PyQt5下拉式复选框QComboCheckBox的实例

from PyQt5.QtWidgets import QComboBox,QLineEdit,QListWidget,QCheckBox,QListWidgetItem
 
class ComboCheckBox(QComboBox):
  def __init__(self,items):#items==[str,str...]
    super(ComboCheckBox,self).__init__()
    self.items=items
    self.qCheckBox=[]
    self.qLineEdit=QLineEdit()
    self.qLineEdit.setReadOnly(True)
    qListWidget=QListWidget()
 
    self.row_num=len(self.items)
    for i in range(self.row_num):
      self.qCheckBox.append(QCheckBox())
      qItem=QListWidgetItem(qListWidget)
      self.qCheckBox[i].setText(self.items[i])
      qListWidget.setItemWidget(qItem,self.qCheckBox[i])
      self.qCheckBox[i].stateChanged.connect(self.show)
    
    self.setLineEdit(self.qLineEdit)     
    self.setModel(qListWidget.model())
    self.setView(qListWidget)
 
  def Selectlist(self):
    Outputlist=[]
    for i in range(self.row_num):
      if self.qCheckBox[i].isChecked()==True:
        Outputlist.append(self.qCheckBox[i].text())
    return Outputlist
 
  def show(self):
    show=''
    self.qLineEdit.setReadOnly(False)
    self.qLineEdit.clear()
    for i in self.Selectlist():
      show+=i+';'
    self.qLineEdit.setText(show)
    self.qLineEdit.setReadOnly(True)
from PyQt5.QtWidgets import QComboBox,QLineEdit,QListWidget,QCheckBox,QListWidgetItem
 
class ComboCheckBox(QComboBox):
  def __init__(self,items):#items==[str,str...]
    super(ComboCheckBox,self).__init__()
    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(1,self.row_num):
      self.addQCheckBox(i)
      self.qCheckBox[i].stateChanged.connect(self.show)
    self.setModel(self.qListWidget.model())
    self.setView(self.qListWidget)
    self.setLineEdit(self.qLineEdit)     
 
  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 show(self):
    show=''
    Outputlist=self.Selectlist()
    self.qLineEdit.setReadOnly(False)
    self.qLineEdit.clear()
    for i in Outputlist:
      show+=i+';'
    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)