refresh.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
renew = QPushButton("Renew Slice", self)
renew.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
refresh.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
renew = QPushButton("Renew Slice", self)
renew.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)