wpf stylus mouse event - wpf

Question

When button1 gets tapped by the stylus test method gets called twice, even though I am setting the Handled property in the stylusdown event. Is there a way to have the stylus event not propegate a secondary button click event?
namespace DialogTest
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
test(sender, e);
}
private void button1_StylusDown(object sender, StylusDownEventArgs e)
{
test(sender, e);
e.Handled = true;
}
private void test(object e, EventArgs env)
{
Console.WriteLine(e.ToString(), env.ToString());
Console.WriteLine("clicking");
}
}

Answer 1

If you look at this MSDN Input overview documentation. you will see the fact the both events are called.
From above link:
Because the stylus can act as a mouse, applications that support only mouse input can still obtain some level of stylus support automatically. When the stylus is used in such a manner, the application is given the opportunity to handle the appropriate stylus event and then handles the corresponding mouse event. In addition, higher-level services such as ink input are also available through the stylus device abstraction.
Since it does give you the order the events are called you can create a Boolean variable, set it in the StylusDown EventHandler, then check in your Button_Click EventHandler if it is true, set it to false then exit the Handler.
something like this.
public partial class Window1 : Window
{
bool StylusDown;
public Window1()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
if(StylusDown)
{
StylusDown=false;
return;
}
test(sender, e);
}
private void button1_StylusDown(object sender, StylusDownEventArgs e)
{
StylusDown =true;
test(sender, e);
}
private void test(object e, EventArgs env)
{
Console.WriteLine(e.ToString(), env.ToString());
Console.WriteLine("clicking");
}
}
There may be a better way of accomplishing this, but this is was the first thing that came to mind.

Answer 2

MouseEventArgs has a property called StylusDevice that will be not null if the event originated from a stylus or touch event.
private void button1_Click(object sender, MouseButtonEventArgs e)
{
if (e.StylusDevice != null) return;
...
}