SAI的拙劣仿制：很多人永远也不会尝试的东西

MainWindow.xaml

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<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

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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。