import sys
from PyQt5.QtWidgets import QApplication, QWidget,QToolTip,QPushButton
from PyQt5.QtGui import QIcon,QFont
from PyQt5.QtCore import QCoreApplication
#demo_4:通過一個按鈕關閉窗體
class Exception(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle('添加關閉按鈕')
self.setFont(QFont('微軟雅黑',20))
self.resize(400,300)
self.setWindowIcon(QIcon('1.png'))
btn=QPushButton('關閉',self)
#關閉應用
btn.clicked.connect(QCoreApplication.instance().quit)
self.show()
if __name__=='__main__':
pp=QApplication(sys.argv)
example=Exception()
#example.show()
sys.exit(pp.exec())
轉自:PyQt5-按鈕關閉窗體-4