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在文本框中輸入回車(chē)時(shí)，可以將文本框中的文字設(shè)置到標(biāo)簽中去。

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from PyQt5.QtWidgets import *

from PyQt5.QtGui import QPalette,QFont

from PyQt5.QtCore import Qt

import sys

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class PyQt507(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(700, 300)?????????????????????????? # 設(shè)置窗口大小

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

??????? self.edit.setGeometry(10, 0,240, 40)??????????? # 設(shè)置位置和大小

??????? self.edit.setText('edit')

??????? self.edit.setFont(QFont('Arial',20))

??????? self.edit.returnPressed.connect(self.updateLabel)

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??????? self.tag = QLabel(self)???????????????????????? # 設(shè)置label信息

??????? self.tag.resize(120, 40)

??????? self.tag.move(290, 0)

??????? self.tag.setText('標(biāo)簽')

??????? self.tag.setFont(QFont('Arial',20))

??????? self.tag.setToolTip('標(biāo)簽提示')???????????????? # 設(shè)置標(biāo)簽提示

??????? pe = QPalette()???????????????????????????????? # 設(shè)置顏色

??????? pe.setColor(QPalette.WindowText,Qt.yellow)

??????? self.tag.setAutoFillBackground(True)

??????? pe.setColor(QPalette.Window,Qt.blue)

??????? self.tag.setPalette(pe)

??????? self.tag.setAlignment(Qt.AlignCenter)?????????? # 居中設(shè)置

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

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??? def updateLabel(self):

??????? edittext = self.edit.text()

??????? self.tag.setText(edittext)

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if __name__ == '__main__':

??? app = QApplication(sys.argv)

??? window = PyQt507()

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

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執(zhí)行結(jié)果