python - PyQt5点击button如何弹出新窗口？
怎么通过点击button，来打开一个新的窗口？
是写在同一个脚本里，还是把新窗口的代码放在另一个脚本里，然后通过点击按钮来运行？
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
class FirstWindow(QWidget):
def __init__(self):
super().__init__()
self.windowUI()
def windowUI(self):
self.setWindowTitle("Login")
self.textfield()
self.center()
def center(self):
qr = self.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
def textfield(self):
QToolTip.setFont(QFont('SansSerif', 12))
user = QLabel("User:")
userEdit = QLineEdit()
userEdit.setToolTip("请输入你的帐号")
passWord = QLabel("PassWord:")
passWordEdit = QLineEdit()
passWordEdit.setToolTip("请输入你的密码")
grid = QGridLayout()
grid.setSpacing(0)
grid.addWidget(user, 0, 0)
grid.addWidget(userEdit, 1, 0)
grid.addWidget(passWord, 2, 0)
grid.addWidget(passWordEdit, 3, 0)
empty = QLabel()
grid.addWidget(empty, 4, 0)
btn_logon = QPushButton("Log on")
btn_quit = QPushButton("Quit")
grid.addWidget(btn_logon, 5, 0, 1, 2)
grid.addWidget(btn_quit, 6, 0, 1, 2)
btn_logon.clicked.connect(self.onclick)
btn_quit.clicked.connect(quit)
self.setLayout(grid)
def onclick(self):
newWindow = SecondWindow()
newWindow.show()
newWindow.exec_()
class SecondWindow(QWidget):
def __init__(self):
super().__init__
self.newWindowUI
def newWindowUI(self):
self.resize(300,300)
self.move(200,200)
if __name__ == "__main__":
App = QApplication(sys.argv)
ex = FirstWindow()
ex.show()
sys.exit(App.exec_())
