().Append(item1);
-    // This fails due to Microsoft.UI.Xaml.Controls.XamlControlResources not
-    // being loaded, but loading it fails :(
+
+    muxc::NavigationViewItem item2;
+    item2.Content(winrt::box_value(L"Item 2"));
+    item2.Icon(muxc::SymbolIcon(muxc::Symbol::Copy));
+    mNav.MenuItems().Append(item2);
+
+    muxc::NavigationViewItem item3;
+    item3.Content(winrt::box_value(L"Item 3"));
+    item3.Icon(muxc::SymbolIcon(muxc::Symbol::Paste));
+    mNav.MenuItems().Append(item3);
+
+    mNav.IsSettingsVisible(true);
+
     Content(mNav);
   }
 };
 
-struct MyApp : public winrt::Microsoft::UI::Xaml::ApplicationT<MyApp>
+struct MyApp : public winrt::Microsoft::UI::Xaml::ApplicationT<MyApp, winrt::Microsoft::UI::Xaml::Markup::IXamlMetadataProvider>
 {
+private:
+  winrt::Microsoft::UI::Xaml::XamlTypeInfo::XamlControlsXamlMetaDataProvider mXamlControlsMetaDataProvider;
+
+public:
   MyApp()
   {
-    ::winrt::Windows::Foundation::Uri resourceLocator{ L"ms-appx:///App.xaml" };
+    ::winrt::Windows::Foundation::Uri resourceLocator{L"ms-appx:///App.xaml"};
     ::winrt::Microsoft::UI::Xaml::Application::LoadComponent(*this, resourceLocator);
 
     UnhandledException([this](IInspectable const &, winrt::Microsoft::UI::Xaml::UnhandledExceptionEventArgs const &e)
@@ -58,6 +73,23 @@ struct MyApp : public winrt::Microsoft::UI::Xaml::ApplicationT<MyApp>
     // ... if it werent' for that exception, I'd add it to `Resources()` here
     winrt::make<MainWindow>().Activate();
   }
+
+  winrt::Microsoft::UI::Xaml::Markup::IXamlType
+  GetXamlType(const winrt::hstring& fullName)
+  {
+    return mXamlControlsMetaDataProvider.GetXamlType(fullName);
+  }
+
+  winrt::Microsoft::UI::Xaml::Markup::IXamlType
+  GetXamlType(const winrt::Windows::UI::Xaml::Interop::TypeName& type)
+  {
+    return mXamlControlsMetaDataProvider.GetXamlType(type);
+  }
+
+  winrt::com_array<winrt::Microsoft::UI::Xaml::Markup::XmlnsDefinition> GetXmlnsDefinitions()
+  {
+    return mXamlControlsMetaDataProvider.GetXmlnsDefinitions();
+  }
 };
 
 int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)