在WPF中处理MVVM中的多个鼠标事件

<Button Content="Click Me" Command="{Binding LeftButtonDownCommand}" />

public class RelayCommand : ICommand
{
    private Action<object> _execute;
    private Func<object, bool> _canExecute;

    public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
    {
        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
        _canExecute = canExecute;
    }

    public event EventHandler CanExecuteChanged;

    public bool CanExecute(object parameter)
    {
        return _canExecute == null || _canExecute(parameter);
    }

    public void Execute(object parameter)
    {
        _execute(parameter);
    }
}

public class MainViewModel : INotifyPropertyChanged
{
    public ICommand LeftButtonDownCommand { get; private set; }

    public MainViewModel()
    {
        LeftButtonDownCommand = new RelayCommand(OnLeftButtonDown);
    }

    private void OnLeftButtonDown(object parameter)
    {
        // 处理鼠标左键按下事件的逻辑
    }

    // 其他属性和方法省略...
}