Shows a balloon above icon in system tray
        :param title:  Title shown in balloon
        :param message: Message to be displayed
        :param filename: Optional icon filename
        :param data: Optional in-ram icon
        :param data_base64: Optional base64 icon
        :param time: How long to display message in milliseconds
        :return:

def ShowMessage(self, title, message, filename=None, data=None, data_base64=None, messageicon=None, time=10000):
        '''
        Shows a balloon above icon in system tray
        :param title:  Title shown in balloon
        :param message: Message to be displayed
        :param filename: Optional icon filename
        :param data: Optional in-ram icon
        :param data_base64: Optional base64 icon
        :param time: How long to display message in milliseconds
        :return:
        '''
        qicon = None
        if filename is not None:
            qicon = QIcon(filename)
        elif data is not None:
            ba = QtCore.QByteArray.fromRawData(data)
            pixmap = QtGui.QPixmap()
            pixmap.loadFromData(ba)
            qicon = QIcon(pixmap)
        elif data_base64 is not None:
            ba = QtCore.QByteArray.fromBase64(data_base64)
            pixmap = QtGui.QPixmap()
            pixmap.loadFromData(ba)
            qicon = QIcon(pixmap)

        if qicon is not None:
            self.TrayIcon.showMessage(title, message, qicon, time)
        elif messageicon is not None:
            self.TrayIcon.showMessage(title, message, messageicon, time)
        else:
            self.TrayIcon.showMessage(title, message, QIcon(), time)

        self.LastMessage = message
        self.LastTitle = title
        return self