How can I use GestureRecognizer in a Xaml based app?

Question

I've encountered a problem when I'm trying to use gestures in my app:
I'm trying to retrieve info from input on a rectangle using GestureRecognizer responding to the PointerPressed event. When the user taps on it, the textblock shows information. However, I failed to get any info after following the code samples.
There was no response and through debugging, I found the tapped event was not responded to.
First, I added:
Platform::Agile<Windows::UI::Input::GestureRecognizer> m_gestureRecognizer;
in the header of the class.
And in the constructor:
MainPage::MainPage()
InitializeComponent();
m_gestureRecognizer = ref new GestureRecognizer();
m_gestureRecognizer->GestureSettings =
GestureSettings::DoubleTap | GestureSettings::Tap;
m_gestureRecognizer->Tapped += ref new Windows::Foundation::TypedEventHandler<Windows::UI::Input::GestureRecognizer ^, Windows::UI::Input::TappedEventArgs ^>(this, &App4::MainPage::OnTapped);
Next, I responded to the PointerPressed event:
void App4::MainPage::OnPressed(Platform::Object^ sender, Windows::UI::Xaml::Input::PointerRoutedEventArgs^ e)
unsigned int id = e->Pointer->PointerId;//debug breakpoint
m_gestureRecognizer->ProcessDownEvent(Windows::UI::Input::PointerPoint::GetCurrentPoint(id));
e->Handled = true;
But when I came to the Tapped event, nothing happened:
void MainPage::OnTapped(GestureRecognizer^ gesrec, Windows::UI::Input::TappedEventArgs^ args)
int i = args->TapCount;//debug breakpoint
if (i == 2)
info->Text = "You double-tapped the point at X: " + args->Position.X + ", Y: " + args->Position.Y + ".";
else
info->Text = "You tapped the point X: " + args->Position.X + ", Y: " + args->Position.Y + ".";
Why there was no info when I tapped the rectangle? Do I lack of something in the code? 

Answer 1

Oh, it's very kind of you! Thank you so much and the problem has been solved by adding two handlers:
void App4::MainPage::OnMoved(Platform::Object^ sender, Windows::UI::Xaml::Input::PointerRoutedEventArgs^ e)
m_gestureRecognizer->ProcessMoveEvents(e->GetIntermediatePoints(wpRect/*name of the rectangle*/));
void App4::MainPage::OnReleased(Platform::Object^ sender, Windows::UI::Xaml::Input::PointerRoutedEventArgs^ e)
m_gestureRecognizer->ProcessUpEvent(Windows::UI::Input::PointerPoint::GetCurrentPoint(e->Pointer->PointerId));
I've been haunted by this issue for days...