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點(diǎn)擊按鈕后在新窗口中顯示日歷控件，在日歷控件中選擇日期后，新窗口關(guān)閉。通過(guò)槽機(jī)制將選擇的日期顯示在主窗口中的文本框里。

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from PyQt5.QtWidgets import *

from PyQt5.QtGui import QFont, QIcon, QPixmap

from PyQt5.QtCore import Qt, QDate, pyqtSignal

import sys

import datetime

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class PyQt513(QWidget):

??? def __init__(self):

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

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

??? def initUI(self):

??????? self.setWindowTitle('氣輕PyQt5')??????????????? # 設(shè)置窗口標(biāo)題

??????? self.resize(300, 60)??????????????????????????? # 設(shè)置窗口大小

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??????? dateData = datetime.datetime.now().date()

??????? dateLabel = dateData.strftime('%Y-%m-%d')

??????? self.edit = QLineEdit(self)???????????????????? # 輸入框

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

??????? self.edit.setReadOnly(True)???????????????????? # 只讀

??????? self.edit.setText(dateLabel)

??????? self.edit.setAlignment(Qt.AlignmentFlag.AlignHCenter)# 居中設(shè)置

??????? self.edit.setStyleSheet('background-color:#FFE4B5;color : #32CD32; \

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

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

??????? self.btn.setGeometry(250, 0, 40, 40)

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

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

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

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??? def updateEdit(self,t):

??????? self.edit.setText(t)

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??? def calendarOn( self ):

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

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

??????? self.calWin.move(900,700)

??????? self.calWin.signal.connect(self.updateEdit)??? # 連接信號(hào)與槽

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class CalendarWin(QWidget):

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

??? def __init__(self,t):

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

??????? self.t = t

??????? self.setWindowTitle('日期')

??????? self.resize(440, 220)

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

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

??????? cal.resize(400,180)

??????? cal.move(10,10)

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

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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 = PyQt513()

??? sys.exit(app.exec_())

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執(zhí)行結(jié)果

?參照【氣輕PyQt6 13】