Manipulation_started doesn't work on a map - events

Question

Hi to all I'm trying to set a listener for the ManipulationStarted, ManipulationDelta, ManipulationCompleted of a map to detect if the user drag a map around, but looks like none of those events are launched if I drag the map. If I set a tap listener for the map ManipulationStarted is correctly launched.
What I'm doing wrong?
xaml code:
<Controls:Map x:Name="myMap"
Grid.Row="0"
Loaded="myMap_Loaded"
ManipulationDelta="myMap_ManipulationDelta"
ManipulationCompleted="myMap_ManipulationCompleted"
ManipulationStarted="myMap_ManipulationStarted"
Tap="myMap_Tap">
code behind:
private void myMap_ManipulationDelta(object sender, System.Windows.Input.ManipulationDeltaEventArgs e)
{
Debug.WriteLine("Event:: MyMap_manipulationdelta");
}
private void myMap_ManipulationCompleted(object sender, System.Windows.Input.ManipulationCompletedEventArgs e)
{
Debug.WriteLine("Event:: MyMap_manipulationcompleted");
}
private void myMap_ManipulationStarted(object sender, System.Windows.Input.ManipulationStartedEventArgs e)
{
Debug.WriteLine("Event:: MyMap_manipulationstarted");
}
private void myMap_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
Debug.WriteLine("Event:: MyMap_tap");
}
I'm on a normal page, no pivot or panorama.

Answer 1

I'm afraid that you won't be able to handle those events because Map control intercepts them. Although there is a property UseOptimizedManipulationRouting, but as I've tested it - it doesn't help much in this situation.
I dont't know what you are trying to achieve, but if you don't need ManipulationDeltaEventArgs then maybe you consider using different events such as: MouseEnter, ResolveCompleted and CenterChanged.
If you need them then as JustinAngel suggested here you can follow these instructions and use Touch.FrameReported event for your purpose.
EDIT - code sample
If I've understood you properly, you would like to know when the User touches the Map, MouseEnter won't be the best choice as it will work only first time, then if mouse didn't leave the Map (user touched somewhere else), it won't fire again. Better solution here (following instructions above) can be such a code:
public MainPage()
{
InitializeComponent();
Touch.FrameReported += Touch_FrameReported;
}
private void Touch_FrameReported(object sender, TouchFrameEventArgs e)
{
TouchPoint point = e.GetPrimaryTouchPoint(myMap);
if (point.Action == TouchAction.Move && point.Position.Y > 0)
{
MessageBox.Show("User is Moving Finger over the Map!");
}
}