using System.Windows;
using System.Windows.Input;
using System.Windows.Media;

namespace Klassenarbeit_19_06_2018
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            window.Background = Brushes.Yellow;
        }

        private void Rect_MouseEnter(object sender, MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                rect.Fill = Brushes.IndianRed;
            }
        }

        private void Rect_MouseLeave(object sender, MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                rect.Fill = Brushes.ForestGreen;
            }
        }

        private void Rect_MouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (rect.IsMouseOver)
            {
                // falls das rechteck zu klein wird
                if (rect.Width + e.Delta < 100 && rect.Height + e.Delta < 100)
                    return;

                rect.Width += e.Delta;
                rect.Height += e.Delta;
            }
        }
    }
}