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pyqt QTextEdit 详细用法

作者:互联网

    Qt显示文本的控件很多,QLabel, QLineEdit, QPlainText等,本篇介绍QTexEdit的用法,主要API如下:

setPlainText:显示文本

toPlainText:获取文本

setHtml:设置html文本

toHtml:获取html代码

     示例代码如下:

from PyQt5.QtWidgets import *
import sys

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

    def initUI(self):
        self.setWindowTitle('QTextEdit控件演示')

        self.resize(300,320)

        self.textEdit = QTextEdit()
        self.buttonText = QPushButton('显示文本')
        self.buttonHTML = QPushButton('显示HTML')

        self.buttonToText = QPushButton('获取文本')
        self.buttonToHTML = QPushButton('获取HTML')

        layout = QVBoxLayout()
        layout.addWidget(self.textEdit)
        layout.addWidget(self.buttonText)
        layout.addWidget(self.buttonToText)
        layout.addWidget(self.buttonHTML)
        layout.addWidget(self.buttonToHTML)

        self.setLayout(layout)

        self.buttonText.clicked.connect(self.onClick_ButtonText)
        self.buttonHTML.clicked.connect(self.onClick_ButtonHTML)

        self.buttonToText.clicked.connect(self.onClick_ButtonToText)
        self.buttonToHTML.clicked.connect(self.onClick_ButtonToHTML)

    def onClick_ButtonText(self):
        self.textEdit.setPlainText('Hello World,世界你好吗?')

    def onClick_ButtonToText(self):
        print(self.textEdit.toPlainText())

    def onClick_ButtonHTML(self):
        self.textEdit.setHtml('<font color="blue" size="5">Hello World</font>')
    def onClick_ButtonToHTML(self):
        print(self.textEdit.toHtml())

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

       运行结果:

       QTextEdit可以多行显示,例如:

标签:__,layout,QTextEdit,self,pyqt,用法,textEdit,onClick,def
来源: https://blog.51cto.com/u_12570763/2855318