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在日歷控件選擇日期后，選擇的結(jié)果會顯示在LCD顯示器控件。

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from PyQt5.QtWidgets import *

from PyQt5.QtGui import QIcon, QPixmap

from PyQt5.QtCore import Qt, QDate, pyqtSignal

import sys

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class PyQt618(QWidget):

??? def __init__(self):

??????? super().__init__()

??????? self.initUI()

??? def initUI(self):

??????? self.setWindowTitle('氣輕PyQt6')??????????????? # 設(shè)置窗口標(biāo)題

??????? self.resize(290, 50)?????????????????????? ?????# 設(shè)置窗口大小

??????? self.setStyleSheet('background-color:#40E0D0')

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??????? dateData = QDate.currentDate()

??????? dateLabel = dateData.toString(Qt.DateFormat.ISODate)

??????? self.lcd = QLCDNumber(self)

??????? self.lcd.setGeometry(10, 0,230, 40)?????? ??????# 設(shè)置位置和大小

??????? self.lcd.setDigitCount(12)????????????????????? # 設(shè)置顯示位數(shù)

??????? self.lcd.display(dateLabel)

??????? self.lcd.setSegmentStyle(QLCDNumber.Outline)

??????? self.lcd.setStyleSheet('background-color:#7A67EE;color : #32CD32; \

????????? ??????????font: bold large /"Times New Roman/";font-size:25px')

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??????? self.btn = QPushButton('', self)

??????? self.btn.setGeometry(240,0,40,40)?????????????? # 設(shè)置位置和大小

??????? self.btn.setIcon(QIcon(QPixmap('Date.png')))

??????? self.btn.clicked.connect(self.calendarOn)

??????? self.btn.setStyleSheet('background-color:#DAA520')

??????? self.btn.setToolTip('選擇日期')???????????????? # 設(shè)置label提示

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??????? self.show()

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??? def calendarOn( self ):

??????? self.calWin = CalendarWin()

??????? self.calWin.show()

??????? self.calWin.signal.connect(self.lcd.display)???? # 連接信號與槽

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class CalendarWin(QWidget):

??? signal = pyqtSignal( str )????????????????????????? #定義一個信號

??? def __init__(self):

??????? super().__init__()

??????? self.setWindowTitle('日期')

??????? cal = QCalendarWidget(self)

??????? cal.setGridVisible(True)

??????? self.setGeometry(800,600,280, 220)????????????? # 設(shè)置位置和大小

??????? cal.clicked[QDate].connect(self.emitDate)????? ?# 按下按鈕時發(fā)送信號

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??? def emitDate(self,date):

??????? self.signal.emit(date.toString("yyyy-MM-dd"))

??????? self.close()

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if __name__ == '__main__':

??? app = QApplication(sys.argv)

??? window = PyQt618()

??? sys.exit(app.exec())

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執(zhí)行結(jié)果