PyQt5 QLineEdit

• QLineEdit常用方法及属性
• QLineEdit 实例1
• QLineEdit 实例2
• QLineEdit 实例3
• QLineEdit 综合示例

QLineEdit常用方法及属性

QLineEdit 实例1

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLineEditWindow(QWidget):def __init__(self, parent=None):super(MyLineEditWindow, self).__init__(parent)self.setWindowTitle("LineEdit Demo1")self.initUI()def initUI(self):flayout = QFormLayout()pNormalLineEdit = QLineEdit()pNoEchoLineEdit = QLineEdit()pPasswordLineEdit = QLineEdit()pPasswordEchoOnLineEdit = QLineEdit()pNormalLineEdit.setPlaceholderText("Normal")pNoEchoLineEdit.setPlaceholderText("NoEcho")pPasswordLineEdit.setPlaceholderText("Password")pPasswordEchoOnLineEdit.setPlaceholderText("PasswordEchoOn")pNormalLineEdit.setEchoMode(QLineEdit.Normal)pNoEchoLineEdit.setEchoMode(QLineEdit.NoEcho)pPasswordLineEdit.setEchoMode(QLineEdit.Password)pPasswordEchoOnLineEdit.setEchoMode(QLineEdit.PasswordEchoOnEdit)flayout.addRow("Normal", pNormalLineEdit)flayout.addRow("NoEcho", pNoEchoLineEdit)flayout.addRow("Password", pPasswordLineEdit)flayout.addRow("PasswordEchoOn", pPasswordEchoOnLineEdit)self.setLayout(flayout)if __name__ == "__main__":app = QApplication(sys.argv)win = MyLineEditWindow()win.show()sys.exit(app.exec_())

QLineEdit 实例2

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLineEditWindow(QWidget):def __init__(self, parent=None):super(MyLineEditWindow, self).__init__(parent)self.setWindowTitle("QLineEdit Demo2")self.initUI()def initUI(self):fromLayout = QFormLayout()pIntLineEdit = QLineEdit()pDoubleLineEdit = QLineEdit()pValidatorLineEdit = QLineEdit()fromLayout.addRow("整型", pIntLineEdit)fromLayout.addRow("浮点型", pDoubleLineEdit)fromLayout.addRow("字母和数字", pValidatorLineEdit)pIntLineEdit.setPlaceholderText("整型")pDoubleLineEdit.setPlaceholderText("浮点型")pValidatorLineEdit.setPlaceholderText("字母和数字")pIntValidator = QIntValidator(self)pIntValidator.setRange(1, 99)pDoubleValidator = QDoubleValidator(self)pDoubleValidator.setRange(-360, 360)pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)pDoubleValidator.setDecimals(2)reg = QRegExp("[a-zA-Z0-9]+$")  # [a-zA-Z0-9]：只能输入一个字符，[a-zA-Z0-9]+$：可以输入字符串pValidator = QRegExpValidator(self)pValidator.setRegExp(reg)# 设置验证器pIntLineEdit.setValidator(pIntValidator)pDoubleLineEdit.setValidator(pDoubleValidator)pValidatorLineEdit.setValidator(pValidator)self.setLayout(fromLayout)if __name__ == "__main__":app = QApplication(sys.argv)win = MyLineEditWindow()win.show()sys.exit(app.exec_())

QLineEdit 实例3

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLineEditWindow(QWidget):def __init__(self, parent=None):super(MyLineEditWindow, self).__init__(parent)self.setWindowTitle("QLineEdit Demo3")self.initUI()def initUI(self):formLayout = QFormLayout()pIPLineEdit = QLineEdit()pMACLineEdit = QLineEdit()pDataLineEdit = QLineEdit()pLicenseLineEdit = QLineEdit()pIPLineEdit.setInputMask("000.000.000.000;_")pMACLineEdit.setInputMask("HH:HH:HH:HH:HH:HH;0")pDataLineEdit.setInputMask("0000-00-00")pLicenseLineEdit.setInputMask(">AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;#") formLayout.addRow("IP", pIPLineEdit)formLayout.addRow("MAC", pMACLineEdit)formLayout.addRow("Data", pDataLineEdit)formLayout.addRow("License", pLicenseLineEdit)self.setLayout(formLayout)if __name__ == "__main__":app = QApplication(sys.argv)win = MyLineEditWindow()win.show()sys.exit(app.exec_())

QLineEdit 综合示例

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLineEditWindow(QWidget):def __init__(self, parent=None):super(MyLineEditWindow, self).__init__(parent)e1 = QLineEdit()e1.setValidator(QIntValidator())e1.setMaxLength(4)e1.setAlignment(Qt.AlignRight)e1.setFont(QFont("Arial", 20))e2 = QLineEdit()e2.setValidator(QDoubleValidator(0.99, 99.99, 2))flo = QFormLayout()flo.addRow("integer validator", e1)flo.addRow("double validator", e2)e3 = QLineEdit()e3.setInputMask("+99_9999_99999")flo.addRow("input mask", e3)e4 = QLineEdit()e4.textChanged.connect(self.textchanged)# e4.textChanged.connect(self.textchanged(e4.text()))flo.addRow("text changed", e4)e5 = QLineEdit()e5.setEchoMode(QLineEdit.Password)e5.editingFinished.connect(self.enterPress)flo.addRow("password", e5) e6 = QLineEdit("Hello world")e6.setReadOnly(True)flo.addRow("read only", e6)self.setLayout(flo)self.setWindowTitle("QLineEdit 综合示例")def textchanged(self, text):print("输入的内容为：" + text)def enterPress(self):print("已输入值")if __name__ == "__main__":app = QApplication(sys.argv)win = MyLineEditWindow()win.show()sys.exit(app.exec_())