Change the window's transparency
        :param alpha: From 0 to 1 with 0 being completely transparent
        :return:

def SetAlpha(self, alpha):
        '''
        Change the window's transparency
        :param alpha: From 0 to 1 with 0 being completely transparent
        :return:
        '''
        self._AlphaChannel = alpha
        self.TKroot.attributes('-alpha', alpha)