void OnPressAndTap( object sender, PressAndTapEventArgs e )
{
string msg = string.Format( "PressAndTap Loc:({0},{1}) Distance:{2})", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
if ( ++_backBrush >= _backBrushes.Length )
{
_backBrush = 0;
}
Invalidate();
}
}