1.QTextEdit简介

PyQt5中QTextEdit控件用来创建文本编辑框。用来显示和编辑富文本内容。

2.QTextEdit案例

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


class QTextEditDemo(QWidget):
    def __init__(self):
        super(QTextEditDemo, self).__init__()
        self.init_ui()

    def init_ui(self):
        v_layout = QVBoxLayout(self)

        self.text_edit = QTextEdit()  # 文本框控件
        set_text = QPushButton('设置文本')
        set_text.clicked.connect(self.set_edit_text)
        get_text = QPushButton('获取文本')
        get_text.clicked.connect(self.get_edit_text)

        set_html = QPushButton('设置HTML')
        set_html.clicked.connect(self.set_html_text)
        get_html = QPushButton('获取HTML')
        get_html.clicked.connect(self.get_html_text)

        v_layout.addWidget(self.text_edit)
        v_layout.addWidget(set_text)
        v_layout.addWidget(get_text)
        v_layout.addWidget(set_html)
        v_layout.addWidget(get_html)

    def set_edit_text(self):
        self.text_edit.setPlainText('hello word')  # 设置TextEdit纯文本内容

    def set_html_text(self):
        self.text_edit.setHtml('<a href="#">hello word</a>')  # 设置TextEdit HTML内容

    def get_edit_text(self):
        print(self.text_edit.toPlainText())  # 获取TextEdit纯文本内容

    def get_html_text(self):
        print(self.text_edit.toHtml())  # 获取TextEdit HTML内容
       
    def text_changed(self):
        print('文本发生变化')

    def selection_changed(self):
        print('选中文本行')

    def cursor_position_changed(self):
        print('光标移动')


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = QTextEditDemo()
    w.show()
    sys.exit(app.exec())

3.运行结果

4.常用方法

5.常用信号