Check button state for all mouse buttons

Question

Is there a better way to check the button state for all mouse buttons than to check any additional button?

var mouseEventArgs = (System.Windows.Input.MouseEventArgs)e.StagingItem.Input;

if (mouseEventArgs.LeftButton == MouseButtonState.Released &&
    mouseEventArgs.MiddleButton == MouseButtonState.Released &&
    mouseEventArgs.RightButton == MouseButtonState.Released &&
    mouseEventArgs.XButton1 == MouseButtonState.Released &&
    mouseEventArgs.XButton2 == MouseButtonState.Released)
{
    return;
}

If not, how can I do it more elegantly without repeating so much?

Thanks in advance!

Answer 1

I don’t think that you can do much other than refactoring this method, since there is no predefined collection for all buttons. If you want it to be completely out of sight, you can use the extension method as follows:

public static class Extensions
{
    public static bool CheckUniformButtonState(this MouseButtonEventArgs e, MouseButtonState state)
    {
        switch (state)
        {
            case MouseButtonState.Pressed:
                return (e.LeftButton == MouseButtonState.Pressed &&
                    e.RightButton == MouseButtonState.Pressed &&
                    e.MiddleButton == MouseButtonState.Pressed &&
                    e.XButton1 == MouseButtonState.Pressed &&
                    e.XButton2 == MouseButtonState.Pressed);
            case MouseButtonState.Released:
                return (e.LeftButton == MouseButtonState.Released &&
                    e.RightButton == MouseButtonState.Released &&
                    e.MiddleButton == MouseButtonState.Released &&
                    e.XButton1 == MouseButtonState.Released &&
                    e.XButton2 == MouseButtonState.Released);
            default:
                return false;
        }
    }
}

(Not that anyone could check if all 5 buttons were pressed.)

Then you can check the following:

if (mouseEventArgs.CheckUniformButtonState(MouseButtonState.Released))
{
    return;
}

Answer 2

var buttonStates = new [] {
     mouseEventArgs.LeftButton, 
     mouseEventArgs.MiddleButton,
     mouseEventArgs.RightButton,
     mouseEventArgs.XButton1,
     mouseEventArgs.XButton2};

if (buttonStates.All(s => s == MouseButtonState.Released))
{
     return;
}