最近用pyqt5写了一个客户端工具，需要到下拉复选框的效果，但是自带的没有提供，经网上查到以下ComboCheckBox 类可以实现； 主要是下拉单选和复选框的结合，继承了 QComboBox 类，实例化 ComboCheckBox 即可实现下拉复选框。
代码如下：
from PyQt5.QtWidgets import QComboBox, QLineEdit, QListWidget, QCheckBox, QListWidgetItem
class ComboCheckBox(QComboBox):
def loadItems(self, items):
self.items = items
self.items.insert(0, '全部')
self.row_num = len(self.items)
self.Selectedrow_num = 0
self.qCheckBox = []
self.qLineEdit = QLineEdit()
self.qLineEdit.setReadOnly(True)
self.qListWidget = QListWidget()
self.addQCheckBox(0)
self.qCheckBox[0].stateChanged.connect(self.All)
for i in range(0, self.row_num):
self.addQCheckBox(i)
self.qCheckBox[i].stateChanged.connect(self.showMessage)
self.setModel(self.qListWidget.model())
self.setView(self.qListWidget)
self.setLineEdit(self.qLineEdit)
# self.qLineEdit.textChanged.connect(self.printResults)
def showPopup(self):
# 重写showPopup方法，避免下拉框数据多而导致显示不全的问题
select_list = self.Selectlist() # 当前选择数据
self.loadItems(items=self.items[1:]) # 重新添加组件
for select in select_list:
index = self.items[:].index(select)
self.qCheckBox[index].setChecked(True) # 选中组件
return QComboBox.showPopup(self)
def printResults(self):
list = self.Selectlist()
print(list)
def addQCheckBox(self, i):
self.qCheckBox.append(QCheckBox())
qItem = QListWidgetItem(self.qListWidget)
self.qCheckBox[i].setText(self.items[i])
self.qListWidget.setItemWidget(qItem, self.qCheckBox[i])
def Selectlist(self):
Outputlist = []
for i in range(1, self.row_num):
if self.qCheckBox[i].isChecked() == True:
Outputlist.append(self.qCheckBox[i].text())
self.Selectedrow_num = len(Outputlist)
return Outputlist
def showMessage(self):
Outputlist = self.Selectlist()
self.qLineEdit.setReadOnly(False)
self.qLineEdit.clear()
show = ';'.join(Outputlist)
if self.Selectedrow_num == 0:
self.qCheckBox[0].setCheckState(0)
elif self.Selectedrow_num == self.row_num - 1:
self.qCheckBox[0].setCheckState(2)
else:
self.qCheckBox[0].setCheckState(1)
self.qLineEdit.setText(show)
self.qLineEdit.setReadOnly(True)
def All(self, zhuangtai):
if zhuangtai == 2:
for i in range(1, self.row_num):
self.qCheckBox[i].setChecked(True)
elif zhuangtai == 1:
if self.Selectedrow_num == 0:
self.qCheckBox[0].setCheckState(2)
elif zhuangtai == 0:
self.clear()
def clear(self):
for i in range(self.row_num):
self.qCheckBox[i].setChecked(False)
def currentText(self):
text = QComboBox.currentText(self).split(';')
if text.__len__() == 1:
if not text[0]:
return []
else:
return "('{}')".format("','".join(text))
else:
return "('{}')".format("','".join(text))
if __name__ == '__main__':
from PyQt5 import QtWidgets,QtCore
import sys
items = ['Python', 'R', 'Java', 'C++', 'CSS']
app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
comboBox1 = ComboCheckBox(Form)
comboBox1.setGeometry(QtCore.QRect(10, 10, 100, 20))
comboBox1.setMinimumSize(QtCore.QSize(100, 20))
comboBox1.loadItems(items)
Form.show()
sys.exit(app.exec_())
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怎么获取数据？在mian里直接调用selectlist()获取不到数据是怎么回事？