Question

我正在尝试在用户使用KeyDown事件按 ctrl - x 时触发事件。这适用于 ctrl - D ，但是当按下 ctrl - x 时，事件不会触发。我猜这是因为 ctrl - x 是“cut”命令。当按下 ctrl - X 时有没有办法触发事件？

private void textBox_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyboardDevice.IsKeyDown(Key.LeftCtrl) || e.KeyboardDevice.IsKeyDown(Key.RightCtrl))
    {
        switch (e.Key)
        {
            case Key.D:
                //handle D key
                break;
            case Key.X:
                //handle X key
                break;
        }
    }
}

Answer 1

要在wpf中这样做，我试试这个：

private void HandleKeyDownEvent(object sender, KeyEventArgs e)
{
    if (e.Key == Key.X && (Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
    {
        MessageBox.Show("You press Ctrl+X :)");
    }
}

Answer 2

您可以覆盖现有剪切命令：

<TextBox>
    <TextBox.InputBindings>
        <KeyBinding Key="X" Modifiers="Control" Command="{Binding TestCommand}" />
    </TextBox.InputBindings>
</TextBox>

您需要创建command。

Answer 3

我正在使用这种方法：

private void SomeWindow_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Key == Key.X && (e.KeyboardDevice.Modifiers & ModifierKeys.Control) != 0)
    {
        //Ctrl + X is pressed
    }
}

Answer 4

大多数答案都可以完成工作，但是调试却很麻烦。由于先按CTRL键，因此应将其分开，以便可以跳过它，并且只能由单个if进行检查。以下内容应该高效且易于调试。

public MyApp() {
    // other constructor code
    KeyDown += MyApp_KeyDown;    
}

private void MyApp_KeyDown(object sender, KeyEventArgs e) {
    // hold that CTRL key down all day... you'll never get in unless there's another key too. 
    if (Keyboard.Modifiers == ModifierKeys.Control && e.Key!=Key.LeftCtrl && e.Key != Key.RightCtrl) 
    {
        switch (e.Key) // <--- Put the BREAK here.  Stops iff there's another key too.
        {
            case Key.C: UndoRedoStack.InsertInUnDoRedoForCopy(CopyArgs); break;
            case Key.X: UndoRedoStack.InsertInUnDoRedoForCut(CutArgs); break;
            case Key.V: UndoRedoStack.InsertInUnDoRedoForPaste(PasteArgs); break;
            case Key.Y: UndoRedoStack.Redo(1); break;
            case Key.Z: UndoRedoStack.Undo(1); break;
            default: break;
        }
    }
}

Answer 5

在keydown事件中尝试以下

       if (e.Control == true && e.KeyCode==keys.x)
       {
            e.Handled = true;
            textBox1.SelectionLength = 0;
            //Call your method
       }

使用WPF中文本框的KeyDown事件捕获Ctrl-X

5 个答案: