from PyQt5.QtWidgets import (QApplication,QWidget,QPushButton,QLCDNumber,QFormLayout,QLineEdit,QLabel,QGridLayout)
from PyQt5.QtGui import QFont
from PyQt5.QtCore import Qt,QTimer,QDateTime,QDate,QTime,QSize
import sys
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.setGeometry(300,300,330,310)
self.setWindowTitle("数字键盘输入")
gridLayout = QGridLayout()
self.display = QLineEdit("0")
self.display.setFixedSize(QSize(287,40))
self.display.setReadOnly(True)
self.display.setAlignment(Qt.AlignRight)
self.display.setFont(QFont("微软雅黑",14,QFont.Bold))
gridLayout.addWidget(self.display,0,0,1,4)
self.showNum = ""
keys = ['Clear', '/', '*', '-',
'7', '8', '9', '+',
'4', '5', '6', '',
'1', '2', '3', 'Enter',
'0', '', '.', '']
position = [(0, 0), (0, 1), (0, 2), (0, 3),
(1, 0), (1, 1), (1, 2), (1, 3),
(2, 0), (2, 1), (2, 2), (2, 2),
(3, 0), (3, 1), (3, 2), (3, 3),
(4, 0), (4, 1), (4, 2), (4, 3), ]
for item in range(len(keys)):
btn = QPushButton(keys[item])
btn.setFixedSize(QSize(60, 40))
btn.setFont(QFont("微软雅黑",12,QFont.Bold))
btn.clicked.connect(self.btnClicked)
if keys[item] == "+":
gridLayout.addWidget(btn, 2, 3, 2, 1)
btn.setFixedSize(QSize(60, 90))
elif keys[item] == "Enter":
gridLayout.addWidget(btn, 4, 3, 2, 1)
btn.setFixedSize(QSize(60, 90))
elif keys[item] == "0":
gridLayout.addWidget(btn, 5, 0, 1, 2)
btn.setFixedSize(QSize(142, 40))
elif keys[item] == "":
continue
else:
gridLayout.addWidget(btn, position[item][0]+1, position[item][1], 1, 1)
self.setLayout(gridLayout)
def btnClicked(self):
sender = self.sender()
symbols = ["Clear","/","*","-","+","Enter"]
if sender.text() not in symbols:
self.showNum += sender.text()
self.display.setText(self.showNum)
elif sender.text() == "Clear":
self.display.setText("0")
self.showNum = ""
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = Example()
ex.show()
sys.exit(app.exec_())