Question

I made a custom text editor control, which processes the arrow key. The problem is when there is more than one control in a form, the arrow key processing is queued: at the first time the event is processed with focused control, next time with another custom control, then again focused control and so on. So what should I do to process the arrow key with just the custom text editor control, not with all controls on a form?

Answer 1

A problem actually was because of WinForm navigation with arrows keys. So i disable the navigation for my text editor. For that OnPreviewKeyDown event was overrided like in the example:

    protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
    {
        base.OnPreviewKeyDown(e);

        switch (e.KeyCode)
        {
            case Keys.Up:
            case Keys.Down:
            case Keys.Left:
            case Keys.Right:
                e.IsInputKey = true;
                break;
            default:
                break;
        }
    }