Why I am getting C3646 on an IAsyncAction declaration?

[rbaprado]

Probably a dumb question (WinRT noob), but, here is goes...

The code from "App.xaml.h" is:

namespace winrt::Precog::implementation
{
    struct App : AppT<App>
    {
        App();

        void OnLaunched(Microsoft::UI::Xaml::LaunchActivatedEventArgs const&);

    private:
        std::wstring cfgDatabase = L"";
        winrt::Microsoft::UI::Xaml::Window window{ nullptr };

        IAsyncAction loadSettings();
    };
}

When I try to compile, Visual Studio gives me a C3646 (unknown override specifier) at the IAsyncAction declaration?

The loadSettings implementation is:

IAsyncAction App::loadSettings()
{
    PHKEY regKey = NULL;
    LSTATUS regResult;

    regResult = RegCreateKey(HKEY_CURRENT_USER, L"Precog", regKey);
    if (regResult != ERROR_SUCCESS)
    {
        ContentDialog errorDialog = ContentDialog();
        errorDialog.Title(box_value(L"Erro"));
        errorDialog.Content(box_value(L"Pateta"));
        errorDialog.CloseButtonText(L"Ok");
        errorDialog.XamlRoot(window.Content().XamlRoot());
        auto result = co_await errorDialog.ShowAsync();
    }
    else
    {
        co_return;
    }
}

[rbaprado]

Got it. It seemed to be a namespace mismatch, since changing the declaration to:

winrt::Windows::Foundation::IAsyncAction loadSettings();

Solved the problem. The interesting bit is that Intellisense does not catch the error (no red line underneath the type), only the compiler does.