Python PySide自定义小部件不'；t在QTableWidget中自动调整

我正在尝试创建一个自定义小部件

RangeSpinBox

。该小部件不能自动装入

QTableWidget

，如下图所示

---

您需要删除布局上的默认页边距，还需要更改旋转框上的大小策略以在两个方向上展开：

        main_layout = QtGui.QHBoxLayout()
        main_layout.setContentsMargins(0, 0, 0, 0)

        size_policy = QtGui.QSizePolicy(
            QtGui.QSizePolicy.MinimumExpanding,
            QtGui.QSizePolicy.MinimumExpanding)

        self.__minimum_spin_box = QtGui.QSpinBox()
        self.__minimum_spin_box.setSizePolicy(size_policy)
        self.__range_label = QtGui.QLabel('-')
        self.__maximum_spin_box = QtGui.QSpinBox()
        self.__maximum_spin_box.setSizePolicy(size_policy)

        main_layout = QtGui.QHBoxLayout()
        main_layout.setContentsMargins(0, 0, 0, 0)

        size_policy = QtGui.QSizePolicy(
            QtGui.QSizePolicy.MinimumExpanding,
            QtGui.QSizePolicy.MinimumExpanding)

        self.__minimum_spin_box = QtGui.QSpinBox()
        self.__minimum_spin_box.setSizePolicy(size_policy)
        self.__range_label = QtGui.QLabel('-')
        self.__maximum_spin_box = QtGui.QSpinBox()
        self.__maximum_spin_box.setSizePolicy(size_policy)