PyQt5

import sys
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QMainWindow
from test import Ui_MainWindow
from PyQt5.QtWidgets import QFileDialog
class MyPyQT_Form(QMainWindow, Ui_MainWindow):
  def __init__(self):
    super(MyPyQT_Form, self).__init__()
    self.setupUi(self)
  # 实现pushButton_click()函数，textEdit是我们放上去的文本框的id
  def pushButton_click(self):
    #self.showText.setText("你点击了按钮")
    dir_path = QFileDialog.getExistingDirectory(self, "choose directory", r"C:\Users\Administrator\Desktop")
    self.showText.setText(dir_path)
if __name__ == '__main__':
  app = QtWidgets.QApplication(sys.argv)
  my_pyqt_form = MyPyQT_Form()
  my_pyqt_form.show()
  sys.exit(app.exec_())

按钮响应事件详解1、使用QT Desinger设计程序主界面

2.1 设计界面

在PyCharm中创建一个项目，然后点击“Tools”--“s外部工具。” --“QTDesinger”打开QT Desinger

，然后下载“Push Button和

import sys
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QMainWindow
from test import Ui_MainWindow
from PyQt5.QtWidgets import QFileDialog
class MyPyQT_Form(QMainWindow, Ui_MainWindow):
  def __init__(self):
    super(MyPyQT_Form, self).__init__()
    self.setupUi(self)
  # 实现pushButton_click()函数，textEdit是我们放上去的文本框的id
  def pushButton_click(self):
    #self.showText.setText("你点击了按钮")
    dir_path = QFileDialog.getExistingDirectory(self, "choose directory", r"C:\Users\Administrator\Desktop")
    self.showText.setText(dir_path)
if __name__ == '__main__':
  app = QtWidgets.QApplication(sys.argv)
  my_pyqt_form = MyPyQT_Form()
  my_pyqt_form.show()
  sys.exit(app.exec_())

和” '形式”

2.2指定点击动作和响应函数

点击栏上有符号的改变位置按钮-----将光标移动到按钮“PushButton--”上​​单击鼠标左键“PushButton”不要松开——将光标​​拖动到Form中的任意位置，然后松开鼠标左键

将出现以下界面，“在侧面pushButton” ”，选择“click()”，然后在“表单”上，单击编辑