C＃WPF设置˚F热键

Question

我试图做一个小的应用程序，当F功能键被按下（F1，F2 F3 &在目前情况下）执行特定的功能。我刚刚在C＃中开始使用热键，但似乎无法弄清楚。我尝试将System.Windows.Input.KeyEventArgs chaning到System.Windows.Forms.KeyEventArgs，但它不起作用。我不知道这是否是最好的/正确的方式来做到这一点，但从逻辑上来说，这对我来说是有意义的。 activeTracker就像我的循环触发器，而其他F键发送文本命令。

namespace WpfApplication1 
{ 
    public partial class MainWindow : Window 
    { 
     public MainWindow() 
     { 
      InitializeComponent(); 
     } 

     [DllImport("user32.dll", CharSet = CharSet.Unicode)] 
     public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); 

     [DllImport("user32.dll")] 
     public static extern bool SetForegroundWindow(IntPtr hWnd); 

     bool activeTracker = false; 

     private void btnActive_Click(object sender, RoutedEventArgs e) 
     { 
      while (activeTracker) 
      { 
       IntPtr WindowHandle = FindWindow(txtClassName.Text, txtWindowTitle.Text); 
       if (WindowHandle == IntPtr.Zero) 
       { 
        System.Windows.MessageBox.Show(txtWindowTitle.Text + " does not exist"); 
        return; 
       } 

       SetForegroundWindow(WindowHandle); 

       SendKeys.SendWait(txtMessage1.Text + "{ENTER}"); 
       System.Threading.Thread.Sleep(TimeSpan.FromSeconds(1)); 
       SendKeys.SendWait(txtMessage2.Text + "{ENTER}"); 
      } 
     } 

     private void Window_KeyDown(object sender, System.Windows.Input.KeyEventArgs e) 
     { 
      if (e.KeyCode == "F1") 
      { 
       activateTracker = True; 
       return; 
      }else if(e.KeyCode == "F2") 
      { 
       activateTracker = False; 
       return; 
      }else if(e.KeyCode == "F3") 
      { 
       SendKeys.SendWait(txtMessage5.Text + "{ENTER}"); 
      } 
     } 
    } 
} 


<Window x:Class="WpfApplication1.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     Title="MainWindow" Height="350" Width="525" KeyDown="Window_KeyDown"> 
    <Grid> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="108*"/> 
      <ColumnDefinition Width="409*"/> 
     </Grid.ColumnDefinitions> 
     <TextBox x:Name="txtWindowTitle" HorizontalAlignment="Left" Height="23" Margin="176,10,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="233" Visibility="Hidden" Text="Value1" Grid.Column="1"/> 
     <TextBlock HorizontalAlignment="Left" Margin="33,130,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Grid.Column="1"/> 
     <TextBox x:Name="txtClassName" HorizontalAlignment="Left" Height="23" Margin="176,41,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="233" Visibility="Hidden" Text="Value2" Grid.Column="1"/> 
     <Label Content="Message 1:" HorizontalAlignment="Left" Margin="10,37,0,0" VerticalAlignment="Top"/> 
     <Label Content="Message 2:" HorizontalAlignment="Left" Margin="10,68,0,0" VerticalAlignment="Top"/> 
     <TextBox x:Name="txtMessage1" HorizontalAlignment="Left" Height="23" Margin="96,40,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="370" Grid.ColumnSpan="2"/> 
     <Label Content="Message 3:" HorizontalAlignment="Left" Margin="10,99,0,0" VerticalAlignment="Top"/> 
     <TextBox x:Name="txtMessage2" HorizontalAlignment="Left" Height="23" Margin="96,72,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="370" Grid.ColumnSpan="2"/> 
     <TextBox x:Name="txtMessage3" HorizontalAlignment="Left" Height="23" Margin="96,102,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="370" Grid.ColumnSpan="2"/> 
     <Button x:Name="btnActive" Content="Activate" HorizontalAlignment="Left" Margin="56,237,0,0" VerticalAlignment="Top" Width="75" Click="btnActive_Click" Grid.ColumnSpan="2"/> 
     <TextBox x:Name="txtMessage5" HorizontalAlignment="Left" Height="23" Margin="96,146,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="370" Grid.ColumnSpan="2"/> 


    </Grid> 
</Window> 

Answer 1

使用Key属性：

private void Window_KeyDown(object sender, System.Windows.Input.KeyEventArgs e) 
    { 
     switch (e.Key) 
     { 
      case Key.F1: 
       activeTracker= True; 
       break; 
      case Key.F2: 
       activeTracker= False; 
       break; 
      case Key.F3: 
       SendKeys.SendWait(txtMessage5.Text + "{ENTER}"); 
       break; 
    } 

我不知道你是如何管理的KeyCode属性用于字符串作为比较）这是WinForms和b）也无妨返回Keys值。

您的KeyDown处理程序无法编译，因为您的变量名称为activateTracker而不是activeTracker。

更改并确保您明确引用KeyEventArgs的System.Windows.Input版本，并且应该很好。