python pyqt5 QTextEdit 多行文本框

setPlainText() toPlainText() setHtml() toHtml() clear()

-- coding: utf-8 --

''' 【简介】 PyQt5中 QTextEdit例子

'''

from PyQt5.QtWidgets import QApplication, QWidget, QTextEdit, QVBoxLayout, QPushButton import sys

class TextEditDemo(QWidget): def init(self, parent=None): super(TextEditDemo, self).init(parent) self.setWindowTitle("QTextEdit 例子") self.resize(300, 270) self.textEdit = QTextEdit() self.btnPress1 = QPushButton("显示文本") self.btnPress2 = QPushButton("显示HTML") layout = QVBoxLayout() layout.addWidget(self.textEdit) layout.addWidget(self.btnPress1) layout.addWidget(self.btnPress2) self.setLayout(layout) self.btnPress1.clicked.connect(self.btnPress1_Clicked) self.btnPress2.clicked.connect(self.btnPress2_Clicked)

def btnPress1_Clicked(self):
    self.textEdit.setPlainText("Hello PyQt5!\n点击按钮")

def btnPress2_Clicked(self):
    self.textEdit.setHtml("<font color='red' size='6'><red>Hello PyQt5!\n点击按钮。</font>")

if name == "main": app = QApplication(sys.argv) win = TextEditDemo() win.show() sys.exit(app.exec_())