PyQt5實(shí)現(xiàn)多線(xiàn)程防卡死和多窗口用法的方法

# -*- coding: UTF-8 -*-
""""=================================================
@Project -> File  ：Django 
@IDE  ：PyCharm
@Author ：愛(ài)跳水的溫文爾雅的laughing
@Date  ：2020/4/2 21:56
@Desc  ：
=================================================="""

from PyQt5.QtCore import pyqtSignal, QThread
from PyQt5.QtWidgets import QWidget, QMainWindow, QApplication
from untitled import Ui_MainWindow
import sys
import time

class Example(QThread):
  signal = pyqtSignal(str) # 括號(hào)里填寫(xiě)信號(hào)傳遞的參數(shù)

  def __init__(self):
    super(Example, self).__init__()

  def __del__(self):
    self.wait()

  def run(self):
    """
    進(jìn)行任務(wù)操作，主要的邏輯操作,返回結(jié)果
    """
    for i in range(10): 
      time.sleep(0.5)
      self.signal.emit(str("hello world"+str(i))) # 發(fā)射信號(hào)


class MyWindows(QMainWindow, Ui_MainWindow):
  def __init__(self):
    super(MyWindows, self).__init__()
    self.setupUi(self)
    self.pushButton.clicked.connect(self.buttonClick)

  # 點(diǎn)擊事件啟動(dòng)線(xiàn)程
  def buttonClick(self):
    self.thread = Example()
    self.thread.signal.connect(self.callback) #連接回調(diào)函數(shù)，接收結(jié)果
    self.thread.start() # 啟動(dòng)線(xiàn)程

  def callback(self, msg):
    self.lineEdit.setText(str(msg))


if __name__ == '__main__':
  app = QApplication(sys.argv)
  mywindow = MyWindows()
  mywindow.show()
  sys.exit(app.exec_())

class MyWindows(QMainWindow, Ui_MainWindow):
  sig = pyqtSignal() #實(shí)例化信號(hào)

  def __init__(self):
    super(MyWindows, self).__init__()
    self.setupUi(self)
    self.pushButton.clicked.connect(self.slot_btn_function) #設(shè)定點(diǎn)擊事件

  def slot_btn_function(self):
    # self.hide()
    self.f = Children() #第二個(gè)實(shí)例化UI
    self.f.show()

# -*- coding: UTF-8 -*-
""""=================================================
@Project -> File  ：Django -> 二叉樹(shù)之有序列表
@IDE  ：PyCharm
@Author ：愛(ài)跳水的溫文爾雅的laughing
@Date  ：2020/4/2 21:56
@Desc  ：
=================================================="""
from PyQt5.QtCore import pyqtSignal, QThread
from PyQt5.QtWidgets import QWidget, QMainWindow, QApplication
from untitled import Ui_MainWindow
from children import Ui_Dialog
import sys

#第二個(gè)子窗口,當(dāng)然子窗口也可以用多線(xiàn)程
class Children(QWidget, Ui_Dialog):
  def __init__(self):
    super(Children, self).__init__()
    self.setupUi(self)


#主窗口
class MyWindows(QMainWindow, Ui_MainWindow):
  sig = pyqtSignal() #實(shí)例化信號(hào)

  def __init__(self):
    super(MyWindows, self).__init__()
    self.setupUi(self)
    self.pushButton.clicked.connect(self.buttonClick) #設(shè)定點(diǎn)擊事件
    self.sig.connect(self.signal_slot) #連接信號(hào)

  def buttonClick(self):
    self.sig.emit()

  #實(shí)例化第二個(gè)窗口
  def signal_slot(self):
    self.s = Children()
    self.s.show()


if __name__ == '__main__':
  app = QApplication(sys.argv)
  mywindow = MyWindows()
  mywindow.show()
  sys.exit(app.exec_())

self.btn.setEnable(False)

self.btn.clicked.connect(self.test)

self.btn.trigged.connect(self.test)

label = QLabel(self)
label.setText("顯示內(nèi)容") # 寫(xiě)入
text = label.text() # 讀取

text_edit = QTextEdit(self)
text_edit.setText(a) # 設(shè)置文本
text_edit.append(a) # 追加文本
text = text_edit.toPlainText() # 獲取文本

button = QPushButton(self)
button .setChecked() # 設(shè)置為可選中
button.clicked.connect(clicked_function) # 按下觸發(fā)

def clicked_function():
	pass

radio_button1.setChecked(True) # 設(shè)置選中，同時(shí)只能有一個(gè)選中
check_box.setCheckable(True) # 設(shè)置為可被選中