SAI的拙劣仿制：很多人永远也不会尝试的东西

MainWindow.xaml

<Window x:Class="wpfStylusDemo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="600" Width="800" PreviewKeyDown="Window_PreviewKeyDown"
        Background="{StaticResource {x:Static SystemColors.AppWorkspaceBrushKey}}">
  <InkCanvas Width="640" Height="480" VerticalAlignment="Center" HorizontalAlignment="Center" Name="inkCanvas1">
    <InkCanvas.LayoutTransform>
      <RotateTransform/>
    </InkCanvas.LayoutTransform>
  </InkCanvas>
</Window>

MainWindow.xaml.cs

using System.Windows;
using System.Windows.Input;
using System.Windows.Media;

namespace wpfStylusDemo
{
  /// 
  /// MainWindow.xaml 的交互逻辑
  /// 
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();
    }

    const double c_angle = 15;
    private void Window_PreviewKeyDown(object sender, KeyEventArgs e)
    {
      if (Key.End == e.Key || Key.Delete == e.Key)
      {
        var rt = inkCanvas1.LayoutTransform as RotateTransform;
        double angle = rt.Angle;
        if (Key.Delete == e.Key)
          angle -= c_angle;
        else
          angle += c_angle;
        rt.Angle = angle % 360;
      }
    }
  }
}

奇怪的是这些人却总是在抱怨技术变化得太快。