python弹出窗口的代码 python中弹出窗口

方法一：

from PyQt5.QtWidgets import *
import sys
 
class Main(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("主窗口")
button = QPushButton("弹出子窗", self)
button.clicked.connect(self.show_child)
 
def show_child(self):
self.child_window = Child()
self.child_window.show()
 
class Child(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("我是子窗口啊")
# 运行主窗口
if __name__ == "__main__":
app = QApplication(sys.argv)
 
window = Main()
window.show()
 
sys.exit(app.exec_())

 

方法二：

from PyQt5.QtWidgets import *
import sys
 
class Main(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("主窗口")
button = QPushButton("弹出子窗", self)
button.clicked.connect(self.show_child)
self.child_window = Child()
 
def show_child(self):
self.child_window.show()
 
class Child(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("我是子窗口啊")
 
# 运行主窗口
if __name__ == "__main__":
app = QApplication(sys.argv)
 
window = Main()
window.show()
 
sys.exit(app.exec_())

 

方法三：

from PyQt5.QtWidgets import *
import sys
 
class Main(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("主窗口")
button = QPushButton("弹出子窗", self)
button.clicked.connect(self.show_child)
self.child_window = Child()
 
def show_child(self):
self.child_window.show()
 
class Child(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("我是子窗口啊")
 
# 运行主窗口
if __name__ == "__main__":
app = QApplication(sys.argv)
 
window = Main()
window.show()
 
sys.exit(app.exec_())