我想将Qt QML Combobox设置为PyQt5对象属性

Question

我正在编写一个小程序,它使用Qt5 QML作为GUI层,使用Python3-PyQt5来实现数据模型.

我现在想要ComboBox在QML中显示并将其模型设置为枚举列表.我如何将枚举作为python类的属性导出,以便我可以在QML中引用它？

我最好用QML写这个:

ComboBox {
  model: mymodel.car_manufacturers
  onCurrentIndexChanged: mymodel.selected_manufacturer = currentIndex
}

Answer 1

这是我的解决方案，对我来说足够好。在 python 代码中我有以下内容：

class CarManufacturers(enum.Enum):
    BMW, Mercedes = range(2)

mfcChanged = pyqtSignal()

@pyqtProperty('QStringList', constant=True)
def carmanufacturers(self):
    return [mfc.name for mfc in CarManufacturers]

@pyqtProperty('QString', notify=mfcChanged)
def mfc(self):
    return str(CarManufacturers[self._mfc].value)

@modus.setter
def mfc(self, mfc):
    print('mfc changed to %s' % mfc)
    if self._mfc != CarManufacturers(int(mfc)).name:
        self._mfc = CarManufacturers(int(mfc)).name
        self.mfcChanged.emit()

在 QML 中我有：

ComboBox {
    model: myModel.carmanufacturers
    currentIndex: myModel.mfc
    onCurrentIndexChanged: myModel.mfc = currentIndex
}