Process completed with exit code 1.

'MainWindow' does not contain a definition for 'CloseButton_Click' and no accessible extension method 'CloseButton_Click' accepting a first argument of type 'MainWindow' could be found (are you missing a using directive or an assembly reference?)

'MainWindow' does not contain a definition for 'MaximizeButton_Click' and no accessible extension method 'MaximizeButton_Click' accepting a first argument of type 'MainWindow' could be found (are you missing a using directive or an assembly reference?)

'MainWindow' does not contain a definition for 'MinimizeButton_Click' and no accessible extension method 'MinimizeButton_Click' accepting a first argument of type 'MainWindow' could be found (are you missing a using directive or an assembly reference?)

'MainWindow' does not contain a definition for 'ColorZone_MouseLeftButtonDown' and no accessible extension method 'ColorZone_MouseLeftButtonDown' accepting a first argument of type 'MainWindow' could be found (are you missing a using directive or an assembly reference?)