PyQt5（12）QLineEdit的总结

'''

QLineEdit综合案例

'''

from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import Qt
import sys

class QLineEditDemo(QWidget):
    def __init__(self):
        super(QLineEditDemo,self).__init__()
        self.initUI()

    def initUI(self):
        edit1 = QLineEdit()
        # 使用int校验器
        edit1.setValidator(QIntValidator())#设置整形校验
        edit1.setMaxLength(4)  # 不超过9999
        edit1.setAlignment(Qt.AlignRight)#设置右对齐此处指的是文本框内输入的右对齐
        edit1.setFont(QFont('Arial',20))#设置字体

        edit2 = QLineEdit()
        edit2.setValidator(QDoubleValidator(0.99,99.99,2))#0.99到99.99，，精度是2

        edit3 = QLineEdit()
        edit3.setInputMask('99_9999_999999;#')#设置输入掩码


        edit4 = QLineEdit()
        edit4.textChanged.connect(self.textChanged)

        edit5 = QLineEdit()
        edit5.setEchoMode(QLineEdit.Password)
        edit5.editingFinished.connect(self.enterPress)

        edit6 = QLineEdit('Hello PyQt5')
        edit6.setReadOnly(True)


        formLayout = QFormLayout()
        formLayout.addRow('整数校验',edit1)
        formLayout.addRow('浮点数校验',edit2)
        formLayout.addRow('Input Mask',edit3)
        formLayout.addRow('文本变化', edit4)
        formLayout.addRow('密码',edit5)
        formLayout.addRow('只读',edit6)
        self.setLayout(formLayout)
        self.setWindowTitle('QLineEdit综合案例')
    def textChanged(self,text):
        print('输入的内容：' + text)#谁调用此函数，此函数的输入内容就是什么

    def enterPress(self):
        print('已输入值')
if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = QLineEditDemo()
    main.show()
    sys.exit(app.exec_())