Ps：水平有限，欢迎建议和挑错
PyQt5 文本编辑框 可以提供文字或者文字输入。

创建一个文本框

我们在第一节的mainwindows上创建一个lineedit。代码如下：

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon

class Ui_mainWindow(object):
    def setupUi(self, mainWindow):
        mainWindow.setObjectName("mainWindow")
        mainWindow.setWindowModality(QtCore.Qt.WindowModal)
        mainWindow.resize(624, 511)
        # mainWindow.setFixedSize(841,556)
        self.centralWidget = QtWidgets.QWidget(mainWindow)
        self.centralWidget.setObjectName("centralWidget")

        self.lineEdit = QtWidgets.QLineEdit(self.centralWidget)
        self.lineEdit.setGeometry(QtCore.QRect(210, 70, 181, 111))
        self.lineEdit.setObjectName("lineEdit")

        mainWindow.setCentralWidget(self.centralWidget)
        self.retranslateUi(mainWindow)
        QtCore.QMetaObject.connectSlotsByName(mainWindow)
    def retranslateUi(self, mainWindow):
        _translate = QtCore.QCoreApplication.translate
        mainWindow.setWindowTitle('您好')
        mainWindow.setWindowIcon(QIcon('logo.png'))
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = QtWidgets.QMainWindow()
    ui = Ui_mainWindow()
    ui.setupUi(mainWindow)
    mainWindow.show()
    sys.exit(app.exec_())

image.png

设置

边框

无边框

self.lineEdit.setFrame(False)

清除按键

self.lineEdit.setClearButtonEnabled(True)

5.gif

显示文本

self.lineEdit.setText("一个数据小白菜")

image.png

文本居中

self.lineEdit.setAlignment(QtCore.Qt.AlignCenter)

image.png

文本颜色大小字体

        self.lineEdit.setStyleSheet("color:red")
        font = QtGui.QFont()
        font.setFamily('微软雅黑')
        font.setBold(True)
        font.setPointSize(10)
        font.setWeight(75)
        self.lineEdit.setFont(font)

image.png

密码模式

self.lineEdit.setEchoMode(QtWidgets.QLineEdit.Password)

image.png

总结

最终代码如下：

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon

class Ui_mainWindow(object):
    def setupUi(self, mainWindow):
        mainWindow.setObjectName("mainWindow")
        mainWindow.setWindowModality(QtCore.Qt.WindowModal)
        mainWindow.resize(624, 511)
        # mainWindow.setFixedSize(841,556)
        self.centralWidget = QtWidgets.QWidget(mainWindow)
        self.centralWidget.setObjectName("centralWidget")

        self.centralWidget = QtWidgets.QWidget(mainWindow)
        self.centralWidget.setObjectName("centralWidget")
        self.lineEdit = QtWidgets.QLineEdit(self.centralWidget)
        self.lineEdit.setGeometry(QtCore.QRect(210, 70, 181, 111))
        self.lineEdit.setFrame(False)

        self.lineEdit.setClearButtonEnabled(True)
        self.lineEdit.setObjectName("lineEdit")
        self.lineEdit.setText("一个数据小白菜")
        self.lineEdit.setStyleSheet("color:red")
        font = QtGui.QFont()
        font.setFamily('微软雅黑')
        font.setBold(True)
        font.setPointSize(10)
        font.setWeight(75)
        self.lineEdit.setFont(font)
        self.lineEdit.setAlignment(QtCore.Qt.AlignCenter)
        self.lineEdit.setEchoMode(QtWidgets.QLineEdit.Password)
        mainWindow.setCentralWidget(self.centralWidget)

        mainWindow.setCentralWidget(self.centralWidget)
        self.retranslateUi(mainWindow)
        QtCore.QMetaObject.connectSlotsByName(mainWindow)
    def retranslateUi(self, mainWindow):
        _translate = QtCore.QCoreApplication.translate
        mainWindow.setWindowTitle('您好')
        mainWindow.setWindowIcon(QIcon('logo.png'))
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = QtWidgets.QMainWindow()
    ui = Ui_mainWindow()
    ui.setupUi(mainWindow)
    mainWindow.show()
    sys.exit(app.exec_())
···
![6.gif](https://img.haomeiwen.com/i9915084/a712f71bde871176.gif?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)