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也有把QDoubleSpinBox控件稱為數(shù)字調(diào)節(jié)框或計(jì)數(shù)器的。本程序制作了一個(gè)QDoubleSpinBox控件，當(dāng)數(shù)據(jù)發(fā)生變化時(shí)，結(jié)果會(huì)顯示在LCD顯示器中。之前的程序中在LCD顯示器中直接顯示的文字，也可以直接顯示數(shù)字。

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from PyQt5.QtWidgets import *

import sys

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class PyQt519(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(290, 50)??????????????????????????? # 設(shè)置窗口大小

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

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

??????? self.lcd.setGeometry(10, 0,180, 40)???????????? # 設(shè)置位置和大小

??????? self.lcd.setDigitCount(10)????????????????????? # 設(shè)置顯示位數(shù)

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

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

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??????? self.spin = QDoubleSpinBox(self)

??????? self.spin.setGeometry(190,0,90,40)?????????????? # 設(shè)置位置和大小

???? ???self.spin.setRange(35,40)

??????? self.spin.setSingleStep(0.1)

??????? self.spin.setDecimals(1)

??????? self.spin.setValue(36.6)

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

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

??????? self.lcd.display(self.spin.value())

??????? self.spin.valueChanged.connect(lambda :self.lcd.display(self.spin.value()))

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

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if __name__ == '__main__':

??? app = QApplication(sys.argv)

??? window = PyQt519()

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

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執(zhí)行結(jié)果