將ListBox中的多個項目複製到ClipBoard

Question

我有一個TextBlock的列表框，我希望最終用戶能夠從顯示中複製文本，然後將其粘貼到他們喜歡的位置。我可以通過右鍵單擊 - >複製，並用用戶的ctrl + c鍵按下來獲得單行副本。我也可以通過用戶的ctrl + c鍵按下多行復制。我希望能夠通過右鍵單擊 - >複製功能以及從菜單下拉菜單中進行多行復制。

我的列表框：

<!--Progress Window--> 
    <ListBox x:Name="Progress_Window" ItemsSource="{Binding _displayString}" ScrollViewer.ScrollChanged="Progress_Window_ScrollChanged" KeyDown="Progress_Window_KeyDown" SelectionMode="Extended"> 
     <ListBox.ItemTemplate> 
      <DataTemplate> 
       <TextBlock Text="{Binding _string}" Foreground="{Binding _color}" FontSize="{Binding _fontSize}"> 

        <TextBlock.ContextMenu> 
         <ContextMenu> 
          <MenuItem Command="Copy"> 
           <MenuItem.CommandBindings> 
            <CommandBinding Command="ApplicationCommands.Copy" CanExecute="RightClickCopyCmdCanExecute" Executed="RightClickCopyCmdExecuted" /> 
           </MenuItem.CommandBindings> 
          </MenuItem> 
         </ContextMenu> 
        </TextBlock.ContextMenu> 

       </TextBlock> 
      </DataTemplate> 
     </ListBox.ItemTemplate> 
    </ListBox> 

的背後代碼：

[DllImport("user32.dll", SetLastError = true)] 
    static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo); 


    [DllImport("kernel32.dll")] 
    static extern bool GenerateConsoleCtrlEvent(uint dwCtrlEvent, uint dwProcessGroupId); 


    public const int KEYEVENTF_EXTENDEDKEY = 0x0001; //Key down flag 
    public const int KEYEVENTF_KEYUP = 0x0002; //Key up flag 
    public const int VK_LCONTROL = 0xA3; //0xA2; //Left Control key code 
    public const int C = 0x43; //A Control key code 


    private void Progress_Window_KeyDown(object sender, KeyEventArgs e) 
    { 
     if (e.Key == Key.C && (Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control) 
     { 
      try 
      { 
       ListBox lb = (ListBox)(sender); 

       string collectedText = ""; 

       foreach (DisplayData dd in lb.SelectedItems) 
       { 
        collectedText += dd._string + "\r\n"; 
       } 

       if (lb.SelectedItems != null) 
       { 
        Clipboard.SetText(collectedText); 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 
      } 
     } 
    } 


    private void RightClickCopyCmdExecuted(object sender, ExecutedRoutedEventArgs e) 
    { 
     MenuItem mi = (MenuItem)sender; 
     DisplayData selected = (DisplayData)mi.DataContext; 

     if (selected != null) 
     { 
      Clipboard.SetText(selected._string); 
     } 
    } 


    private void RightClickCopyCmdCanExecute(object sender, CanExecuteRoutedEventArgs e) 
    { 
     e.CanExecute = true; 
    } 


    public void CallKeyDown() 
    { 
     //Progress_Window.Focus(); 

     //// Hold Control down and press C 
     //keybd_event(VK_LCONTROL, 0, 0, 0); 
     //keybd_event(C, 0, 0, 0); 
     //keybd_event(C, 0, KEYEVENTF_KEYUP, 0); 
     //keybd_event(VK_LCONTROL, 0, KEYEVENTF_KEYUP, 0); 

     System.Windows.Forms.SendKeys.SendWait("^{c}"); 

     var key = Key.C;    // Key to send    
     var target = Progress_Window;    // Target element 
     var routedEvent = Keyboard.KeyDownEvent; // Event to send 

     target.RaiseEvent(new KeyEventArgs(Keyboard.PrimaryDevice, PresentationSource.FromVisual(target), 0, key) { RoutedEvent = routedEvent }); 
    } 
} 

從菜單下拉：

<Grid> 
    <Menu> 
     <!--File--> 
     <MenuItem Header="_File"> 
      <MenuItem Header="_Close" Command="{Binding Close}" /> 
     </MenuItem> 

     <!--Edit--> 
     <MenuItem Header="_Edit"> 
      <MenuItem Header="_Copy  Ctrl+C" Command="{Binding CtrlC}" /> 
     </MenuItem> 

CTRLC命令調用觸發CallKeyDown一個Action（）。

我試圖將我的ContextMenu從TextBlock移動到ListBox，但是這給了我ViewModel的DataContext，而不是給我_displayString數據。你可以在CallKeyDown（）中看到我試圖模擬一個ctrl + c鍵從代碼後面按下沒有成功。我不知道這是否是解決此問題的最佳方法。我也嘗試使用SendKeys.Send（「^ {c}」），但只適用於窗體窗體。

Answer 1

我只需要將我的代碼RightClickCopyCmdExecuted複製到CallKeyDown()，一切都很好。然後我會致電CallKeyDown從RightClickCopyCmdExecuted。

我得到了多行右鍵單擊 - >在列表框中複製。 所以我的列表框變爲：

<!--Progress Window--> 
    <ListBox x:Name="Progress_Window" ItemsSource="{Binding _displayString}" ScrollViewer.ScrollChanged="Progress_Window_ScrollChanged" KeyDown="Progress_Window_KeyDown" SelectionMode="Extended"> 
     <ListBox.ItemTemplate> 
      <DataTemplate> 
       <TextBlock Text="{Binding _string}" Foreground="{Binding _color}" FontSize="{Binding _fontSize}" /> 
      </DataTemplate> 
     </ListBox.ItemTemplate> 

     <ListBox.ContextMenu> 
      <ContextMenu> 
       <MenuItem Command="Copy"> 
        <MenuItem.CommandBindings> 
         <CommandBinding Command="ApplicationCommands.Copy" CanExecute="RightClickCopyCmdCanExecute" Executed="RightClickCopyCmdExecuted" /> 
        </MenuItem.CommandBindings> 
       </MenuItem> 
      </ContextMenu> 
     </ListBox.ContextMenu> 
    </ListBox> 

和後面的代碼就變成了：

private void RightClickCopyCmdExecuted(object sender, ExecutedRoutedEventArgs e) 
    { 
     string collectedText = ""; 

     foreach (DisplayData dd in Progress_Window.SelectedItems) 
     { 
      collectedText += dd._string + "\r\n"; 
     } 

     if (Progress_Window.SelectedItems != null) 
     { 
      Clipboard.SetText(collectedText); 
     } 
    }