本文整理汇总了C#中System.Windows.Input.TouchDevice类的典型用法代码示例。如果您正苦于以下问题：C# TouchDevice类的具体用法？C# TouchDevice怎么用？C# TouchDevice使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
TouchDevice类属于System.Windows.Input命名空间，在下文中一共展示了TouchDevice类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Point
//引入命名空间
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Controls;
namespace WpfTouchEventsSample
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
// Variables to track the first two touch points
// and the ID of the first touch point.
private Point pt1, pt2 = new Point();
private int firstTouchId = -1;
public MainWindow()
{
InitializeComponent();
}
private void canvas_TouchDown(object sender, TouchEventArgs e)
{
Canvas _canvas = (Canvas)sender as Canvas;
if (_canvas != null)
{
_canvas.Children.Clear();
e.TouchDevice.Capture(_canvas);
// Record the ID of the first touch point if it hasn't been recorded.
if (firstTouchId == -1)
firstTouchId = e.TouchDevice.Id;
}
}
private void canvas_TouchMove(object sender, TouchEventArgs e)
{
Canvas _canvas = (Canvas)sender as Canvas;
if (_canvas != null)
{
TouchPoint tp = e.GetTouchPoint(_canvas);
// This is the first touch point; just record its position.
if (e.TouchDevice.Id == firstTouchId)
{
pt1.X = tp.Position.X;
pt1.Y = tp.Position.Y;
}
// This is not the first touch point; draw a line from the first point to this one.
else if (e.TouchDevice.Id != firstTouchId)
{
pt2.X = tp.Position.X;
pt2.Y = tp.Position.Y;
Line _line = new Line();
_line.Stroke = new RadialGradientBrush(Colors.White, Colors.Black);
_line.X1 = pt1.X;
_line.X2 = pt2.X;
_line.Y1 = pt1.Y;
_line.Y2 = pt2.Y;
_line.StrokeThickness = 2;
_canvas.Children.Add(_line);
}
}
}
private void canvas_TouchUp(object sender, TouchEventArgs e)
{
Canvas _canvas = (Canvas)sender as Canvas;
if (_canvas != null && e.TouchDevice.Captured == _canvas)
{
_canvas.ReleaseTouchCapture(e.TouchDevice);
}
}
}
}