如何获取QComboBox Item数据

Question

而不是使用 .addItem("Item Name", "My Data") 来填充 QComboBox

我先创建它的项目：

item = QtGui.QStandardItem("Item Name")

然后我设置项目的数据：

item.setData("My data")

问题。如何从 currentIndexChanged() 方法中获取存储在 Combo 的 Item 中的数据，该方法获取被点击的 ComboBox 项目的索引作为参数：

import sys
import PySide.QtCore as QtCore
import PySide.QtGui as QtGui

class MyCombo(QtGui.QWidget):
    def __init__(self, *args):
        QtGui.QWidget.__init__(self, *args)
        vLayout=QtGui.QVBoxLayout(self)
        self.setLayout(vLayout)

        self.combo=QtGui.QComboBox(self)
        self.combo.currentIndexChanged.connect(self.currentIndexChanged)
        comboModel=self.combo.model()
        for i in range(3):
            item = QtGui.QStandardItem(str(i))
            item.setData('MY DATA' + str(i) )
            comboModel.appendRow(item)
        vLayout.addWidget(self.combo)

    def currentIndexChanged(self, index):
        print index        

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    w = MyCombo()
    w.show()
    sys.exit(app.exec_())

Answer 1

下面发布了工作解决方案。在使用 item.setData() 方法时，我们应该指定一个 Role 与我们关联的数据。

class MyCombo(QtGui.QWidget):
    def __init__(self, *args):
        QtGui.QWidget.__init__(self, *args)
        vLayout=QtGui.QVBoxLayout(self)
        self.setLayout(vLayout)

        self.combo=QtGui.QComboBox(self)
        self.combo.currentIndexChanged.connect(self.currentIndexChanged)
        comboModel=self.combo.model()
        for i in range(3):
            item = QtGui.QStandardItem(str(i))
            item.setData('MY DATA' + str(i), QtCore.Qt.UserRole )
            comboModel.appendRow(item)
        vLayout.addWidget(self.combo)

    def currentIndexChanged(self, index):     
        modelIndex=self.combo.model().index(index,0)
        print self.combo.model().data(modelIndex, QtCore.Qt.UserRole)

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    w = MyCombo()
    w.show()
    sys.exit(app.exec_())

Answer 2

import sys
from PySide import QtGui, QtCore

class MyCombo(QtGui.QWidget):
    def __init__(self, *args):
        QtGui.QWidget.__init__(self, *args)
        vLayout=QtGui.QVBoxLayout(self)
        self.setLayout(vLayout)

        self.combo=QtGui.QComboBox(self)
        self.combo.currentIndexChanged.connect(self.currentIndexChanged)
        comboModel=self.combo.model()
        for i in range(3):
            item = QtGui.QStandardItem(str(i))
            comboModel.appendRow(item)
            self.combo.setItemData(i,'MY DATA' + str(i))
        vLayout.addWidget(self.combo)

    def currentIndexChanged(self, index):
        print self.combo.itemData(index)    

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    w = MyCombo()
    w.show()
    sys.exit(app.exec_())

我认为这应该适合你

如何获取QComboBox Item数据

How to get QComboBox Item data

python

qt

pyqt

qcombobox