Visual Studio 2017 VC++ UWPでのTreeView xaml <Grid> <TreeView Name="TreeView1" Loaded="TreeView1_Loaded" ItemInvoked="TreeView1_ItemInvoked"/> </Grid> VC++コード void test::TreeView1_Loaded(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) { #define IntToStr( ii ) static_cast